Class: Date
- Inherits:
-
Object
- Object
- Date
- Includes:
- Comparable
- Defined in:
- lib/date.rb,
ext/date/date_core.c
Direct Known Subclasses
Defined Under Namespace
Classes: Infinity
Constant Summary collapse
- MONTHNAMES =
An array of strings of full month names in English. The first element is nil.
mk_ary_of_str(13, monthnames)
- ABBR_MONTHNAMES =
An array of strings of abbreviated month names in English. The first element is nil.
mk_ary_of_str(13, abbr_monthnames)
- DAYNAMES =
An array of strings of the full names of days of the week in English. The first is “Sunday”.
mk_ary_of_str(7, daynames)
- ABBR_DAYNAMES =
An array of strings of abbreviated day names in English. The first is “Sun”.
mk_ary_of_str(7, abbr_daynames)
- ITALY =
The Julian day number of the day of calendar reform for Italy and some catholic countries.
INT2FIX(ITALY)
- ENGLAND =
The Julian day number of the day of calendar reform for England and her colonies.
INT2FIX(ENGLAND)
- JULIAN =
The Julian day number of the day of calendar reform for the proleptic Julian calendar.
DBL2NUM(JULIAN)
- GREGORIAN =
The Julian day number of the day of calendar reform for the proleptic Gregorian calendar.
DBL2NUM(GREGORIAN)
Class Method Summary collapse
-
._httpdate(string) ⇒ Hash
Returns a hash of parsed elements.
-
._iso8601(string) ⇒ Hash
Returns a hash of parsed elements.
-
._jisx0301(string) ⇒ Hash
Returns a hash of parsed elements.
-
._load(s) ⇒ Object
:nodoc:.
-
._parse(string[, comp = true]) ⇒ Hash
Parses the given representation of date and time, and returns a hash of parsed elements.
-
._rfc2822(str) ⇒ Object
Returns a hash of parsed elements.
-
._rfc3339(string) ⇒ Hash
Returns a hash of parsed elements.
-
._rfc822(str) ⇒ Object
Returns a hash of parsed elements.
-
._strptime(string[, format = '%F']) ⇒ Hash
Parses the given representation of date and time with the given template, and returns a hash of parsed elements.
-
._xmlschema(string) ⇒ Hash
Returns a hash of parsed elements.
-
.civil(*args) ⇒ Object
Creates a date object denoting the given calendar date.
-
.commercial([cwyear = -4712[, cweek=1[, cwday=1[, start=Date::ITALY]]]]) ⇒ Object
Creates a date object denoting the given week date.
-
.gregorian_leap?(y) ⇒ Object
Returns true if the given year is a leap year of the proleptic Gregorian calendar.
-
.httpdate(string = 'Mon, 01 Jan -4712 00:00:00 GMT'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some RFC 2616 format.
-
.iso8601(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical ISO 8601 formats.
-
.jd([jd = 0[, start=Date::ITALY]]) ⇒ Object
Creates a date object denoting the given chronological Julian day number.
-
.jisx0301(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical JIS X 0301 formats.
-
.julian_leap?(year) ⇒ Boolean
Returns true if the given year is a leap year of the proleptic Julian calendar.
-
.leap?(y) ⇒ Object
Returns true if the given year is a leap year of the proleptic Gregorian calendar.
-
.new(*args) ⇒ Object
Creates a date object denoting the given calendar date.
-
.ordinal([year = -4712[, yday=1[, start=Date::ITALY]]]) ⇒ Object
Creates a date object denoting the given ordinal date.
-
.parse(string = '-4712-01-01'[, comp=true[, start=Date::ITALY]]) ⇒ Object
Parses the given representation of date and time, and creates a date object.
-
.rfc2822(*args) ⇒ Object
Creates a new Date object by parsing from a string according to some typical RFC 2822 formats.
-
.rfc3339(string = '-4712-01-01T00:00:00+00:00'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical RFC 3339 formats.
-
.rfc822(*args) ⇒ Object
Creates a new Date object by parsing from a string according to some typical RFC 2822 formats.
-
.strptime([string = '-4712-01-01'[, format='%F'[, start=Date::ITALY]]]) ⇒ Object
Parses the given representation of date and time with the given template, and creates a date object.
-
.today([start = Date::ITALY]) ⇒ Object
Creates a date object denoting the present day.
-
.valid_civil?(*args) ⇒ Object
Returns true if the given calendar date is valid, and false if not.
-
.valid_commercial?(cwyear, cweek, cwday[, start = Date::ITALY]) ⇒ Boolean
Returns true if the given week date is valid, and false if not.
-
.valid_date?(*args) ⇒ Object
Returns true if the given calendar date is valid, and false if not.
-
.valid_jd?(jd[, start = Date::ITALY]) ⇒ Boolean
Just returns true.
-
.valid_ordinal?(year, yday[, start = Date::ITALY]) ⇒ Boolean
Returns true if the given ordinal date is valid, and false if not.
-
.xmlschema(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical XML Schema formats.
Instance Method Summary collapse
-
#+(other) ⇒ Object
Returns a date object pointing
other
days after self. -
#-(other) ⇒ Object
Returns the difference between the two dates if the other is a date object.
-
#<<(n) ⇒ Object
Returns a date object pointing
n
months before self. -
#<=>(other) ⇒ -1, ...
Compares the two dates and returns -1, zero, 1 or nil.
-
#===(other) ⇒ Boolean
Returns true if they are the same day.
-
#>>(n) ⇒ Object
Returns a date object pointing
n
months after self. -
#ajd ⇒ Object
Returns the astronomical Julian day number.
-
#amjd ⇒ Object
Returns the astronomical modified Julian day number.
-
#asctime ⇒ Object
Returns a string in asctime(3) format (but without “n0” at the end).
-
#ctime ⇒ Object
Returns a string in asctime(3) format (but without “n0” at the end).
-
#cwday ⇒ Fixnum
Returns the day of calendar week (1-7, Monday is 1).
-
#cweek ⇒ Fixnum
Returns the calendar week number (1-53).
-
#cwyear ⇒ Integer
Returns the calendar week based year.
-
#day ⇒ Object
Returns the day of the month (1-31).
-
#day_fraction ⇒ Object
Returns the fractional part of the day.
-
#downto(min) ⇒ Object
This method is equivalent to step(min, -1){|date| …}.
-
#england ⇒ Object
This method is equivalent to new_start(Date::ENGLAND).
-
#eql?(other) ⇒ Boolean
:nodoc:.
-
#friday? ⇒ Boolean
Returns true if the date is Friday.
-
#gregorian ⇒ Object
This method is equivalent to new_start(Date::GREGORIAN).
-
#gregorian? ⇒ Boolean
Returns true if the date is on or after the day of calendar reform.
-
#hash ⇒ Object
:nodoc:.
-
#httpdate ⇒ String
This method is equivalent to strftime(‘%a, %d %b %Y %T GMT’).
-
#initialize_copy(date) ⇒ Object
:nodoc:.
-
#inspect ⇒ String
Returns the value as a string for inspection.
-
#iso8601 ⇒ Object
This method is equivalent to strftime(‘%F’).
-
#italy ⇒ Object
This method is equivalent to new_start(Date::ITALY).
-
#jd ⇒ Integer
Returns the Julian day number.
-
#jisx0301 ⇒ String
Returns a string in a JIS X 0301 format.
-
#julian ⇒ Object
This method is equivalent to new_start(Date::JULIAN).
-
#julian? ⇒ Boolean
Returns true if the date is before the day of calendar reform.
-
#ld ⇒ Integer
Returns the Lilian day number.
-
#leap? ⇒ Boolean
Returns true if the year is a leap year.
-
#marshal_dump ⇒ Object
:nodoc:.
-
#marshal_load(a) ⇒ Object
:nodoc:.
-
#mday ⇒ Object
Returns the day of the month (1-31).
-
#mjd ⇒ Integer
Returns the modified Julian day number.
-
#mon ⇒ Object
Returns the month (1-12).
-
#monday? ⇒ Boolean
Returns true if the date is Monday.
-
#month ⇒ Object
Returns the month (1-12).
-
#new_start([start = Date::ITALY]) ⇒ Object
Duplicates self and resets its day of calendar reform.
-
#next ⇒ Object
Returns a date object denoting the following day.
-
#next_day([n = 1]) ⇒ Object
This method is equivalent to d + n.
-
#next_month([n = 1]) ⇒ Object
This method is equivalent to d >> n.
-
#next_year([n = 1]) ⇒ Object
This method is equivalent to d >> (n * 12).
-
#prev_day([n = 1]) ⇒ Object
This method is equivalent to d - n.
-
#prev_month([n = 1]) ⇒ Object
This method is equivalent to d << n.
-
#prev_year([n = 1]) ⇒ Object
This method is equivalent to d << (n * 12).
-
#rfc2822 ⇒ Object
This method is equivalent to strftime(‘%a, %-d %b %Y %T %z’).
-
#rfc3339 ⇒ String
This method is equivalent to strftime(‘%FT%T%:z’).
-
#rfc822 ⇒ Object
This method is equivalent to strftime(‘%a, %-d %b %Y %T %z’).
-
#saturday? ⇒ Boolean
Returns true if the date is Saturday.
-
#start ⇒ Float
Returns the Julian day number denoting the day of calendar reform.
-
#step(*args) ⇒ Object
Iterates evaluation of the given block, which takes a date object.
-
#strftime([format = '%F']) ⇒ String
Formats date according to the directives in the given format string.
-
#succ ⇒ Object
Returns a date object denoting the following day.
-
#sunday? ⇒ Boolean
Returns true if the date is Sunday.
-
#thursday? ⇒ Boolean
Returns true if the date is Thursday.
-
#to_date ⇒ self
Returns self.
