[Edinburgh-pm] code style question

Miles Gould miles at assyrian.org.uk
Tue Aug 16 04:49:09 PDT 2011

On Tue, Aug 16, 2011 at 11:46 AM, Alex Brelsfoard
<alex.brelsfoard at gmail.com> wrote:
> if ($::var) {
>    ...
> }

I have never seen this before. Isn't it just referencing a variable in
the package whose name is empty?

> To my understanding this is a bit messy, and not to mention potentially
> dangerous as it kinda goes against the "use strict;" methodology, does it
> not?

perl -E 'use strict; $::fred = 7; say $::fred'

works fine for me! So I guess the point of this scheme is that it
allows you to use global variables (worse, *undeclared* global
variables) under the strict pragma. If that's the case, then my advice
is to dust off and nuke the site from orbit: it's the only way to be
sure. If your budget won't stretch to orbital nukes, then burning it
with fire may be an acceptable workaround.



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