Module: ActiveObject::Numeric

Defined in:
lib/active_object/numeric.rb

Instance Method Summary collapse

Instance Method Details

#add(num) ⇒ Object 



55
56
57
 
# File 'lib/active_object/numeric.rb', line 55

def add(num)
  self + num
end

#bytes_in_bytes ⇒ Object Also known as: byte_in_bytes 



59
60
61
 
# File 'lib/active_object/numeric.rb', line 59

def bytes_in_bytes
  self
end

#centigrams_in_grams ⇒ Object Also known as: centigram_in_grams 



65
66
67
 
# File 'lib/active_object/numeric.rb', line 65

def centigrams_in_grams
  self * CENTI
end

#centimeters_in_meters ⇒ Object Also known as: centimeter_in_meters 



71
72
73
 
# File 'lib/active_object/numeric.rb', line 71

def centimeters_in_meters
  self * CENTI
end

#centuries_in_seconds ⇒ Object Also known as: century_in_seconds 



77
78
79
 
# File 'lib/active_object/numeric.rb', line 77

def centuries_in_seconds
  self * CENTURY
end

#clamp(minimum, maximum = nil) ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity



84
85
86
87
88
89
90
91
92
93
94
95
96
97
 
# File 'lib/active_object/numeric.rb', line 84

def clamp(minimum, maximum = nil)
  if maximum.nil? && minimum.is_a?(Range)
    min_min = minimum.min
    min_max = minimum.max

    return min_min if min_min > self

    min_max < self ? min_max : self
  else
    return minimum if minimum > self

    maximum < self ? maximum : self
  end
end

#days_in_seconds ⇒ Object Also known as: day_in_seconds

rubocop:enable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity



100
101
102
 
# File 'lib/active_object/numeric.rb', line 100

def days_in_seconds
  self * DAY
end

#decades_in_seconds ⇒ Object Also known as: decade_in_seconds 



106
107
108
 
# File 'lib/active_object/numeric.rb', line 106

def decades_in_seconds
  self * DECADE
end

#decagrams_in_grams ⇒ Object Also known as: decagram_in_grams 



112
113
114
 
# File 'lib/active_object/numeric.rb', line 112

def decagrams_in_grams
  self * DECA
end

#decameters_in_meters ⇒ Object Also known as: decameter_in_meters 



118
119
120
 
# File 'lib/active_object/numeric.rb', line 118

def decameters_in_meters
  self * DECA
end

#decigrams_in_grams ⇒ Object Also known as: decigram_in_grams 



124
125
126
 
# File 'lib/active_object/numeric.rb', line 124

def decigrams_in_grams
  self * DECI
end

#decimeters_in_meters ⇒ Object Also known as: decimeter_in_meters 



130
131
132
 
# File 'lib/active_object/numeric.rb', line 130

def decimeters_in_meters
  self * DECI
end

#decrement(amount = 1.0) ⇒ Object 



136
137
138
 
# File 'lib/active_object/numeric.rb', line 136

def decrement(amount = 1.0)
  self + amount
end

#degrees_to_radians ⇒ Object Also known as: degree_to_radians 



140
141
142
 
# File 'lib/active_object/numeric.rb', line 140

def degrees_to_radians
  self * Math::PI / 180.0
end

#distance(num) ⇒ Object 



146
147
148
 
# File 'lib/active_object/numeric.rb', line 146

def distance(num)
  (self - num).abs
end

#divide(num) ⇒ Object 



150
151
152
 
# File 'lib/active_object/numeric.rb', line 150

def divide(num)
  self / num
end

#exabytes_in_bytes ⇒ Object Also known as: exabyte_in_bytes 



154
155
156
 
# File 'lib/active_object/numeric.rb', line 154

def exabytes_in_bytes
  self * EXABYTE
end

#feet_in_inches ⇒ Object Also known as: foot_in_inches 



160
161
162
 
# File 'lib/active_object/numeric.rb', line 160

def feet_in_inches
  self * FEET
end

#gigabytes_in_bytes ⇒ Object Also known as: gigabyte_in_bytes 



166
167
168
 
# File 'lib/active_object/numeric.rb', line 166

def gigabytes_in_bytes
  self * GIGABYTE
end

#grams_in_grams ⇒ Object Also known as: gram_in_grams 



172
173
174
 
# File 'lib/active_object/numeric.rb', line 172

def grams_in_grams
  self
end

#greater_than?(num) ⇒ Boolean

Returns:

