Re^2: use warnings uninitialized to my own sub?


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Re^2: use warnings uninitialized to my own sub?

by iaw4 (Monk)

on Dec 08, 2010 at 08:53 UTC ( [id://875966]=note: print w/replies, xml )

Need Help??

in reply to Re: use warnings uninitialized to my own sub?
in thread use warnings uninitialized to my own sub?

works like a charm:


#!/usr/bin/perl -w
use strict;
#use warnings FATAL => qw{ uninitialized };
local $SIG{__WARN__} = sub { die "your variable is not defined!\n"; };

my $var;
print "the variable is $var\n";
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thank you.

Comment on Re^2: use warnings uninitialized to my own sub? Download Code

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Re^3: use warnings uninitialized to my own sub?
by JavaFan (Canon) on Dec 08, 2010 at 11:50 UTC

Do realize that the warnings handle does not discriminate against the warning. If it installed, it will be called for every warning - be it from an uninitialized variable or something else. (Note that uninitialized variable is a bit of a misnomer, the trigger is an undefined value (not an undefined variable). Undefined values may happen because no value was every assigned to the variable, but it may also be an undefined value was assigned to it).

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