From: Robert Klemme <shortcutter@...>
Date: 2009-02-02T02:44:55+09:00
Subject: Re: Array#to_h

On 31.01.2009 21:03, David A. Black wrote:
> Hi --
> 
> On Sun, 1 Feb 2009, Roger Pack wrote:
> 
>> Not that I would find it useful at all, but is there is a Hash#to_a
>> should there not be an Array#to_h?
> 
> Not if it's not useful :-) It might be, though. It's been talked about
> a lot over the years. As I recall, part of the problem is the question
> of what it would mean; for example, given this:
> 
>    ["a","b","c","d"].to_h
> 
> is it
> 
>    ["a" => "b", "c" => "d"]
> 
> or
> 
>    [0 => "a", 1 => "b", ....]
> 
> ?

Or even raise an Exception because Array#to_h expects a nested structure 
as is returned from various Hash methods (e.g. #select, #to_a - note, 
this is about to change in new versions of Ruby).

Kind regards

	robert