-
#to_datetime ⇒ Object
Returns a DateTime object which denotes self.
-
#to_s ⇒ String
Returns a string in an ISO 8601 format.
-
#to_time ⇒ Time
Returns a Time object which denotes self.
-
#tuesday? ⇒ Boolean
Returns true if the date is Tuesday.
-
#upto(max) ⇒ Object
This method is equivalent to step(max, 1){|date| …}.
-
#wday ⇒ Fixnum
Returns the day of week (0-6, Sunday is zero).
-
#wednesday? ⇒ Boolean
Returns true if the date is Wednesday.
-
#xmlschema ⇒ Object
This method is equivalent to strftime(‘%F’).
-
#yday ⇒ Fixnum
Returns the day of the year (1-366).
-
#year ⇒ Integer
Returns the year.
Class Method Details
._httpdate(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4564
static VALUE
date_s__httpdate(VALUE klass, VALUE str)
{
return date__httpdate(str);
}
|
._iso8601(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4395
static VALUE
date_s__iso8601(VALUE klass, VALUE str)
{
return date__iso8601(str);
}
|
._jisx0301(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4606
static VALUE
date_s__jisx0301(VALUE klass, VALUE str)
{
return date__jisx0301(str);
}
|
._load(s) ⇒ Object
:nodoc:
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# File 'ext/date/date_core.c', line 7189
static VALUE
date_s__load(VALUE klass, VALUE s)
{
VALUE a, obj;
a = rb_marshal_load(s);
obj = d_lite_s_alloc(klass);
return d_lite_marshal_load(obj, a);
}
|
._parse(string[, comp = true]) ⇒ Hash
Parses the given representation of date and time, and returns a hash of parsed elements. This method does not function as a validator.
If the optional second argument is true and the detected year is in the range “00” to “99”, considers the year a 2-digit form and makes it full.
Date._parse('2001-02-03') #=> {:year=>2001, :mon=>2, :mday=>3}
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# File 'ext/date/date_core.c', line 4335
static VALUE
date_s__parse(int argc, VALUE *argv, VALUE klass)
{
return date_s__parse_internal(argc, argv, klass);
}
|
._rfc2822(string) ⇒ Hash ._rfc822(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4521
static VALUE
date_s__rfc2822(VALUE klass, VALUE str)
{
return date__rfc2822(str);
}
|
._rfc3339(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4438
static VALUE
date_s__rfc3339(VALUE klass, VALUE str)
{
return date__rfc3339(str);
}
|
._rfc2822(string) ⇒ Hash ._rfc822(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4521
static VALUE
date_s__rfc2822(VALUE klass, VALUE str)
{
return date__rfc2822(str);
}
|
._strptime(string[, format = '%F']) ⇒ Hash
Parses the given representation of date and time with the given template, and returns a hash of parsed elements. _strptime does not support specification of flags and width unlike strftime.
Date._strptime('2001-02-03', '%Y-%m-%d')
#=> :mon=>2, :mday=>3
See also strptime(3) and #strftime.
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# File 'ext/date/date_core.c', line 4241
static VALUE
date_s__strptime(int argc, VALUE *argv, VALUE klass)
{
return date_s__strptime_internal(argc, argv, klass, "%F");
}
|
._xmlschema(string) ⇒ Hash
Returns a hash of parsed elements.
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# File 'ext/date/date_core.c', line 4479
static VALUE
date_s__xmlschema(VALUE klass, VALUE str)
{
return date__xmlschema(str);
}
|
.civil([year = -4712[, month=1[, mday=1[, start=Date::ITALY]]]]) ⇒ Object .new([year = -4712[, month=1[, mday=1[, start=Date::ITALY]]]]) ⇒ Object
Creates a date object denoting the given calendar date.
In this class, BCE years are counted astronomically. Thus, the year before the year 1 is the year zero, and the year preceding the year zero is the year -1. The month and the day of month should be a negative or a positive number (as a relative month/day from the end of year/month when negative). They should not be zero.
The last argument should be a Julian day number which denotes the day of calendar reform. Date::ITALY (2299161=1582-10-15), Date::ENGLAND (2361222=1752-09-14), Date::GREGORIAN (the proleptic Gregorian calendar) and Date::JULIAN (the proleptic Julian calendar) can be specified as a day of calendar reform.
Date.new(2001) #=> #<Date: 2001-01-01 ...>
Date.new(2001,2,3) #=> #<Date: 2001-02-03 ...>
Date.new(2001,2,-1) #=> #<Date: 2001-02-28 ...>
See also ::jd.
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# File 'ext/date/date_core.c', line 3385
static VALUE
date_s_civil(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vm, vd, vsg, y, fr, fr2, ret;
int m, d;
double sg;
rb_scan_args(argc, argv, "04", &vy, &vm, &vd, &vsg);
y = INT2FIX(-4712);
m = 1;
d = 1;
fr2 = INT2FIX(0);
sg = DEFAULT_SG;
switch (argc) {
case 4:
val2sg(vsg, sg);
case 3:
num2int_with_frac(d, positive_inf);
case 2:
m = NUM2INT(vm);
case 1:
y = vy;
}
if (guess_style(y, sg) < 0) {
VALUE nth;
int ry, rm, rd;
if (!valid_gregorian_p(y, m, d,
&nth, &ry,
&rm, &rd))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, 0,
sg,
ry, rm, rd,
HAVE_CIVIL);
}
else {
VALUE nth;
int ry, rm, rd, rjd, ns;
if (!valid_civil_p(y, m, d, sg,
&nth, &ry,
&rm, &rd, &rjd,
&ns))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, rjd,
sg,
ry, rm, rd,
HAVE_JD | HAVE_CIVIL);
}
add_frac();
return ret;
}
|
.commercial([cwyear = -4712[, cweek=1[, cwday=1[, start=Date::ITALY]]]]) ⇒ Object
Creates a date object denoting the given week date.
The week and the day of week should be a negative or a positive number (as a relative week/day from the end of year/week when negative). They should not be zero.
Date.commercial(2001) #=> #<Date: 2001-01-01 ...>
Date.commercial(2002) #=> #<Date: 2001-12-31 ...>
Date.commercial(2001,5,6) #=> #<Date: 2001-02-03 ...>
See also ::jd and ::new.
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# File 'ext/date/date_core.c', line 3462
static VALUE
date_s_commercial(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vw, vd, vsg, y, fr, fr2, ret;
int w, d;
double sg;
rb_scan_args(argc, argv, "04", &vy, &vw, &vd, &vsg);
y = INT2FIX(-4712);
w = 1;
d = 1;
fr2 = INT2FIX(0);
sg = DEFAULT_SG;
switch (argc) {
case 4:
val2sg(vsg, sg);
case 3:
num2int_with_frac(d, positive_inf);
case 2:
w = NUM2INT(vw);
case 1:
y = vy;
}
{
VALUE nth;
int ry, rw, rd, rjd, ns;
if (!valid_commercial_p(y, w, d, sg,
&nth, &ry,
&rw, &rd, &rjd,
&ns))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, rjd,
sg,
0, 0, 0,
HAVE_JD);
}
add_frac();
return ret;
}
|
.gregorian_leap?(year) ⇒ Boolean .leap?(year) ⇒ Boolean
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# File 'ext/date/date_core.c', line 2923
static VALUE
date_s_gregorian_leap_p(VALUE klass, VALUE y)
{
VALUE nth;
int ry;
decode_year(y, -1, &nth, &ry);
return f_boolcast(c_gregorian_leap_p(ry));
}
|
.httpdate(string = 'Mon, 01 Jan -4712 00:00:00 GMT'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some RFC 2616 format.
Date.httpdate('Sat, 03 Feb 2001 00:00:00 GMT')
#=> #<Date: 2001-02-03 …>
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# File 'ext/date/date_core.c', line 4580
static VALUE
date_s_httpdate(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__httpdate(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.iso8601(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
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# File 'ext/date/date_core.c', line 4412
static VALUE
date_s_iso8601(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__iso8601(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.jd([jd = 0[, start=Date::ITALY]]) ⇒ Object
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# File 'ext/date/date_core.c', line 3267
static VALUE
date_s_jd(int argc, VALUE *argv, VALUE klass)
{
VALUE vjd, vsg, jd, fr, fr2, ret;
double sg;
rb_scan_args(argc, argv, "02", &vjd, &vsg);
jd = INT2FIX(0);
fr2 = INT2FIX(0);
sg = DEFAULT_SG;
switch (argc) {
case 2:
val2sg(vsg, sg);
case 1:
num2num_with_frac(jd, positive_inf);
}
{
VALUE nth;
int rjd;
decode_jd(jd, &nth, &rjd);
ret = d_simple_new_internal(klass,
nth, rjd,
sg,
0, 0, 0,
HAVE_JD);
}
add_frac();
return ret;
}
|
.jisx0301(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical JIS X 0301 formats.
Date.jisx0301('H13.02.03') #=> #<Date: 2001-02-03 ...>
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# File 'ext/date/date_core.c', line 4621
static VALUE
date_s_jisx0301(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__jisx0301(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.julian_leap?(year) ⇒ Boolean
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# File 'ext/date/date_core.c', line 2902
static VALUE
date_s_julian_leap_p(VALUE klass, VALUE y)
{
VALUE nth;
int ry;
decode_year(y, +1, &nth, &ry);
return f_boolcast(c_julian_leap_p(ry));
}
|
.gregorian_leap?(year) ⇒ Boolean .leap?(year) ⇒ Boolean
Returns true if the given year is a leap year of the proleptic Gregorian calendar.
