Class: Decimal

Inherits:
Object
  • Object
show all
Defined in:
lib/ebutil.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Decimal

Returns a new instance of Decimal.



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# File 'lib/ebutil.rb', line 76

def initialize(value)
  @value = value
end

Class Method Details

.from_string(string, thousand_sep = '.', decimal_sep = ',') ⇒ Object 



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# File 'lib/ebutil.rb', line 80

def self.from_string(string, thousand_sep = '.', decimal_sep = ',')
  string = string.to_s
  from_whole_and_part(*string.split(decimal_sep))
end

.from_whole_and_part(whole, part = 0) ⇒ Object 



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# File 'lib/ebutil.rb', line 85

def self.from_whole_and_part(whole, part = 0)
  new( whole.to_i * 100 + part.to_i * (whole.to_i >= 0 ? 1 : -1))
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/ebutil.rb', line 101

def +(other)
  return Decimal.from_value(value+other.value)
end

#-(other) ⇒ Object 



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# File 'lib/ebutil.rb', line 105

def -(other)
  return Decimal.from_value(value - other.value)
end

#==(other) ⇒ Object 



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# File 'lib/ebutil.rb', line 118

def ==(other)
  value == other.value
end

#inverse ⇒ Object 



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# File 'lib/ebutil.rb', line 109

def inverse
  return Decimal.new(-value)
end

#part ⇒ Object 



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# File 'lib/ebutil.rb', line 97

def part
  value.abs % 100
end

#sign ⇒ Object 



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# File 'lib/ebutil.rb', line 89

def sign
  value >= 0 ? 1 : -1
end

#to_s(decimal_sep = ',') ⇒ Object Also known as: inspect 



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# File 'lib/ebutil.rb', line 113

def to_s(decimal_sep = ',')
  sprintf("#{string_sign}%d#{decimal_sep}%02d", whole, part)
end

#whole ⇒ Object 



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# File 'lib/ebutil.rb', line 93

def whole
  value.abs / 100
end