On Fri, 9 Aug 2002, Adam Lopresto wrote:
: I was wondering whether the Perl 'while (<>){' idiom will continue to be
: supported in Perl 6? I seem to recall people posting example code the list
: using it (although I can't dig any up), but it seems to me that if Perl 6's
: lazy list implementation is sufficiently smart, it could just be replaced with
: 'for <> {'. The only issues I can see are people using <> inside the loop, and
: maybe something about the scope of $_. (Does a topicalized $_ change the value
: of $_ outside of the loop?)
Of the two constructs, I lean toward only making C<for> topicalize.
Possibly you can force an explicit topicalization on a C<while>
like this:
while something() -> $_ { ... }
(Had an interesting typo there. I put => insteaqd of ->. I wonder
how much trouble that sort of thing is gonna cause. Maybe pairs
can be disallowed or warned about where a pointy sub might be
expected.)
Larry