Date.gregorian_leap?(1900) #=> false
Date.gregorian_leap?(2000) #=> true
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# File 'ext/date/date_core.c', line 2923
static VALUE
date_s_gregorian_leap_p(VALUE klass, VALUE y)
{
VALUE nth;
int ry;
decode_year(y, -1, &nth, &ry);
return f_boolcast(c_gregorian_leap_p(ry));
}
|
.civil([year = -4712[, month=1[, mday=1[, start=Date::ITALY]]]]) ⇒ Object .new([year = -4712[, month=1[, mday=1[, start=Date::ITALY]]]]) ⇒ Object
Creates a date object denoting the given calendar date.
In this class, BCE years are counted astronomically. Thus, the year before the year 1 is the year zero, and the year preceding the year zero is the year -1. The month and the day of month should be a negative or a positive number (as a relative month/day from the end of year/month when negative). They should not be zero.
The last argument should be a Julian day number which denotes the day of calendar reform. Date::ITALY (2299161=1582-10-15), Date::ENGLAND (2361222=1752-09-14), Date::GREGORIAN (the proleptic Gregorian calendar) and Date::JULIAN (the proleptic Julian calendar) can be specified as a day of calendar reform.
Date.new(2001) #=> #<Date: 2001-01-01 ...>
Date.new(2001,2,3) #=> #<Date: 2001-02-03 ...>
Date.new(2001,2,-1) #=> #<Date: 2001-02-28 ...>
See also ::jd.
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# File 'ext/date/date_core.c', line 3385
static VALUE
date_s_civil(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vm, vd, vsg, y, fr, fr2, ret;
int m, d;
double sg;
rb_scan_args(argc, argv, "04", &vy, &vm, &vd, &vsg);
y = INT2FIX(-4712);
m = 1;
d = 1;
fr2 = INT2FIX(0);
sg = DEFAULT_SG;
switch (argc) {
case 4:
val2sg(vsg, sg);
case 3:
num2int_with_frac(d, positive_inf);
case 2:
m = NUM2INT(vm);
case 1:
y = vy;
}
if (guess_style(y, sg) < 0) {
VALUE nth;
int ry, rm, rd;
if (!valid_gregorian_p(y, m, d,
&nth, &ry,
&rm, &rd))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, 0,
sg,
ry, rm, rd,
HAVE_CIVIL);
}
else {
VALUE nth;
int ry, rm, rd, rjd, ns;
if (!valid_civil_p(y, m, d, sg,
&nth, &ry,
&rm, &rd, &rjd,
&ns))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, rjd,
sg,
ry, rm, rd,
HAVE_JD | HAVE_CIVIL);
}
add_frac();
return ret;
}
|
.ordinal([year = -4712[, yday=1[, start=Date::ITALY]]]) ⇒ Object
Creates a date object denoting the given ordinal date.
The day of year should be a negative or a positive number (as a relative day from the end of year when negative). It should not be zero.
Date.ordinal(2001) #=> #<Date: 2001-01-01 ...>
Date.ordinal(2001,34) #=> #<Date: 2001-02-03 ...>
Date.ordinal(2001,-1) #=> #<Date: 2001-12-31 ...>
See also ::jd and ::new.
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# File 'ext/date/date_core.c', line 3317
static VALUE
date_s_ordinal(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vd, vsg, y, fr, fr2, ret;
int d;
double sg;
rb_scan_args(argc, argv, "03", &vy, &vd, &vsg);
y = INT2FIX(-4712);
d = 1;
fr2 = INT2FIX(0);
sg = DEFAULT_SG;
switch (argc) {
case 3:
val2sg(vsg, sg);
case 2:
num2int_with_frac(d, positive_inf);
case 1:
y = vy;
}
{
VALUE nth;
int ry, rd, rjd, ns;
if (!valid_ordinal_p(y, d, sg,
&nth, &ry,
&rd, &rjd,
&ns))
rb_raise(rb_eArgError, "invalid date");
ret = d_simple_new_internal(klass,
nth, rjd,
sg,
0, 0, 0,
HAVE_JD);
}
add_frac();
return ret;
}
|
.parse(string = '-4712-01-01'[, comp=true[, start=Date::ITALY]]) ⇒ Object
Parses the given representation of date and time, and creates a date object. This method does not function as a validator.
If the optional second argument is true and the detected year is in the range “00” to “99”, considers the year a 2-digit form and makes it full.
Date.parse('2001-02-03') #=> #<Date: 2001-02-03 ...>
Date.parse('20010203') #=> #<Date: 2001-02-03 ...>
Date.parse('3rd Feb 2001') #=> #<Date: 2001-02-03 ...>
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# File 'ext/date/date_core.c', line 4356
static VALUE
date_s_parse(int argc, VALUE *argv, VALUE klass)
{
VALUE str, comp, sg;
rb_scan_args(argc, argv, "03", &str, &comp, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01");
case 1:
comp = Qtrue;
case 2:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE argv2[2], hash;
argv2[0] = str;
argv2[1] = comp;
hash = date_s__parse(2, argv2, klass);
return d_new_by_frags(klass, hash, sg);
}
}
|
.rfc2822(string = 'Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY]) ⇒ Object .rfc822(string = 'Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical RFC 2822 formats.
Date.rfc2822('Sat, 3 Feb 2001 00:00:00 +0000')
#=> #<Date: 2001-02-03 …>
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# File 'ext/date/date_core.c', line 4538
static VALUE
date_s_rfc2822(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__rfc2822(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.rfc3339(string = '-4712-01-01T00:00:00+00:00'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical RFC 3339 formats.
Date.rfc3339('2001-02-03T04:05:06+07:00') #=> #<Date: 2001-02-03 ...>
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# File 'ext/date/date_core.c', line 4453
static VALUE
date_s_rfc3339(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01T00:00:00+00:00");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__rfc3339(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.rfc2822(string = 'Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY]) ⇒ Object .rfc822(string = 'Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY]) ⇒ Object
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# File 'ext/date/date_core.c', line 4538
static VALUE
date_s_rfc2822(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__rfc2822(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
.strptime([string = '-4712-01-01'[, format='%F'[, start=Date::ITALY]]]) ⇒ Object
Parses the given representation of date and time with the given template, and creates a date object. strptime does not support specification of flags and width unlike strftime.
Date.strptime('2001-02-03', '%Y-%m-%d') #=> #<Date: 2001-02-03 ...>
Date.strptime('03-02-2001', '%d-%m-%Y') #=> #<Date: 2001-02-03 ...>
Date.strptime('2001-034', '%Y-%j') #=> #<Date: 2001-02-03 ...>
Date.strptime('2001-W05-6', '%G-W%V-%u') #=> #<Date: 2001-02-03 ...>
Date.strptime('2001 04 6', '%Y %U %w') #=> #<Date: 2001-02-03 ...>
Date.strptime('2001 05 6', '%Y %W %u') #=> #<Date: 2001-02-03 ...>
Date.strptime('sat3feb01', '%a%d%b%y') #=> #<Date: 2001-02-03 ...>
See also strptime(3) and #strftime.
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# File 'ext/date/date_core.c', line 4265
static VALUE
date_s_strptime(int argc, VALUE *argv, VALUE klass)
{
VALUE str, fmt, sg;
rb_scan_args(argc, argv, "03", &str, &fmt, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01");
case 1:
fmt = rb_str_new2("%F");
case 2:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE argv2[2], hash;
argv2[0] = str;
argv2[1] = fmt;
hash = date_s__strptime(2, argv2, klass);
return d_new_by_frags(klass, hash, sg);
}
}
|
.today([start = Date::ITALY]) ⇒ Object
Creates a date object denoting the present day.
Date.today #=> #<Date: 2011-06-11 ...>
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# File 'ext/date/date_core.c', line 3638
static VALUE
date_s_today(int argc, VALUE *argv, VALUE klass)
{
VALUE vsg, nth, ret;
double sg;
time_t t;
struct tm tm;
int y, ry, m, d;
rb_scan_args(argc, argv, "01", &vsg);
if (argc < 1)
sg = DEFAULT_SG;
else
val2sg(vsg, sg);
if (time(&t) == -1)
rb_sys_fail("time");
tzset();
if (!localtime_r(&t, &tm))
rb_sys_fail("localtime");
y = tm.tm_year + 1900;
m = tm.tm_mon + 1;
d = tm.tm_mday;
decode_year(INT2FIX(y), -1, &nth, &ry);
ret = d_simple_new_internal(klass,
nth, 0,
GREGORIAN,
ry, m, d,
HAVE_CIVIL);
{
get_d1(ret);
set_sg(dat, sg);
}
return ret;
}
|
.valid_civil?(year, month, mday[, start = Date::ITALY]) ⇒ Boolean .valid_date?(year, month, mday[, start = Date::ITALY]) ⇒ Boolean
Returns true if the given calendar date is valid, and false if not.
Date.valid_date?(2001,2,3) #=> true
Date.valid_date?(2001,2,29) #=> false
See also ::jd and ::civil.
