Module: Enumerable

Defined in:

lib/mixers/enumargs.rb

Overview

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.

require 'enumargs'

class T
  include Enumerable::Arguments
  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]

Defined Under Namespace

Modules: Arguments