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Re^2: A simple Comparison

by njh@bandsman.co.uk (Acolyte)
on Jul 24, 2015 at 14:19 UTC ( [id://1136172]=note: print w/replies, xml ) Need Help??


in reply to Re: A simple Comparison
in thread A simple Comparison

This doesn't work if one or both of the objects is global, Storable::freeze will fail with "Can't store GLOB items".

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Re^3: A simple Comparison
by choroba (Cardinal) on Jul 25, 2015 at 00:00 UTC
    GLOB and "global" are two different things. You can easily freeze global variables, but you can't freeze typeglobs, see "Typeglobs and Filehandles" in perldata. 
    use Storable;
bless our $x = [], 'My::class';
print Storable::freeze($x);         # No error, $x is global.

bless my $y = \*STDERR, 'My::class';
print Storable::freeze($y);         # Can't store GLOB items, $y is le
+xical.

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