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# File 'ext/date/date_core.c', line 2556
static VALUE
date_s_valid_civil_p(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vm, vd, vsg;
VALUE argv2[4];
rb_scan_args(argc, argv, "31", &vy, &vm, &vd, &vsg);
argv2[0] = vy;
argv2[1] = vm;
argv2[2] = vd;
if (argc < 4)
argv2[3] = INT2FIX(DEFAULT_SG);
else
argv2[3] = vsg;
if (NIL_P(valid_civil_sub(4, argv2, klass, 0)))
return Qfalse;
return Qtrue;
}
|
.valid_commercial?(cwyear, cweek, cwday[, start = Date::ITALY]) ⇒ Boolean
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# File 'ext/date/date_core.c', line 2719
static VALUE
date_s_valid_commercial_p(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vw, vd, vsg;
VALUE argv2[4];
rb_scan_args(argc, argv, "31", &vy, &vw, &vd, &vsg);
argv2[0] = vy;
argv2[1] = vw;
argv2[2] = vd;
if (argc < 4)
argv2[3] = INT2FIX(DEFAULT_SG);
else
argv2[3] = vsg;
if (NIL_P(valid_commercial_sub(4, argv2, klass, 0)))
return Qfalse;
return Qtrue;
}
|
.valid_civil?(year, month, mday[, start = Date::ITALY]) ⇒ Boolean .valid_date?(year, month, mday[, start = Date::ITALY]) ⇒ Boolean
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# File 'ext/date/date_core.c', line 2556
static VALUE
date_s_valid_civil_p(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vm, vd, vsg;
VALUE argv2[4];
rb_scan_args(argc, argv, "31", &vy, &vm, &vd, &vsg);
argv2[0] = vy;
argv2[1] = vm;
argv2[2] = vd;
if (argc < 4)
argv2[3] = INT2FIX(DEFAULT_SG);
else
argv2[3] = vsg;
if (NIL_P(valid_civil_sub(4, argv2, klass, 0)))
return Qfalse;
return Qtrue;
}
|
.valid_jd?(jd[, start = Date::ITALY]) ⇒ Boolean
Just returns true. It’s nonsense, but is for symmetry.
Date.valid_jd?(2451944) #=> true
See also ::jd.
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# File 'ext/date/date_core.c', line 2467
static VALUE
date_s_valid_jd_p(int argc, VALUE *argv, VALUE klass)
{
VALUE vjd, vsg;
VALUE argv2[2];
rb_scan_args(argc, argv, "11", &vjd, &vsg);
argv2[0] = vjd;
if (argc < 2)
argv2[1] = INT2FIX(DEFAULT_SG);
else
argv2[1] = vsg;
if (NIL_P(valid_jd_sub(2, argv2, klass, 0)))
return Qfalse;
return Qtrue;
}
|
.valid_ordinal?(year, yday[, start = Date::ITALY]) ⇒ Boolean
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# File 'ext/date/date_core.c', line 2637
static VALUE
date_s_valid_ordinal_p(int argc, VALUE *argv, VALUE klass)
{
VALUE vy, vd, vsg;
VALUE argv2[3];
rb_scan_args(argc, argv, "21", &vy, &vd, &vsg);
argv2[0] = vy;
argv2[1] = vd;
if (argc < 3)
argv2[2] = INT2FIX(DEFAULT_SG);
else
argv2[2] = vsg;
if (NIL_P(valid_ordinal_sub(3, argv2, klass, 0)))
return Qfalse;
return Qtrue;
}
|
.xmlschema(string = '-4712-01-01'[, start=Date::ITALY]) ⇒ Object
Creates a new Date object by parsing from a string according to some typical XML Schema formats.
Date.xmlschema('2001-02-03') #=> #<Date: 2001-02-03 ...>
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# File 'ext/date/date_core.c', line 4494
static VALUE
date_s_xmlschema(int argc, VALUE *argv, VALUE klass)
{
VALUE str, sg;
rb_scan_args(argc, argv, "02", &str, &sg);
switch (argc) {
case 0:
str = rb_str_new2("-4712-01-01");
case 1:
sg = INT2FIX(DEFAULT_SG);
}
{
VALUE hash = date_s__xmlschema(klass, str);
return d_new_by_frags(klass, hash, sg);
}
}
|
Instance Method Details
#+(other) ⇒ Object
Returns a date object pointing other
days after self. The other should be a numeric value. If the other is a fractional number, assumes its precision is at most nanosecond.
Date.new(2001,2,3) + 1 #=> #<Date: 2001-02-04 ...>
DateTime.new(2001,2,3) + Rational(1,2)
#=> #<DateTime: 2001-02-03T12:00:00+00:00 …>
DateTime.new(2001,2,3) + Rational(-1,2)
#=> #<DateTime: 2001-02-02T12:00:00+00:00 …>
DateTime.jd(0,12) + DateTime.new(2001,2,3).ajd
#=> #<DateTime: 2001-02-03T00:00:00+00:00 …>
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# File 'ext/date/date_core.c', line 5513
static VALUE
d_lite_plus(VALUE self, VALUE other)
{
get_d1(self);
switch (TYPE(other)) {
case T_FIXNUM:
{
VALUE nth;
long t;
int jd;
nth = m_nth(dat);
t = FIX2LONG(other);
if (DIV(t, CM_PERIOD)) {
nth = f_add(nth, INT2FIX(DIV(t, CM_PERIOD)));
t = MOD(t, CM_PERIOD);
}
if (!t)
jd = m_jd(dat);
else {
jd = m_jd(dat) + (int)t;
canonicalize_jd(nth, jd);
}
if (simple_dat_p(dat))
return d_simple_new_internal(rb_obj_class(self),
nth, jd,
dat->s.sg,
0, 0, 0,
(dat->s.flags | HAVE_JD) &
~HAVE_CIVIL);
else
return d_complex_new_internal(rb_obj_class(self),
nth, jd,
dat->c.df, dat->c.sf,
dat->c.of, dat->c.sg,
0, 0, 0,
#ifndef USE_PACK
dat->c.hour,
dat->c.min,
dat->c.sec,
#else
EX_HOUR(dat->c.pc),
EX_MIN(dat->c.pc),
EX_SEC(dat->c.pc),
#endif
(dat->c.flags | HAVE_JD) &
~HAVE_CIVIL);
}
break;
case T_BIGNUM:
{
VALUE nth;
int jd, s;
if (f_positive_p(other))
s = +1;
else {
s = -1;
other = f_negate(other);
}
nth = f_idiv(other, INT2FIX(CM_PERIOD));
jd = FIX2INT(f_mod(other, INT2FIX(CM_PERIOD)));
if (s < 0) {
nth = f_negate(nth);
jd = -jd;
}
if (!jd)
jd = m_jd(dat);
else {
jd = m_jd(dat) + jd;
canonicalize_jd(nth, jd);
}
if (f_zero_p(nth))
nth = m_nth(dat);
else
nth = f_add(m_nth(dat), nth);
if (simple_dat_p(dat))
return d_simple_new_internal(rb_obj_class(self),
nth, jd,
dat->s.sg,
0, 0, 0,
(dat->s.flags | HAVE_JD) &
~HAVE_CIVIL);
else
return d_complex_new_internal(rb_obj_class(self),
nth, jd,
dat->c.df, dat->c.sf,
dat->c.of, dat->c.sg,
0, 0, 0,
#ifndef USE_PACK
dat->c.hour,
dat->c.min,
dat->c.sec,
#else
EX_HOUR(dat->c.pc),
EX_MIN(dat->c.pc),
EX_SEC(dat->c.pc),
#endif
(dat->c.flags | HAVE_JD) &
~HAVE_CIVIL);
}
break;
case T_FLOAT:
{
double jd, o, tmp;
int s, df;
VALUE nth, sf;
o = RFLOAT_VALUE(other);
if (o > 0)
s = +1;
else {
s = -1;
o = -o;
}
o = modf(o, &tmp);
if (!floor(tmp / CM_PERIOD)) {
nth = INT2FIX(0);
jd = (int)tmp;
}
else {
double i, f;
f = modf(tmp / CM_PERIOD, &i);
nth = f_floor(DBL2NUM(i));
jd = (int)(f * CM_PERIOD);
}
o *= DAY_IN_SECONDS;
o = modf(o, &tmp);
df = (int)tmp;
o *= SECOND_IN_NANOSECONDS;
sf = INT2FIX((int)round(o));
if (s < 0) {
jd = -jd;
df = -df;
sf = f_negate(sf);
}
if (f_zero_p(sf))
sf = m_sf(dat);
else {
sf = f_add(m_sf(dat), sf);
if (f_lt_p(sf, INT2FIX(0))) {
df -= 1;
sf = f_add(sf, INT2FIX(SECOND_IN_NANOSECONDS));
}
else if (f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS))) {
df += 1;
sf = f_sub(sf, INT2FIX(SECOND_IN_NANOSECONDS));
}
}
if (!df)
df = m_df(dat);
else {
df = m_df(dat) + df;
if (df < 0) {
jd -= 1;
df += DAY_IN_SECONDS;
}
else if (df >= DAY_IN_SECONDS) {
jd += 1;
df -= DAY_IN_SECONDS;
}
}
if (!jd)
jd = m_jd(dat);
else {
jd = m_jd(dat) + jd;
canonicalize_jd(nth, jd);
}
if (f_zero_p(nth))
nth = m_nth(dat);
else
nth = f_add(m_nth(dat), nth);
if (!df && f_zero_p(sf) && !m_of(dat))
return d_simple_new_internal(rb_obj_class(self),
nth, (int)jd,
m_sg(dat),
0, 0, 0,
(dat->s.flags | HAVE_JD) &
~(HAVE_CIVIL | HAVE_TIME |
COMPLEX_DAT));
else
return d_complex_new_internal(rb_obj_class(self),
nth, (int)jd,
df, sf,
m_of(dat), m_sg(dat),
0, 0, 0,
0, 0, 0,
(dat->c.flags |
HAVE_JD | HAVE_DF) &
~(HAVE_CIVIL | HAVE_TIME));
}
break;
default:
expect_numeric(other);
other = f_to_r(other);
#ifdef CANONICALIZATION_FOR_MATHN
if (!k_rational_p(other))
return d_lite_plus(self, other);
#endif
/* fall through */
case T_RATIONAL:
{
VALUE nth, sf, t;
int jd, df, s;
if (wholenum_p(other))
return d_lite_plus(self, rb_rational_num(other));
if (f_positive_p(other))
s = +1;
else {
s = -1;
other = f_negate(other);
}
nth = f_idiv(other, INT2FIX(CM_PERIOD));
t = f_mod(other, INT2FIX(CM_PERIOD));
jd = FIX2INT(f_idiv(t, INT2FIX(1)));
t = f_mod(t, INT2FIX(1));
t = f_mul(t, INT2FIX(DAY_IN_SECONDS));
df = FIX2INT(f_idiv(t, INT2FIX(1)));
t = f_mod(t, INT2FIX(1));
sf = f_mul(t, INT2FIX(SECOND_IN_NANOSECONDS));
if (s < 0) {
nth = f_negate(nth);
jd = -jd;
df = -df;
sf = f_negate(sf);
}
if (f_zero_p(sf))
sf = m_sf(dat);
else {
sf = f_add(m_sf(dat), sf);
if (f_lt_p(sf, INT2FIX(0))) {
df -= 1;
sf = f_add(sf, INT2FIX(SECOND_IN_NANOSECONDS));
}
else if (f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS))) {
df += 1;
sf = f_sub(sf, INT2FIX(SECOND_IN_NANOSECONDS));
}
}
if (!df)
df = m_df(dat);
else {
df = m_df(dat) + df;
if (df < 0) {
jd -= 1;
df += DAY_IN_SECONDS;
}
else if (df >= DAY_IN_SECONDS) {
jd += 1;
df -= DAY_IN_SECONDS;
}
}
if (!jd)
jd = m_jd(dat);
else {
jd = m_jd(dat) + jd;
canonicalize_jd(nth, jd);
}
if (f_zero_p(nth))
nth = m_nth(dat);
else
nth = f_add(m_nth(dat), nth);
if (!df && f_zero_p(sf) && !m_of(dat))
return d_simple_new_internal(rb_obj_class(self),
nth, jd,
m_sg(dat),
0, 0, 0,
(dat->s.flags | HAVE_JD) &
~(HAVE_CIVIL | HAVE_TIME |
COMPLEX_DAT));
else
return d_complex_new_internal(rb_obj_class(self),
nth, jd,
df, sf,
m_of(dat), m_sg(dat),
0, 0, 0,
0, 0, 0,
(dat->c.flags |
HAVE_JD | HAVE_DF) &
~(HAVE_CIVIL | HAVE_TIME));
}
break;
}
}
|
#-(other) ⇒ Object
Returns the difference between the two dates if the other is a date object. If the other is a numeric value, returns a date object pointing other
days before self. If the other is a fractional number, assumes its precision is at most nanosecond.