  • (Boolean) 


178
179
180
 
# File 'lib/active_object/numeric.rb', line 178

def greater_than?(num)
  num < self
end

#greater_than_or_equal_to?(num) ⇒ Boolean

Returns:

  • (Boolean) 


182
183
184
 
# File 'lib/active_object/numeric.rb', line 182

def greater_than_or_equal_to?(num)
  num <= self
end

#hectograms_in_grams ⇒ Object Also known as: hectogram_in_grams 



186
187
188
 
# File 'lib/active_object/numeric.rb', line 186

def hectograms_in_grams
  self * HECTO
end

#hectometers_in_meters ⇒ Object Also known as: hectometer_in_meters 



192
193
194
 
# File 'lib/active_object/numeric.rb', line 192

def hectometers_in_meters
  self * HECTO
end

#hours_in_seconds ⇒ Object Also known as: hour_in_seconds 



198
199
200
 
# File 'lib/active_object/numeric.rb', line 198

def hours_in_seconds
  self * HOUR
end

#inches_in_inches ⇒ Object Also known as: inch_in_inches 



204
205
206
 
# File 'lib/active_object/numeric.rb', line 204

def inches_in_inches
  self
end

#increment(amount = 1.0) ⇒ Object 



210
211
212
 
# File 'lib/active_object/numeric.rb', line 210

def increment(amount = 1.0)
  self + amount
end

#inside?(start, finish) ⇒ Boolean

Returns:

  • (Boolean) 


214
215
216
 
# File 'lib/active_object/numeric.rb', line 214

def inside?(start, finish)
  (start < self) && (finish > self)
end

#kilobytes_in_bytes ⇒ Object Also known as: kilobyte_in_bytes 



218
219
220
 
# File 'lib/active_object/numeric.rb', line 218

def kilobytes_in_bytes
  self * KILOBYTE
end

#kilograms_in_grams ⇒ Object Also known as: kilogram_in_grams 



230
231
232
 
# File 'lib/active_object/numeric.rb', line 230

def kilograms_in_grams
  self * KILO
end

#kilometers_in_meters ⇒ Object Also known as: kilometer_in_meters 



224
225
226
 
# File 'lib/active_object/numeric.rb', line 224

def kilometers_in_meters
  self * KILO
end

#less_than?(num) ⇒ Boolean

Returns:

  • (Boolean) 


236
237
238
 
# File 'lib/active_object/numeric.rb', line 236

def less_than?(num)
  num > self
end

#less_than_or_equal_to?(num) ⇒ Boolean

Returns:

  • (Boolean) 


