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Re^2: Unexpected behavior of function 'say'

by tobyink (Abbot)
on Mar 05, 2013 at 15:32 UTC ( #1021851=note: print w/ replies, xml ) Need Help??


in reply to Re: Unexpected behavior of function 'say'
in thread Unexpected behavior of function 'say'

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.

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name


Comment on Re^2: Unexpected behavior of function 'say'
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Re^3: Unexpected behavior of function 'say'
by LanX (Abbot) on Mar 05, 2013 at 15:48 UTC
    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 @_; }

    Cheers Rolf

      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.

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