Re: Unexpected behavior of function 'say'

[LanX]

in reply to Unexpected behavior of function 'say'

hmm not in 5.10

lanx@nc10-ubuntu:~$ perl
use strict;
use warnings;

say STDOUT 'like a charm';
Can't locate object method "say" via package "IO::Handle" at - line 4.

But the last line should lead to the answer.

print FH is (supposed to be) indirect object syntax of the filehandle-object, so somehow the method say was activated by default in your environment.

Anyway calling say w/o FH shouldn't work!

[tobyink]

This is because of a change in Perl 5.14:

Filehandle method calls load IO::File on demand

The OP's code does work in Perl 5.10, if you run it with the -MIO::Handle parameter to manually load the IO::Handle package.

[LanX]

So print FH was magic in doing so prior to 5.14?

I hate breakes in symmetry...

BTW: I checked IO::Handle , it's a normal method and features aren't checked.

sub say {
    @_ or croak 'usage: $io->say(ARGS)';
    my $this = shift;
    local $\ = "\n";
    print $this @_;
}

[ikegami]

The point of the feature is to avoid to break existing function calls. Without feature, the code the OP posted is still the very same method call as it was before 5.10, so everything is working as it should.