From: Stefano Crocco <stefano.crocco@...>
Date: 2009-02-03T02:17:28+09:00
Subject: Re: How to know the index value on the each method

Alle Monday 02 February 2009, Elias Orozco ha scritto:
> Hello,
>
> I was wondering if there is a way to access the current index value when
> using the each method to iterate over an array. For example,
>
> @pancakes.each do |pancake|
>
>   puts pancake
>   # How can I ask which is the current index value of pancake. I wish to
> know in what position is the pancake object on the array without using a
> local integer variable to count up.
>
> end
>
> Thanks,
>
> Elías

You can use Array#each_with_index, instead of Array#each. Or you can use 
Array#index to obtain the index of the current object, but it only works if 
the array doesn't contain duplicates: if there are duplicates (according to 
==), Array#index always returns the index of the first item.

I hope this helps

Stefano