From: dblack@...
Date: 2002-09-20T00:05:44+09:00
Subject: Re: select and select

Hi --

On Thu, 19 Sep 2002, Yukihiro Matsumoto wrote:

> Hi,
>
> In message "select and select"
>     on 02/09/19, dblack@candle.superlink.net <dblack@candle.superlink.net> writes:
>
> |I'd like to suggest (again, but the first time it was buried in
> |another thread :-) that the new dual nature of "select" is kind of
> |awkward, and I'm wondering whether it's been finalized.
>
> Not yet, until 1.8.0 comes out.  (don't ask me when it will be.)
> But considering the loooong thread we had without conclusion, it is
> very hard to get a perfect name for the method.  But I'm still open.

Maybe it would seem a better fit if the two were combined?

  class Array
    alias :oldselect :select
    def select(*inds,&b)
      s = if inds.empty? then self else inds.map {|i| at(i)} end
      s = s.oldselect(&b) if b
      s
    end
  end

  arr = %w{ a b c d e }

  arr.select {|s| s == "c"}           # ["c"]
  arr.select(0,2,4)                   # ["a", "c", "e"]
  arr.select(0,2,4) { |s| s == "c" }  # ["c"]


I think I would still like this better:

  arr.at(0,2,4).select { |s| s == "c" }


David

-- 
David Alan Black                      | Register for RubyConf 2002!
home: dblack@candle.superlink.net     | November 1-3
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