On Sun, Aug 20, 2006 at 10:50:31AM -1000, Joshua Hoblitt wrote:
> > #{
> > if $baz {
> > $foo.bar
> > }
> > }
> >
> > To uncomment, remove the # before the {.
>
> This is exactly the type of construct that I had in mind. A couple of
> questions. Is code inside of a #{}:
>
> - parsed and required to be syntacticly correct?
> - does it still appear in emitted code?
> - what happens when a goto tries to enter into this block
> or a nested sub is invoked?
> - will the optimizer spend time on this block?
The important question here is this one:
- when 'uncommented', is it a no-op?
Which isn't true for #{}/{}, because {} introduces new lexical
scope. It's still a pretty good idea, but it's not as good as the C
preprocessor. if (0) has the same problem. Pod doesn't. Anybody able
to think up a non-pod construct that doesn't affect the code it wraps?
(Solutions which involve complicated modules are acceptable, so long
as the usage is not complicated and there is no run-time penalty)
