From: Trans <transfire@...>
Date: 2007-01-04T01:30:12+09:00
Subject: Re: Mini-RCR: Extra Argument for Array#join


Robert Dober wrote:
> slice(0..-2).old_join(sep) << last_sep << last.to_s
> or maybe
> "#{slice(0..-2).old_join(sep)}#{last_sep}#{last}"
>
> I like your approach of using old_join again, it seems so abstraction based,

:-)

> but as we are looking for performance ;)

Yep, even better.

I'll credit you and add this to Facets, but I'd rather name it
something other than #join. Right now I have #join_sentence, but that's
rather long. Any suggestions?

And for what it's worth, IMO a block additon to join certainly couldn't
hurt. In fact it would be quite nice for alternating separators.

  hash.to_a.flatten.join{ |index| index % 2 == 0 ? ':' : "\n" }

Or something like that.

T.