Module: Measured::Arithmetic

Extended by:
Forwardable
Included in:
Measurable
Defined in:
lib/measured/arithmetic.rb

Instance Method Summary collapse

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/measured/arithmetic.rb', line 6

def +(other)
  arithmetic_operation(other, :+)
end

#-(other) ⇒ Object 



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# File 'lib/measured/arithmetic.rb', line 10

def -(other)
  arithmetic_operation(other, :-)
end

#-@ ⇒ Object 



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# File 'lib/measured/arithmetic.rb', line 14

def -@
  self.class.new(-self.value, self.unit)
end

#coerce(other) ⇒ Object 



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# File 'lib/measured/arithmetic.rb', line 22

def coerce(other)
  if other.is_a?(self.class)
    [other, self]
  elsif other.is_a?(Numeric) && other.zero?
    [self.class.new(other, self.unit), self]
  else
    raise TypeError, "Cannot coerce #{other.class} to #{self.class}"
  end
end

#nonzero? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/measured/arithmetic.rb', line 36

def nonzero?
  value.nonzero? ? self : false
end

#scale(other) ⇒ Object 



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# File 'lib/measured/arithmetic.rb', line 18

def scale(other)
  self.class.new(self.value * other, self.unit)
end

#to_i ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/measured/arithmetic.rb', line 32

def to_i
  raise TypeError, "#{self.class} cannot be converted to an integer"
end