From: Peter Vandenabeele <peter@...>
Date: 2010-12-26T17:47:19+09:00
Subject: Re: array index inside map function

Siddharth Venkatesan wrote in post #970728:
> Hi all,
>
> how can i access the index of the element inside the map argument block?
>
> "101010,234,876".split(",").map {|c| get_something(c)}
>
> this works. But the problem is i need to apply the get_something on only
> the
> second and third element of the array. How can I check the index of the
> element inside the map block?

There is each_with_index, but that has the "each" functionality
and not the "map"/"collect" functionality.

That would be (not tested):
  result = []
  "101010,234,876".split(",").each_with_index {|c, i| result << 
do_something(c,i)}

HTH,

Peter

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