On Sun, Aug 20, 2006 at 03:55:56PM -0600, Luke Palmer wrote:
> >The important question here is this one:
> >
> > - when 'uncommented', is it a no-op?
> >
> >Which isn't true for #{}/{}, because {} introduces new lexical
> >scope.
> Why would you care about introducing a new lexical scope? You would
> care about that if you used a variable you declared in the commented
> code in the code below it, which is broken.
Typically because you have several versions that you want to switch
between, and you'd rather add a few characters of comment rather than
spend the time rearranging the code to use ifs or subs or
something. It's something you might do when debugging or experimenting
(especially under time pressure) - at least, that's how I use '#if 0'
in C.
Using <<'#END' (or rather, q:to'#END') is actually not that bad an
idea... it'd work in most places where #{} would give trouble. Unless
anybody has any better ideas, that could be a useful idiom to
remember.
