Class: Method::Composition

Inherits:
Object show all
Defined in:
lib/core/facets/method/composition.rb

Overview

Method Composition class acts a proxy for composed methods.

Author:

  • Mike Burns

Instance Method Summary collapse

Constructor Details

#initialize(f, g) ⇒ Composition

Returns a new instance of Composition.



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# File 'lib/core/facets/method/composition.rb', line 9

def initialize(f,g)
  @f = f
  @g = g
end

Instance Method Details

#*(h) ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 15

def *(h)
  Composition.new(self, h)
end

#[](*x) ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 56

def [](*x)
  call(*x)
end

#^(n) ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 20

def ^(n)
  return self if n < 2
  Composition.new(self, self ^ (n-1))
end

#arity ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 41

def arity
  @g.arity
end

#call(x) ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 51

def call(x)
  @f.call(*@g.call(*x))
end

#inspect ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 36

def inspect
  "#<Method::Composition: #{@f.inspect} * #{@g.inspect}>"
end

#owner ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 26

def owner
  @g.owner
end

#receiver ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 31

def receiver
  @g.receiver
end

#to_proc ⇒ Object 



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# File 'lib/core/facets/method/composition.rb', line 46

def to_proc
  Proc.new {|x| @f.call(*@g.call(*x)) }
end