Date.new(2001,2,3) - 1 #=> #<Date: 2001-02-02 ...>
DateTime.new(2001,2,3) - Rational(1,2)
#=> #<DateTime: 2001-02-02T12:00:00+00:00 …>
Date.new(2001,2,3) - Date.new(2001)
#=> (33/1)
DateTime.new(2001,2,3) - DateTime.new(2001,2,2,12)
#=> (1/2)
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# File 'ext/date/date_core.c', line 5897
static VALUE
d_lite_minus(VALUE self, VALUE other)
{
if (k_date_p(other))
return minus_dd(self, other);
switch (TYPE(other)) {
case T_FIXNUM:
return d_lite_plus(self, LONG2NUM(-FIX2LONG(other)));
case T_FLOAT:
return d_lite_plus(self, DBL2NUM(-RFLOAT_VALUE(other)));
default:
expect_numeric(other);
/* fall through */
case T_BIGNUM:
case T_RATIONAL:
return d_lite_plus(self, f_negate(other));
}
}
|
#<<(n) ⇒ Object
Returns a date object pointing n
months before self. The argument n
should be a numeric value.
Date.new(2001,2,3) << 1 #=> #<Date: 2001-01-03 ...>
Date.new(2001,2,3) << -2 #=> #<Date: 2001-04-03 ...>
When the same day does not exist for the corresponding month, the last day of the month is used instead:
Date.new(2001,3,28) << 1 #=> #<Date: 2001-02-28 ...>
Date.new(2001,3,31) << 1 #=> #<Date: 2001-02-28 ...>
This also results in the following, possibly unexpected, behavior:
Date.new(2001,3,31) << 2 #=> #<Date: 2001-01-31 ...>
Date.new(2001,3,31) << 1 << 1 #=> #<Date: 2001-01-28 ...>
Date.new(2001,3,31) << 1 << -1 #=> #<Date: 2001-03-28 ...>
6049 6050 6051 6052 6053 6054 |
# File 'ext/date/date_core.c', line 6049
static VALUE
d_lite_lshift(VALUE self, VALUE other)
{
expect_numeric(other);
return d_lite_rshift(self, f_negate(other));
}
|
#<=>(other) ⇒ -1, ...
Compares the two dates and returns -1, zero, 1 or nil. The other should be a date object or a numeric value as an astronomical Julian day number.
Date.new(2001,2,3) <=> Date.new(2001,2,4) #=> -1
Date.new(2001,2,3) <=> Date.new(2001,2,3) #=> 0
Date.new(2001,2,3) <=> Date.new(2001,2,2) #=> 1
Date.new(2001,2,3) <=> Object.new #=> nil
Date.new(2001,2,3) <=> Rational(4903887,2) #=> 0
See also Comparable.
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# File 'ext/date/date_core.c', line 6323
static VALUE
d_lite_cmp(VALUE self, VALUE other)
{
if (!k_date_p(other))
return cmp_gen(self, other);
{
get_d2(self, other);
if (!(simple_dat_p(adat) && simple_dat_p(bdat) &&
m_gregorian_p(adat) == m_gregorian_p(bdat)))
return cmp_dd(self, other);
{
VALUE a_nth, b_nth;
int a_jd, b_jd;
m_canonicalize_jd(self, adat);
m_canonicalize_jd(other, bdat);
a_nth = m_nth(adat);
b_nth = m_nth(bdat);
if (f_eqeq_p(a_nth, b_nth)) {
a_jd = m_jd(adat);
b_jd = m_jd(bdat);
if (a_jd == b_jd) {
return INT2FIX(0);
}
else if (a_jd < b_jd) {
return INT2FIX(-1);
}
else {
return INT2FIX(1);
}
}
else if (f_lt_p(a_nth, b_nth)) {
return INT2FIX(-1);
}
else {
return INT2FIX(1);
}
}
}
}
|
#===(other) ⇒ Boolean
Returns true if they are the same day.
Date.new(2001,2,3) === Date.new(2001,2,3)
#=> true
Date.new(2001,2,3) === Date.new(2001,2,4)
#=> false
DateTime.new(2001,2,3) === DateTime.new(2001,2,3,12)
#=> true
DateTime.new(2001,2,3) === DateTime.new(2001,2,3,0,0,0,'+24:00')
#=> true
DateTime.new(2001,2,3) === DateTime.new(2001,2,4,0,0,0,'+24:00')
#=> false
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# File 'ext/date/date_core.c', line 6396
static VALUE
d_lite_equal(VALUE self, VALUE other)
{
if (!k_date_p(other))
return equal_gen(self, other);
{
get_d2(self, other);
if (!(m_gregorian_p(adat) == m_gregorian_p(bdat)))
return equal_gen(self, other);
{
VALUE a_nth, b_nth;
int a_jd, b_jd;
m_canonicalize_jd(self, adat);
m_canonicalize_jd(other, bdat);
a_nth = m_nth(adat);
b_nth = m_nth(bdat);
a_jd = m_local_jd(adat);
b_jd = m_local_jd(bdat);
if (f_eqeq_p(a_nth, b_nth) &&
a_jd == b_jd)
return Qtrue;
return Qfalse;
}
}
}
|
#>>(n) ⇒ Object
Returns a date object pointing n
months after self. The argument n
should be a numeric value.
Date.new(2001,2,3) >> 1 #=> #<Date: 2001-03-03 ...>
Date.new(2001,2,3) >> -2 #=> #<Date: 2000-12-03 ...>
When the same day does not exist for the corresponding month, the last day of the month is used instead:
Date.new(2001,1,28) >> 1 #=> #<Date: 2001-02-28 ...>
Date.new(2001,1,31) >> 1 #=> #<Date: 2001-02-28 ...>
This also results in the following, possibly unexpected, behavior:
Date.new(2001,1,31) >> 2 #=> #<Date: 2001-03-31 ...>
Date.new(2001,1,31) >> 1 >> 1 #=> #<Date: 2001-03-28 ...>
Date.new(2001,1,31) >> 1 >> -1 #=> #<Date: 2001-01-28 ...>
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# File 'ext/date/date_core.c', line 5987
static VALUE
d_lite_rshift(VALUE self, VALUE other)
{
VALUE t, y, nth, rjd2;
int m, d, rjd;
double sg;
get_d1(self);
t = f_add3(f_mul(m_real_year(dat), INT2FIX(12)),
INT2FIX(m_mon(dat) - 1),
other);
if (FIXNUM_P(t)) {
long it = FIX2LONG(t);
y = LONG2NUM(DIV(it, 12));
it = MOD(it, 12);
m = (int)it + 1;
}
else {
y = f_idiv(t, INT2FIX(12));
t = f_mod(t, INT2FIX(12));
m = FIX2INT(t) + 1;
}
d = m_mday(dat);
sg = m_sg(dat);
while (1) {
int ry, rm, rd, ns;
if (valid_civil_p(y, m, d, sg,
&nth, &ry,
&rm, &rd, &rjd, &ns))
break;
if (--d < 1)
rb_raise(rb_eArgError, "invalid date");
}
encode_jd(nth, rjd, &rjd2);
return d_lite_plus(self, f_sub(rjd2, m_real_local_jd(dat)));
}
|
#ajd ⇒ Object
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# File 'ext/date/date_core.c', line 4818
static VALUE
d_lite_ajd(VALUE self)
{
get_d1(self);
return m_ajd(dat);
}
|
#amjd ⇒ Object
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# File 'ext/date/date_core.c', line 4835
static VALUE
d_lite_amjd(VALUE self)
{
get_d1(self);
return m_amjd(dat);
}
|
#asctime ⇒ String #ctime ⇒ String
Returns a string in asctime(3) format (but without “n0” at the end). This method is equivalent to strftime(‘%c’).
