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Postings from March 2014
On Tue, Mar 25, 2014 at 10:48 AM, Ed Avis <eda@waniasset.com> wrote:
> Hmm, you are right, C<{} my $x;> is also an error.
>
Also, C<< { } { } >>.
> I think this is a bit fishy; in other C-like languages an empty block can
> appear in any
> place where a nonempty one can. Could that become true for Perl too?
>
You seem to forget that { } is also the hash construction operator. { } is
far more likely to be an empty hash constructor than an empty block. You
can disambiguate by placing a ";" at the start of the block (C<< {; } >>).
In the original scenario, you could avoid the problem by commenting the
block by adding C<< if (0) >>.
Perl could check if the "{ }" is at the start of statement, but any
statement can be an expression. Check check for void context since context
isn't know yet.
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