240
241
242
 
# File 'lib/active_object/numeric.rb', line 240

def less_than_or_equal_to?(num)
  num >= self
end

#megabytes_in_bytes ⇒ Object Also known as: megabyte_in_bytes 



250
251
252
 
# File 'lib/active_object/numeric.rb', line 250

def megabytes_in_bytes
  self * MEGABYTE
end

#meters_in_meters ⇒ Object Also known as: meter_in_meters 



256
257
258
 
# File 'lib/active_object/numeric.rb', line 256

def meters_in_meters
  self
end

#metric_tons_in_grams ⇒ Object Also known as: metric_ton_in_grams 



244
245
246
 
# File 'lib/active_object/numeric.rb', line 244

def metric_tons_in_grams
  self * METRIC_TON
end

#miles_in_inches ⇒ Object Also known as: mile_in_inches 



262
263
264
 
# File 'lib/active_object/numeric.rb', line 262

def miles_in_inches
  self * MILE
end

#millenniums_in_seconds ⇒ Object Also known as: millennium_in_seconds 



268
269
270
 
# File 'lib/active_object/numeric.rb', line 268

def millenniums_in_seconds
  self * MILLENNIUM
end

#milligrams_in_grams ⇒ Object Also known as: milligram_in_grams 



274
275
276
 
# File 'lib/active_object/numeric.rb', line 274

def milligrams_in_grams
  self * MILLI
end

#millimeters_in_meters ⇒ Object Also known as: millimeter_in_meters 



280
281
282
 
# File 'lib/active_object/numeric.rb', line 280

def millimeters_in_meters
  self * MILLI
end

#minutes_in_seconds ⇒ Object Also known as: minute_in_seconds 



286
287
288
 
# File 'lib/active_object/numeric.rb', line 286

def minutes_in_seconds
  self * MINUTE
end

#multiple_of?(number) ⇒ Boolean

Returns:

  • (Boolean) 


296
297
298
 
# File 'lib/active_object/numeric.rb', line 296

def multiple_of?(number)
  number.zero? ? zero? : modulo(number).zero?
end

#multiply(num) ⇒ Object 



292
293
294
 
# File 'lib/active_object/numeric.rb', line 292

def multiply(num)
  self * num
end

#nautical_miles_in_inches ⇒ Object Also known as: nautical_mile_in_inches 



300
301
302
 
# File 'lib/active_object/numeric.rb', line 300

def nautical_miles_in_inches
  self * NAUTICAL_MILE
end

#negative? ⇒ Boolean

rubocop:disable Style/NumericPredicate, Style/YodaCondition

Returns:

  • (Boolean) 


307
308
309
 
# File 'lib/active_object/numeric.rb', line 307

def negative?
  0 > self
end

#ordinal ⇒ Object

rubocop:enable Style/NumericPredicate, Style/YodaCondition



312
313
314
315
316
317
318
319
320
321
322
323
 
# File 'lib/active_object/numeric.rb', line 312

def ordinal
  if (11..13).cover?(abs % 100)
    'th'
  else
    case abs % 10
    when 1 then 'st'
    when 2 then 'nd'
    when 3 then 'rd'
    else 'th'
    end
  end
end

#ordinalize ⇒ Object 



325
326
327
 
# File 'lib/active_object/numeric.rb', line 325

def ordinalize
  "#{self}#{ordinal}"
end

#ounces_in_ounces ⇒ Object Also known as: ounce_in_ounces 



329
330
331
 
# File 'lib/active_object/numeric.rb', line 329

def ounces_in_ounces
  self
end

#outside?(start, finish) ⇒ Boolean

Returns:

  • (Boolean) 


335
336
337
 
# File 'lib/active_object/numeric.rb', line 335

def outside?(start, finish)
  (start > self) || (finish < self)
end

#pad(options = {}) ⇒ Object 



339
340
341
342
343
344
 
# File 'lib/active_object/numeric.rb', line 339

def pad(options = {})
  pad_number = options[:pad_number] || 0
  precision = options[:precision] || 3

  to_s.rjust(precision, pad_number.to_s)
end

#pad_precision(options = {}) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity rubocop:disable Metrics/MethodLength, Metrics/PerceivedComplexity



348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
 
# File 'lib/active_object/numeric.rb', line 348

def pad_precision(options = {})
  pad_number = options[:pad_number] || 0
  precision = options[:precision] || 2
  separator = options[:separator] || '.'
  string = to_s

  string << separator unless string.include?(separator)
  ljust_count = string.split(separator).first.length
  ljust_count += (string.count(separator) + precision) if precision.positive?

  if ljust_count >= string.length
    string.ljust(ljust_count, pad_number.to_s)
  else
    string[0..(ljust_count - 1)]
  end
end

#percentage_of(number) ⇒ Object

rubocop:enable Metrics/AbcSize, Metrics/CyclomaticComplexity rubocop:enable Metrics/MethodLength, Metrics/PerceivedComplexity



367
368
369
370
 
# File 'lib/active_object/numeric.rb', line 367

def percentage_of(number)
  return 0 if zero? || number.zero?
  (to_f / number.to_f) * 100.0
end

