Class: Functional::Reduce

Inherits:
Base show all
Defined in:
lib/functional.rb

Instance Attribute Summary

Attributes inherited from Base

#caller, #exe, #next

Instance Method Summary collapse

Methods inherited from Base

#base_fun, #clean, #to_proc

Constructor Details

#initialize(iv = ::Functional::DEFAULT, *a, &exe) ⇒ Reduce 



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# File 'lib/functional.rb', line 218

def initialize iv = ::Functional::DEFAULT, *a, &exe
  super *a, &exe
  iv = Array.method :new  if ::Functional::DEFAULT == iv
  @buf = if iv.kind_of?( ::Proc) || iv.kind_of?( ::Method)
      Hash.new {|h,k| h[k] = iv.call }
    else
      {}.tap {|h| h.default = iv }
    end
end

Instance Method Details

#end ⇒ Object 



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# File 'lib/functional.rb', line 233

def end
  @buf.each &@next.method( :call)
  @next.end
end

#reduce_fun(k, *a) ⇒ Object Also known as: call 



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# File 'lib/functional.rb', line 228

def reduce_fun k, *a
  @buf[ k] = @exe.call k, @buf[ k], *a
end