From: spooq <spoooq@...>
Date: 2006-11-17T22:49:04+09:00
Subject: Re: #returning and #tap

On 11/17/06, Ross Bamford <rosco@roscopeco.remove.co.uk> wrote:
> On Fri, 17 Nov 2006 11:57:58 -0000, <dblack@wobblini.net> wrote:
>
> >> 'tap' had a different intent, though - "tee off the object without
> >> disturbing it" - even if it did the same thing in the end. So you
> >> would typically take a.foo.bar.baz.quux... and drop in a tap,
> >> a.foo.bar.tap {|i| puts "hi mom! this is #{i}"}.baz.quux, and take
> >> care not to modify i destructively.
> >
> > Although... there might be cases where disturbing the object would be
> > desireable.  For example, you could use it to work around the fact
> > that a lot of bang methods return nil when there's no change:
> >
> >    str = "abcde"
> >    a = str.tap {|s| s.gsub!(/z/,"x") }.split(//)
> >
>
> Sweet!

Noooooooooooo! Stop this meme now before it hurts someone!