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comp.lang.ruby

Re: accessing the count/iteration # within an "each" ???

Tim Hunter

6/15/2007 9:41:00 PM

Greg Hauptmann wrote:
> Is there a way to access the count / iteration# within an "each"
> loop? i.e.
> how many times through the loop one is?
ruby$ ri Enumerable#each_with_index
--------------------------------------------- Enumerable#each_with_index
enum.each_with_index {|obj, i| block } -> enum
------------------------------------------------------------------------
Calls block with two arguments, the item and its index, for each
item in enum.

hash = Hash.new
%w(cat dog wombat).each_with_index {|item, index|
hash[item] = index
}
hash #=> {"cat"=>0, "wombat"=>2, "dog"=>1}



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