Hi

I was expecting that a prototype sub foo(&) will parse foo {$x} with precedence foo(sub {$x}) but ...

use strict;
use warnings;

sub foo (&){ }
sub bar {}


my ($Q,$t) = (10,2);

bar ($Q) + bar ($t);

foo {$Q} + foo {$t}; # line 12

[download]

C:/Strawberry/perl/bin\perl.exe -w d:/tmp/pm/sym.pl 
Too many arguments for main::foo at d:/tmp/pm/sym.pl line 12, near "};
+"
Execution of d:/tmp/pm/sym.pl aborted due to compilation errors.

[download]

what is happening here?

Is that a bug or a feature?

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

update: s/d/foo/

update

that's unfortunate, prototypes don't seem to influence precedence at all ... :/

use strict;
use warnings;

sub bla($) {shift}
my ($Q,$t,$res) = (10,2);

sub tst {
    print $res= bla $Q / bla $t;
}

use B::Deparse;

print B::Deparse->new('-p')->coderef2text(\&tst);

[download]

C:/Strawberry/perl/bin\perl.exe -w d:/tmp/pm/sym.pl 
{
    use warnings;
    use strict;
    print(($res = bla(($Q / bla($t)))));
}

[download]

In reply to (SOLVED) parsing problems with prototype blocks (precedence) by LanX

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