From: Mathieu Bouchard <matju@...>
Date: 2001-02-16T01:45:20+09:00
Subject: [ruby-talk:10910] Re: RubyChangeRequest #U002: new proper name for Hash#indexes, Array#indexes

On Thu, 15 Feb 2001, David Alan Black wrote:
> Having the single index return a single value, and multiple ones return
> an array, is in keeping with the behavior of #[], so in that sense it
> would be consistent.

Sorry, not really...

a = [2,3,5,7]
a[2]          #=> 5, one element in single mode
a[2..2]	      #=> [5], one element in multiple mode

Another possibility is instead of #at(*indices) it could be
#at(index_or_indices) where either a single value or an array of indices
could be passed. that way you may distinguish between the two modes. Add
another method #at!(indices) which modifies the array of indices
itself, to avoid creating two arrays. (But this is not the usual meaning
of "!".)

Currently I still prefer #values_at(*indices) though...


matju