Class: Hash

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

Constant Summary collapse

NUMBER_CLASSES = 
[Integer, Fixnum, Bignum, Float, Rational]
SUPPORTED_CLASSES = 
NUMBER_CLASSES + [Hash, OpenStruct]

Instance Method Summary collapse

Instance Method Details

#*(num) ⇒ Object

Multiplication

Raises:

  • (TypeError) 


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# File 'lib/sumhash/hash.rb', line 44

def *(num)
  raise TypeError, "#{num.class} can't be coerced into Float"  unless NUMBER_CLASSES.include? num.class
  self.inject({}) do |res, (k, v)|
    res[k] = SUPPORTED_CLASSES.include?(v.class) ? v*num : v
    res
  end
end

#+(hash) ⇒ Object

Plus



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# File 'lib/sumhash/hash.rb', line 6

def +(hash)
  (self.keys + hash.keys).inject({}) do |sum, k|
    sum[k] = sum(self[k], hash[k])
    sum
  end
end

#+@ ⇒ Object

Unary plus



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# File 'lib/sumhash/hash.rb', line 30

def +@
  self
end

#-(hash) ⇒ Object

Minus



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# File 'lib/sumhash/hash.rb', line 14

def -(hash)
  (self.keys + hash.keys).inject({}) do |sum, k|
    sum[k] = sum(self[k], hash[k], :-)
    sum
  end
end

#-@ ⇒ Object

Unary minus



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# File 'lib/sumhash/hash.rb', line 22

def -@
  self.inject({}) do |res, (k, v)|
    res[k] = SUPPORTED_CLASSES.include?(v.class) ? -v : v
    res
  end
end

#/(num) ⇒ Object

Division

Raises:

  • (TypeError) 


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# File 'lib/sumhash/hash.rb', line 35

def /(num)
  raise TypeError, "#{num.class} can't be coerced into Float"  unless NUMBER_CLASSES.include? num.class
  self.inject({}) do |res, (k, v)|
    res[k] = SUPPORTED_CLASSES.include?(v.class) ? v/num : v
    res
  end
end