See also asctime(3) or ctime(3).
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# File 'ext/date/date_core.c', line 6939
static VALUE
d_lite_asctime(VALUE self)
{
return strftimev("%a %b %e %H:%M:%S %Y", self, set_tmx);
}
|
#asctime ⇒ String #ctime ⇒ String
Returns a string in asctime(3) format (but without “n0” at the end). This method is equivalent to strftime(‘%c’).
See also asctime(3) or ctime(3).
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# File 'ext/date/date_core.c', line 6939
static VALUE
d_lite_asctime(VALUE self)
{
return strftimev("%a %b %e %H:%M:%S %Y", self, set_tmx);
}
|
#cwday ⇒ Fixnum
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# File 'ext/date/date_core.c', line 5011
static VALUE
d_lite_cwday(VALUE self)
{
get_d1(self);
return INT2FIX(m_cwday(dat));
}
|
#cweek ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4996
static VALUE
d_lite_cweek(VALUE self)
{
get_d1(self);
return INT2FIX(m_cweek(dat));
}
|
#cwyear ⇒ Integer
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# File 'ext/date/date_core.c', line 4981
static VALUE
d_lite_cwyear(VALUE self)
{
get_d1(self);
return m_real_cwyear(dat);
}
|
#mday ⇒ Fixnum #day ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4948
static VALUE
d_lite_mday(VALUE self)
{
get_d1(self);
return INT2FIX(m_mday(dat));
}
|
#day_fraction ⇒ Object
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# File 'ext/date/date_core.c', line 4963
static VALUE
d_lite_day_fraction(VALUE self)
{
get_d1(self);
if (simple_dat_p(dat))
return INT2FIX(0);
return m_fr(dat);
}
|
#downto(min) ⇒ Object #downto(min) {|date| ... } ⇒ self
This method is equivalent to step(min, -1){|date| …}.
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# File 'ext/date/date_core.c', line 6223
static VALUE
d_lite_downto(VALUE self, VALUE min)
{
VALUE date;
RETURN_ENUMERATOR(self, 1, &min);
date = self;
while (FIX2INT(d_lite_cmp(date, min)) >= 0) {
rb_yield(date);
date = d_lite_plus(date, INT2FIX(-1));
}
return self;
}
|
#england ⇒ Object
This method is equivalent to new_start(Date::ENGLAND).
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# File 'ext/date/date_core.c', line 5421
static VALUE
d_lite_england(VALUE self)
{
return dup_obj_with_new_start(self, ENGLAND);
}
|
#eql?(other) ⇒ Boolean
:nodoc:
6427 6428 6429 6430 6431 6432 6433 |
# File 'ext/date/date_core.c', line 6427
static VALUE
d_lite_eql_p(VALUE self, VALUE other)
{
if (!k_date_p(other))
return Qfalse;
return f_zero_p(d_lite_cmp(self, other));
}
|
#friday? ⇒ Boolean
Returns true if the date is Friday.
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# File 'ext/date/date_core.c', line 5120
static VALUE
d_lite_friday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 5);
}
|
#gregorian ⇒ Object
This method is equivalent to new_start(Date::GREGORIAN).
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# File 'ext/date/date_core.c', line 5445
static VALUE
d_lite_gregorian(VALUE self)
{
return dup_obj_with_new_start(self, GREGORIAN);
}
|
#gregorian? ⇒ Boolean
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# File 'ext/date/date_core.c', line 5278
static VALUE
d_lite_gregorian_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_gregorian_p(dat));
}
|
#hash ⇒ Object
:nodoc:
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# File 'ext/date/date_core.c', line 6436
static VALUE
d_lite_hash(VALUE self)
{
st_index_t v, h[4];
get_d1(self);
h[0] = m_nth(dat);
h[1] = m_jd(dat);
h[2] = m_df(dat);
h[3] = m_sf(dat);
v = rb_memhash(h, sizeof(h));
return ST2FIX(v);
}
|
#httpdate ⇒ String
This method is equivalent to strftime(‘%a, %d %b %Y %T GMT’). See also RFC 2616.
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# File 'ext/date/date_core.c', line 6990
static VALUE
d_lite_httpdate(VALUE self)
{
volatile VALUE dup = dup_obj_with_new_offset(self, 0);
return strftimev("%a, %d %b %Y %T GMT", dup, set_tmx);
}
|
#initialize_copy(date) ⇒ Object
:nodoc:
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# File 'ext/date/date_core.c', line 4762
static VALUE
d_lite_initialize_copy(VALUE copy, VALUE date)
{
rb_check_frozen(copy);
rb_check_trusted(copy);
if (copy == date)
return copy;
{
get_d2(copy, date);
if (simple_dat_p(bdat)) {
adat->s = bdat->s;
adat->s.flags &= ~COMPLEX_DAT;
}
else {
if (!complex_dat_p(adat))
rb_raise(rb_eArgError,
"cannot load complex into simple");
adat->c = bdat->c;
adat->c.flags |= COMPLEX_DAT;
}
}
return copy;
}
|
#inspect ⇒ String
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# File 'ext/date/date_core.c', line 6550
static VALUE
d_lite_inspect(VALUE self)
{
get_d1(self);
return mk_inspect(dat, rb_obj_class(self), self);
}
|
#iso8601 ⇒ String #xmlschema ⇒ String
This method is equivalent to strftime(‘%F’).
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# File 'ext/date/date_core.c', line 6952
static VALUE
d_lite_iso8601(VALUE self)
{
return strftimev("%Y-%m-%d", self, set_tmx);
}
|
#italy ⇒ Object
This method is equivalent to new_start(Date::ITALY).
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# File 'ext/date/date_core.c', line 5409
static VALUE
d_lite_italy(VALUE self)
{
return dup_obj_with_new_start(self, ITALY);
}
|
#jd ⇒ Integer
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# File 'ext/date/date_core.c', line 4852
static VALUE
d_lite_jd(VALUE self)
{
get_d1(self);
return m_real_local_jd(dat);
}
|
#jisx0301 ⇒ String
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# File 'ext/date/date_core.c', line 7041
static VALUE
d_lite_jisx0301(VALUE self)
{
char fmtbuf[JISX0301_DATE_SIZE];
const char *fmt;
get_d1(self);
fmt = jisx0301_date_format(fmtbuf, sizeof(fmtbuf),
m_real_local_jd(dat),
m_real_year(dat));
return strftimev(fmt, self, set_tmx);
}
|
#julian ⇒ Object
This method is equivalent to new_start(Date::JULIAN).
5433 5434 5435 5436 5437 |
# File 'ext/date/date_core.c', line 5433
static VALUE
d_lite_julian(VALUE self)
{
return dup_obj_with_new_start(self, JULIAN);
}
|
#julian? ⇒ Boolean
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# File 'ext/date/date_core.c', line 5262
static VALUE
d_lite_julian_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_julian_p(dat));
}
|
#ld ⇒ Integer
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# File 'ext/date/date_core.c', line 4885
static VALUE
d_lite_ld(VALUE self)
{
get_d1(self);
return f_sub(m_real_local_jd(dat), INT2FIX(2299160));
}
|
#leap? ⇒ Boolean
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# File 'ext/date/date_core.c', line 5294
static VALUE
d_lite_leap_p(VALUE self)
{
int rjd, ns, ry, rm, rd;
get_d1(self);
if (m_gregorian_p(dat))
return f_boolcast(c_gregorian_leap_p(m_year(dat)));
c_civil_to_jd(m_year(dat), 3, 1, m_virtual_sg(dat),
&rjd, &ns);
c_jd_to_civil(rjd - 1, m_virtual_sg(dat), &ry, &rm, &rd);
return f_boolcast(rd == 29);
}
|
#marshal_dump ⇒ Object
:nodoc:
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# File 'ext/date/date_core.c', line 7077
static VALUE
d_lite_marshal_dump(VALUE self)
{
VALUE a;
get_d1(self);
a = rb_ary_new3(6,
m_nth(dat),
INT2FIX(m_jd(dat)),
INT2FIX(m_df(dat)),
m_sf(dat),
INT2FIX(m_of(dat)),
DBL2NUM(m_sg(dat)));
if (FL_TEST(self, FL_EXIVAR)) {
rb_copy_generic_ivar(a, self);
FL_SET(a, FL_EXIVAR);
}
return a;
}
|
#marshal_load(a) ⇒ Object
:nodoc:
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# File 'ext/date/date_core.c', line 7101
static VALUE
d_lite_marshal_load(VALUE self, VALUE a)
{
get_d1(self);
rb_check_frozen(self);
rb_check_trusted(self);
if (!RB_TYPE_P(a, T_ARRAY))
rb_raise(rb_eTypeError, "expected an array");
switch (RARRAY_LEN(a)) {
case 2: /* 1.6.x */
case 3: /* 1.8.x, 1.9.2 */
{
VALUE ajd, of, sg, nth, sf;
int jd, df, rof;
double rsg;
if (RARRAY_LEN(a) == 2) {
ajd = f_sub(RARRAY_AREF(a, 0), half_days_in_day);
of = INT2FIX(0);
sg = RARRAY_AREF(a, 1);
if (!k_numeric_p(sg))
sg = DBL2NUM(RTEST(sg) ? GREGORIAN : JULIAN);
}
else {
ajd = RARRAY_AREF(a, 0);
of = RARRAY_AREF(a, 1);
sg = RARRAY_AREF(a, 2);
}
old_to_new(ajd, of, sg,
&nth, &jd, &df, &sf, &rof, &rsg);
if (!df && f_zero_p(sf) && !rof) {
set_to_simple(self, &dat->s, nth, jd, rsg, 0, 0, 0, HAVE_JD);
} else {
if (!complex_dat_p(dat))
rb_raise(rb_eArgError,
"cannot load complex into simple");
set_to_complex(self, &dat->c, nth, jd, df, sf, rof, rsg,
0, 0, 0, 0, 0, 0,
HAVE_JD | HAVE_DF | COMPLEX_DAT);
}
}
break;
case 6:
{
VALUE nth, sf;
int jd, df, of;
double sg;
nth = RARRAY_AREF(a, 0);
jd = NUM2INT(RARRAY_AREF(a, 1));
df = NUM2INT(RARRAY_AREF(a, 2));
sf = RARRAY_AREF(a, 3);
of = NUM2INT(RARRAY_AREF(a, 4));
sg = NUM2DBL(RARRAY_AREF(a, 5));
if (!df && f_zero_p(sf) && !of) {
set_to_simple(self, &dat->s, nth, jd, sg, 0, 0, 0, HAVE_JD);
} else {
if (!complex_dat_p(dat))
rb_raise(rb_eArgError,
"cannot load complex into simple");
set_to_complex(self, &dat->c, nth, jd, df, sf, of, sg,
0, 0, 0, 0, 0, 0,
HAVE_JD | HAVE_DF | COMPLEX_DAT);
}
}
break;
default:
rb_raise(rb_eTypeError, "invalid size");
break;
}
if (FL_TEST(a, FL_EXIVAR)) {
rb_copy_generic_ivar(self, a);
FL_SET(self, FL_EXIVAR);
}
return self;
}
|
#mday ⇒ Fixnum #day ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4948
static VALUE
d_lite_mday(VALUE self)
{
get_d1(self);
return INT2FIX(m_mday(dat));
}
|
#mjd ⇒ Integer
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# File 'ext/date/date_core.c', line 4869
static VALUE
d_lite_mjd(VALUE self)
{
get_d1(self);
return f_sub(m_real_local_jd(dat), INT2FIX(2400001));
}
|
#mon ⇒ Fixnum #month ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4932
static VALUE
d_lite_mon(VALUE self)
{
get_d1(self);
return INT2FIX(m_mon(dat));
}
|
#monday? ⇒ Boolean
Returns true if the date is Monday.