#petabytes_in_bytes ⇒ Object Also known as: petabyte_in_bytes 



372
373
374
 
# File 'lib/active_object/numeric.rb', line 372

def petabytes_in_bytes
  self * PETABYTE
end

#positive? ⇒ Boolean

rubocop:disable Style/NumericPredicate, Style/YodaCondition

Returns:

  • (Boolean) 


379
380
381
 
# File 'lib/active_object/numeric.rb', line 379

def positive?
  0 < self
end

#pounds_in_ounces ⇒ Object Also known as: pound_in_ounces

rubocop:enable Style/NumericPredicate, Style/YodaCondition



384
385
386
 
# File 'lib/active_object/numeric.rb', line 384

def pounds_in_ounces
  self * POUND
end

#power(num) ⇒ Object 



390
391
392
 
# File 'lib/active_object/numeric.rb', line 390

def power(num)
  self**num
end

#root(num) ⇒ Object 



394
395
396
 
# File 'lib/active_object/numeric.rb', line 394

def root(num)
  self**(1.0 / num)
end

#seconds_in_seconds ⇒ Object Also known as: second_in_seconds 



398
399
400
 
# File 'lib/active_object/numeric.rb', line 398

def seconds_in_seconds
  self
end

#stones_in_ounces ⇒ Object Also known as: stone_in_ounces 



404
405
406
 
# File 'lib/active_object/numeric.rb', line 404

def stones_in_ounces
  self * STONE
end

#subtract(num) ⇒ Object 



410
411
412
 
# File 'lib/active_object/numeric.rb', line 410

def subtract(num)
  self - num
end

#terabytes_in_bytes ⇒ Object Also known as: terabyte_in_bytes 



414
415
416
 
# File 'lib/active_object/numeric.rb', line 414

def terabytes_in_bytes
  self * TERABYTE
end

#to_byte(from, to) ⇒ Object 



420
421
422
423
 
# File 'lib/active_object/numeric.rb', line 420

def to_byte(from, to)
  assert_inclusion_of_valid_keys!(BYTE_KEYS, from, to)
  to_f * 1.send("#{from}_in_bytes").to_f / 1.send("#{to}_in_bytes").to_f
end

#to_currency(options = {}) ⇒ Object 



425
426
427
428
429
 
# File 'lib/active_object/numeric.rb', line 425

def to_currency(options = {})
  unit = options[:unit] || '$'

  "#{unit}#{pad_precision(options.only(:precision))}"
end

#to_length(from, to) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
 
# File 'lib/active_object/numeric.rb', line 432

def to_length(from, to)
  assert_inclusion_of_valid_keys!(LENGTH_KEYS.values.flatten, from, to)
  metric_keys = LENGTH_KEYS.fetch(:metric)
  return self if from == to
  metrics_included_from = metric_keys.include?(from)

  case to
  when :meter, :meters, :millimeter, :millimeters, :centimeter, :centimeters, :decimeter,
       :decimeters, :decameter, :decameters, :hectometer, :hectometers, :kilometer, :kilometers
    if metrics_included_from
      to_f * 1.send("#{from}_in_meters").to_f / 1.send("#{to}_in_meters").to_f
    else
      to_f * ((1.send("#{from}_in_inches").to_f * 0.0254) / 1.send("#{to}_in_meters").to_f)
    end
  when :inch, :inches, :foot, :feet, :yard, :yards, :mile, :miles, :nautical_mile, :nautical_miles
    if metrics_included_from
      to_f * ((1.send("#{from}_in_meters").to_f * 39.3701) / 1.send("#{to}_in_inches").to_f)
    else
      to_f * 1.send("#{from}_in_inches").to_f / 1.send("#{to}_in_inches").to_f
    end
  end
end

