EnumerablePass

This is a simple reimplementation of the core Enumerable module to allow the methods to take and pass-on arbitrary arguments to the underlying each call. This library uses Enumerator and scans Enumerable so it can alwasy stay in sync.

NOTE Any Enumerable method with a negative arity cannot do pass arguments due to ambiguity in the argument count. So the methods inject and zip do NOT work this way, but simply work as they do in Enumerable. The method find (and detect) though has been made to work by removing its rarely used optional parameter and providing instead an optional keyword parameter (:ifnone => …). Please keep these difference in mind.

  class T
    include EnumerablePass
    def initialize(arr)
      @arr = arr
    end
    def each(n)
      arr.each{ |e| yield(e+n) }
    end
  end

  t = T.new([1,2,3])
  t.collect(4)
  #=> [5,6,7]

Authors

Thomas Sawyer

Copying

Ruby License

This module is free software. You may use, modify, and/or redistribute this software under the same terms as Ruby.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Required Files

enumerator