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# File 'ext/date/date_core.c', line 5068
static VALUE
d_lite_monday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 1);
}
|
#mon ⇒ Fixnum #month ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4932
static VALUE
d_lite_mon(VALUE self)
{
get_d1(self);
return INT2FIX(m_mon(dat));
}
|
#new_start([start = Date::ITALY]) ⇒ Object
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# File 'ext/date/date_core.c', line 5388
static VALUE
d_lite_new_start(int argc, VALUE *argv, VALUE self)
{
VALUE vsg;
double sg;
rb_scan_args(argc, argv, "01", &vsg);
sg = DEFAULT_SG;
if (argc >= 1)
val2sg(vsg, sg);
return dup_obj_with_new_start(self, sg);
}
|
#succ ⇒ Object #next ⇒ Object
Returns a date object denoting the following day.
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# File 'ext/date/date_core.c', line 5958
static VALUE
d_lite_next(VALUE self)
{
return d_lite_next_day(0, (VALUE *)NULL, self);
}
|
#next_day([n = 1]) ⇒ Object
This method is equivalent to d + n.
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# File 'ext/date/date_core.c', line 5923
static VALUE
d_lite_next_day(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_plus(self, n);
}
|
#next_month([n = 1]) ⇒ Object
This method is equivalent to d >> n.
See Date#>> for examples.
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# File 'ext/date/date_core.c', line 6064
static VALUE
d_lite_next_month(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_rshift(self, n);
}
|
#next_year([n = 1]) ⇒ Object
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# File 'ext/date/date_core.c', line 6106
static VALUE
d_lite_next_year(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_rshift(self, f_mul(n, INT2FIX(12)));
}
|
#prev_day([n = 1]) ⇒ Object
This method is equivalent to d - n.
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# File 'ext/date/date_core.c', line 5940
static VALUE
d_lite_prev_day(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_minus(self, n);
}
|
#prev_month([n = 1]) ⇒ Object
This method is equivalent to d << n.
See Date#<< for examples.
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# File 'ext/date/date_core.c', line 6083
static VALUE
d_lite_prev_month(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_lshift(self, n);
}
|
#prev_year([n = 1]) ⇒ Object
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# File 'ext/date/date_core.c', line 6129
static VALUE
d_lite_prev_year(int argc, VALUE *argv, VALUE self)
{
VALUE n;
rb_scan_args(argc, argv, "01", &n);
if (argc < 1)
n = INT2FIX(1);
return d_lite_lshift(self, f_mul(n, INT2FIX(12)));
}
|
#rfc2822 ⇒ String #rfc822 ⇒ String
This method is equivalent to strftime(‘%a, %-d %b %Y %T %z’).
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# File 'ext/date/date_core.c', line 6977
static VALUE
d_lite_rfc2822(VALUE self)
{
return strftimev("%a, %-d %b %Y %T %z", self, set_tmx);
}
|
#rfc3339 ⇒ String
This method is equivalent to strftime(‘%FT%T%:z’).
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# File 'ext/date/date_core.c', line 6964
static VALUE
d_lite_rfc3339(VALUE self)
{
return strftimev("%Y-%m-%dT%H:%M:%S%:z", self, set_tmx);
}
|
#rfc2822 ⇒ String #rfc822 ⇒ String
This method is equivalent to strftime(‘%a, %-d %b %Y %T %z’).
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# File 'ext/date/date_core.c', line 6977
static VALUE
d_lite_rfc2822(VALUE self)
{
return strftimev("%a, %-d %b %Y %T %z", self, set_tmx);
}
|
#saturday? ⇒ Boolean
Returns true if the date is Saturday.
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# File 'ext/date/date_core.c', line 5133
static VALUE
d_lite_saturday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 6);
}
|
#start ⇒ Float
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# File 'ext/date/date_core.c', line 5318
static VALUE
d_lite_start(VALUE self)
{
get_d1(self);
return DBL2NUM(m_sg(dat));
}
|
#step(limit[, step = 1]) ⇒ Object #step(limit[, step = 1]) {|date| ... } ⇒ self
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# File 'ext/date/date_core.c', line 6153
static VALUE
d_lite_step(int argc, VALUE *argv, VALUE self)
{
VALUE limit, step, date;
rb_scan_args(argc, argv, "11", &limit, &step);
if (argc < 2)
step = INT2FIX(1);
#if 0
if (f_zero_p(step))
rb_raise(rb_eArgError, "step can't be 0");
#endif
RETURN_ENUMERATOR(self, argc, argv);
date = self;
switch (FIX2INT(f_cmp(step, INT2FIX(0)))) {
case -1:
while (FIX2INT(d_lite_cmp(date, limit)) >= 0) {
rb_yield(date);
date = d_lite_plus(date, step);
}
break;
case 0:
while (1)
rb_yield(date);
break;
case 1:
while (FIX2INT(d_lite_cmp(date, limit)) <= 0) {
rb_yield(date);
date = d_lite_plus(date, step);
}
break;
default:
abort();
}
return self;
}
|
#strftime([format = '%F']) ⇒ String
Formats date according to the directives in the given format string. The directives begin with a percent (%) character. Any text not listed as a directive will be passed through to the output string.
A directive consists of a percent (%) character, zero or more flags, an optional minimum field width, an optional modifier, and a conversion specifier as follows.
%<flags><width><modifier><conversion>
Flags:
- don't pad a numerical output.
_ use spaces for padding.
0 use zeros for padding.
^ upcase the result string.
# change case.
The minimum field width specifies the minimum width.
The modifiers are “E”, “O”, “:”, “::” and “:::”. “E” and “O” are ignored. No effect to result currently.
Format directives:
Date (Year, Month, Day):
%Y - Year with century (can be negative, 4 digits at least)
-0001, 0000, 1995, 2009, 14292, etc.
%C - year / 100 (round down. 20 in 2009)
%y - year % 100 (00..99)
%m - Month of the year, zero-padded (01..12)
%_m blank-padded ( 1..12)
%-m no-padded (1..12)
%B - The full month name (``January'')
%^B uppercased (``JANUARY'')
%b - The abbreviated month name (``Jan'')
%^b uppercased (``JAN'')
%h - Equivalent to %b
%d - Day of the month, zero-padded (01..31)
%-d no-padded (1..31)
%e - Day of the month, blank-padded ( 1..31)
%j - Day of the year (001..366)
Time (Hour, Minute, Second, Subsecond):
%H - Hour of the day, 24-hour clock, zero-padded (00..23)
%k - Hour of the day, 24-hour clock, blank-padded ( 0..23)
%I - Hour of the day, 12-hour clock, zero-padded (01..12)
%l - Hour of the day, 12-hour clock, blank-padded ( 1..12)
%P - Meridian indicator, lowercase (``am'' or ``pm'')
%p - Meridian indicator, uppercase (``AM'' or ``PM'')
%M - Minute of the hour (00..59)
%S - Second of the minute (00..59)
%L - Millisecond of the second (000..999)
%N - Fractional seconds digits, default is 9 digits (nanosecond)
%3N millisecond (3 digits) %15N femtosecond (15 digits)
%6N microsecond (6 digits) %18N attosecond (18 digits)
%9N nanosecond (9 digits) %21N zeptosecond (21 digits)
%12N picosecond (12 digits) %24N yoctosecond (24 digits)
Time zone:
%z - Time zone as hour and minute offset from UTC (e.g. +0900)
%:z - hour and minute offset from UTC with a colon (e.g. +09:00)
%::z - hour, minute and second offset from UTC (e.g. +09:00:00)
%:::z - hour, minute and second offset from UTC
(e.g. +09, +09:30, +09:30:30)
%Z - Equivalent to %:z (e.g. +09:00)
Weekday:
%A - The full weekday name (``Sunday'')
%^A uppercased (``SUNDAY'')
%a - The abbreviated name (``Sun'')
%^a uppercased (``SUN'')
%u - Day of the week (Monday is 1, 1..7)
%w - Day of the week (Sunday is 0, 0..6)
ISO 8601 week-based year and week number:
The week 1 of YYYY starts with a Monday and includes YYYY-01-04.
