From: Simon Strandgaard <0bz63fz3m1qt3001@...>
Date: 2003-07-22T01:23:07+09:00
Subject: Re: Proposal: Array#to_h, to simplify hash generation

On Tue, 22 Jul 2003 00:59:50 +0900, Brian Candler wrote:
 
> Can I suggest another name - "collect_hash" - since that's basically what it
> is?

'collect_hash' sounds nice

p [1, 2, 3].collect_hash { |i| i, "f(#{i})" }
#=> {1=>"f(1)", 2=>"f(3)", 3=>"f(3)"}


Other possible names (less great):
*  build_hash
*  make_hash
*  to_hash
*  map_hash
*  combine(_to_hash)


May I suggest a Enum#build routine, working like this pseudo code

[1, 2, 3].build(Hash) { |i| i, f(i) }
#=> {1=>"f(1)", 2=>"f(3)", 3=>"f(3)"}

[1, 2, 3].build(String) { |i| i.class }
#=> "FixnumFixnumFixnum"

[1, 2, 3].build(Array) { |i| Regex.new(i.to_s) }
#=> [/1/, /2/, /3/]

Is this madness, appending elements this way ?
Especialy will this work for hash ?

--
Simon Strandgaard