From: Clifford Heath <clifford.heath@...>
Date: 2012-07-29T08:43:05+09:00
Subject: [ruby-core:46845] Re: [ruby-trunk - Feature #6808] Implicit index for enumerations

The inconsistency between operations over Arrays and Hashes isn't always avoidable, but consider:

h = Hash[1, 2, 3, 4, 5, 6]
a = [1, 2, 3, 4, 5, 6]

h[3]
=> 4
h.detect{|k, v| k == 3 }
#=> [3, 4]

a[3]
#=> 3
a.detect{|v| v == 3 }
#=> 3

Surely the block passed to Array#detect should receive the index, and
the result of a Hash#detect should be a value, not a [key, value] pair?

I don't expect this to be changed, but perhaps it might inform proposed changes.

Clifford Heath.