module Enumerable
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]