On Sun, 2017-07-02 at 11:16 -0400, Shawn H Corey wrote:
> On Sun, 2 Jul 2017 14:29:25 +0200
> Eric de Hont <eric-pml...@hobiho.nl> wrote:
> 
> > What it boils down to: use warnings as well as -w works, but -w is 
> > considered old fashioned.
> 
> The problem with -w is that it can't be turned off.

$ perl -le'
use warnings;
my $x;
{       no warnings;
        print $x;
        }
print $x;
'

Use of uninitialized value $x in print at -e line 7.

$ perl -wle'
my $x;
{       local $^W = 0;
        print $x;
        }
print $x;
'

Use of uninitialized value $x in print at -e line 6.

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