The days in the year before the first week are in the last week of
the previous year.
%G - The week-based year
%g - The last 2 digits of the week-based year (00..99)
%V - Week number of the week-based year (01..53)
Week number:
The week 1 of YYYY starts with a Sunday or Monday (according to %U
or %W). The days in the year before the first week are in week 0.
%U - Week number of the year. The week starts with Sunday. (00..53)
%W - Week number of the year. The week starts with Monday. (00..53)
Seconds since the Unix Epoch:
%s - Number of seconds since 1970-01-01 00:00:00 UTC.
%Q - Number of milliseconds since 1970-01-01 00:00:00 UTC.
Literal string:
%n - Newline character (\n)
%t - Tab character (\t)
%% - Literal ``%'' character
Combination:
%c - date and time (%a %b %e %T %Y)
%D - Date (%m/%d/%y)
%F - The ISO 8601 date format (%Y-%m-%d)
%v - VMS date (%e-%b-%Y)
%x - Same as %D
%X - Same as %T
%r - 12-hour time (%I:%M:%S %p)
%R - 24-hour time (%H:%M)
%T - 24-hour time (%H:%M:%S)
%+ - date(1) (%a %b %e %H:%M:%S %Z %Y)
This method is similar to the strftime() function defined in ISO C and POSIX. Several directives (%a, %A, %b, %B, %c, %p, %r, %x, %X, %E*, %O* and %Z) are locale dependent in the function. However, this method is locale independent. So, the result may differ even if the same format string is used in other systems such as C. It is good practice to avoid %x and %X because there are corresponding locale independent representations, %D and %T.
Examples:
d = DateTime.new(2007,11,19,8,37,48,"-06:00")
#=> #<DateTime: 2007-11-19T08:37:48-0600 …>
d.strftime("Printed on %m/%d/%Y") #=> "Printed on 11/19/2007"
d.strftime("at %I:%M%p") #=> "at 08:37AM"
Various ISO 8601 formats:
%Y%m%d => 20071119 Calendar date (basic)
%F => 2007-11-19 Calendar date (extended)
%Y-%m => 2007-11 Calendar date, reduced accuracy, specific month
%Y => 2007 Calendar date, reduced accuracy, specific year
%C => 20 Calendar date, reduced accuracy, specific century
%Y%j => 2007323 Ordinal date (basic)
%Y-%j => 2007-323 Ordinal date (extended)
%GW%V%u => 2007W471 Week date (basic)
%G-W%V-%u => 2007-W47-1 Week date (extended)
%GW%V => 2007W47 Week date, reduced accuracy, specific week (basic)
%G-W%V => 2007-W47 Week date, reduced accuracy, specific week (extended)
%H%M%S => 083748 Local time (basic)
%T => 08:37:48 Local time (extended)
%H%M => 0837 Local time, reduced accuracy, specific minute (basic)
%H:%M => 08:37 Local time, reduced accuracy, specific minute (extended)
%H => 08 Local time, reduced accuracy, specific hour
%H%M%S,%L => 083748,000 Local time with decimal fraction, comma as decimal sign (basic)
%T,%L => 08:37:48,000 Local time with decimal fraction, comma as decimal sign (extended)
%H%M%S.%L => 083748.000 Local time with decimal fraction, full stop as decimal sign (basic)
%T.%L => 08:37:48.000 Local time with decimal fraction, full stop as decimal sign (extended)
%H%M%S%z => 083748-0600 Local time and the difference from UTC (basic)
%T%:z => 08:37:48-06:00 Local time and the difference from UTC (extended)
%Y%m%dT%H%M%S%z => 20071119T083748-0600 Date and time of day for calendar date (basic)
%FT%T%:z => 2007-11-19T08:37:48-06:00 Date and time of day for calendar date (extended)
%Y%jT%H%M%S%z => 2007323T083748-0600 Date and time of day for ordinal date (basic)
%Y-%jT%T%:z => 2007-323T08:37:48-06:00 Date and time of day for ordinal date (extended)
%GW%V%uT%H%M%S%z => 2007W471T083748-0600 Date and time of day for week date (basic)
%G-W%V-%uT%T%:z => 2007-W47-1T08:37:48-06:00 Date and time of day for week date (extended)
%Y%m%dT%H%M => 20071119T0837 Calendar date and local time (basic)
%FT%R => 2007-11-19T08:37 Calendar date and local time (extended)
%Y%jT%H%MZ => 2007323T0837Z Ordinal date and UTC of day (basic)
%Y-%jT%RZ => 2007-323T08:37Z Ordinal date and UTC of day (extended)
%GW%V%uT%H%M%z => 2007W471T0837-0600 Week date and local time and difference from UTC (basic)
%G-W%V-%uT%R%:z => 2007-W47-1T08:37-06:00 Week date and local time and difference from UTC (extended)
See also strftime(3) and ::strptime.
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# File 'ext/date/date_core.c', line 6905
static VALUE
d_lite_strftime(int argc, VALUE *argv, VALUE self)
{
return date_strftime_internal(argc, argv, self,
"%Y-%m-%d", set_tmx);
}
|
#succ ⇒ Object #next ⇒ Object
Returns a date object denoting the following day.
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# File 'ext/date/date_core.c', line 5958
static VALUE
d_lite_next(VALUE self)
{
return d_lite_next_day(0, (VALUE *)NULL, self);
}
|
#sunday? ⇒ Boolean
Returns true if the date is Sunday.
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# File 'ext/date/date_core.c', line 5055
static VALUE
d_lite_sunday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 0);
}
|
#thursday? ⇒ Boolean
Returns true if the date is Thursday.
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# File 'ext/date/date_core.c', line 5107
static VALUE
d_lite_thursday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 4);
}
|
#to_date ⇒ self
Returns self.
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# File 'ext/date/date_core.c', line 8548
static VALUE
date_to_date(VALUE self)
{
return self;
}
|
#to_datetime ⇒ Object
Returns a DateTime object which denotes self.
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# File 'ext/date/date_core.c', line 8560
static VALUE
date_to_datetime(VALUE self)
{
get_d1a(self);
if (simple_dat_p(adat)) {
VALUE new = d_lite_s_alloc_simple(cDateTime);
{
get_d1b(new);
bdat->s = adat->s;
return new;
}
}
else {
VALUE new = d_lite_s_alloc_complex(cDateTime);
{
get_d1b(new);
bdat->c = adat->c;
bdat->c.df = 0;
RB_OBJ_WRITE(new, &bdat->c.sf, INT2FIX(0));
#ifndef USE_PACK
bdat->c.hour = 0;
bdat->c.min = 0;
bdat->c.sec = 0;
#else
bdat->c.pc = PACK5(EX_MON(adat->c.pc), EX_MDAY(adat->c.pc),
0, 0, 0);
bdat->c.flags |= HAVE_DF | HAVE_TIME;
#endif
return new;
}
}
}
|
#to_s ⇒ String
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# File 'ext/date/date_core.c', line 6464
static VALUE
d_lite_to_s(VALUE self)
{
return strftimev("%Y-%m-%d", self, set_tmx);
}
|
#to_time ⇒ Time
Returns a Time object which denotes self.
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# File 'ext/date/date_core.c', line 8531
static VALUE
date_to_time(VALUE self)
{
get_d1(self);
return f_local3(rb_cTime,
m_real_year(dat),
INT2FIX(m_mon(dat)),
INT2FIX(m_mday(dat)));
}
|
#tuesday? ⇒ Boolean
Returns true if the date is Tuesday.
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# File 'ext/date/date_core.c', line 5081
static VALUE
d_lite_tuesday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 2);
}
|
#upto(max) ⇒ Object #upto(max) {|date| ... } ⇒ self
This method is equivalent to step(max, 1){|date| …}.
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# File 'ext/date/date_core.c', line 6201
static VALUE
d_lite_upto(VALUE self, VALUE max)
{
VALUE date;
RETURN_ENUMERATOR(self, 1, &max);
date = self;
while (FIX2INT(d_lite_cmp(date, max)) <= 0) {
rb_yield(date);
date = d_lite_plus(date, INT2FIX(1));
}
return self;
}
|
#wday ⇒ Fixnum
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# File 'ext/date/date_core.c', line 5042
static VALUE
d_lite_wday(VALUE self)
{
get_d1(self);
return INT2FIX(m_wday(dat));
}
|
#wednesday? ⇒ Boolean
Returns true if the date is Wednesday.
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# File 'ext/date/date_core.c', line 5094
static VALUE
d_lite_wednesday_p(VALUE self)
{
get_d1(self);
return f_boolcast(m_wday(dat) == 3);
}
|
#iso8601 ⇒ String #xmlschema ⇒ String
This method is equivalent to strftime(‘%F’).
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# File 'ext/date/date_core.c', line 6952
static VALUE
d_lite_iso8601(VALUE self)
{
return strftimev("%Y-%m-%d", self, set_tmx);
}
|
#yday ⇒ Fixnum
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# File 'ext/date/date_core.c', line 4916
static VALUE
d_lite_yday(VALUE self)
{
get_d1(self);
return INT2FIX(m_yday(dat));
}
|