#to_mass(from, to) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
 
# File 'lib/active_object/numeric.rb', line 457

def to_mass(from, to)
  assert_inclusion_of_valid_keys!(MASS_KEYS.values.flatten, from, to)
  metric_keys = MASS_KEYS.fetch(:metric)
  return self if from == to
  metrics_included_from = metric_keys.include?(from)

  case to
  when :gram, :grams, :milligram, :milligrams, :centigram, :centigrams, :decigram, :decigrams,
       :decagram, :decagrams, :hectogram, :hectograms, :kilogram, :kilograms, :metric_ton,
       :metric_tons
    if metrics_included_from
      to_f * 1.send("#{from}_in_grams").to_f / 1.send("#{to}_in_grams").to_f
    else
      to_f * ((1.send("#{from}_in_ounces") * 28.3495).to_f / 1.send("#{to}_in_grams").to_f)
    end
  when :ounce, :ounces, :pound, :pounds, :stone, :stones, :ton, :tons
    if metrics_included_from
      to_f * ((1.send("#{from}_in_grams") * 0.035274).to_f / 1.send("#{to}_in_ounces").to_f)
    else
      to_f * 1.send("#{from}_in_ounces").to_f / 1.send("#{to}_in_ounces").to_f
    end
  end
end

#to_nearest_value(values = []) ⇒ Object

rubocop:enable Metrics/AbcSize, Metrics/MethodLength



482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
 
# File 'lib/active_object/numeric.rb', line 482

def to_nearest_value(values = [])
  return self if values.length.zero?

  value = values.first
  difference = (self - value).abs

  values.each do |val|
    if (self - val).abs < difference
      difference = (self - val).abs
      value = val
    end
  end

  value
end

#to_percentage(options = {}) ⇒ Object 



498
499
500
501
502
 
# File 'lib/active_object/numeric.rb', line 498

def to_percentage(options = {})
  unit = options[:unit] || '%'

  "#{pad_precision(options.only(:precision))}#{unit}"
end

#to_temperature(from, to) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity



505
506
507
508
509
510
511
512
513
514
515
516
517
 
# File 'lib/active_object/numeric.rb', line 505

def to_temperature(from, to)
  assert_inclusion_of_valid_keys!(TEMPERATURE_KEYS, from, to)
  return self if from == to

  case to
  when :celsius
    from == :kelvin ? (self - 273.15) : ((self - 32.0) * 5.0 / 9.0)
  when :fahrenheit
    from == :kelvin ? (1.8 * (self - 273.15) + 32.0) : ((self * 9.0 / 5.0) + 32.0)
  when :kelvin
    from == :celsius ? (self + 273.15) : (((self - 32.0) * 5.0 / 9.0) + 273.15)
  end
end

#to_time(from, to) ⇒ Object

rubocop:enable Metrics/AbcSize, Metrics/CyclomaticComplexity



520
521
522
523
 
# File 'lib/active_object/numeric.rb', line 520

def to_time(from, to)
  assert_inclusion_of_valid_keys!(TIME_KEYS, from, to)
  (to_f * 1.send("#{from}_in_seconds").to_f) / 1.send("#{to}_in_seconds").to_f
end

#tons_in_ounces ⇒ Object Also known as: ton_in_ounces 



525
526
527
 
# File 'lib/active_object/numeric.rb', line 525

def tons_in_ounces
  self * TON
end

#weeks_in_seconds ⇒ Object Also known as: week_in_seconds 



531
532
533
 
# File 'lib/active_object/numeric.rb', line 531

def weeks_in_seconds
  self * WEEK
end

#within?(number, epsilon = 0.01) ⇒ Boolean

Returns:

  • (Boolean) 


537
538
539
540
541
542
543
544
 
# File 'lib/active_object/numeric.rb', line 537

def within?(number, epsilon = 0.01)
  return number == self if epsilon.zero?

  alpha = to_f
  beta = number.to_f

  alpha.zero? || beta.zero? ? (alpha - beta).abs < epsilon : (alpha / beta - 1).abs < epsilon
end

#yards_in_inches ⇒ Object Also known as: yard_in_inches 



546
547
548
 
# File 'lib/active_object/numeric.rb', line 546

def yards_in_inches
  self * YARD
end

#years_in_seconds ⇒ Object Also known as: year_in_seconds 



552
553
554
 
# File 'lib/active_object/numeric.rb', line 552

def years_in_seconds
  self * YEAR
end