use strict;
$MyClass::foo = 'boink';

sub bar {
    no strict; # strict turned off for this sub
}
...  # strict again in effect
[download]

They live in files which are imported, like modules - but they act like switches and turn on and off certain flags at compile time, for their lexical scope.

There's no reason to turn strict or warnings off for a "working" version, once the "development" versions behave with them. Again: *no* *reason*. And in case you ask again - no, there is no reason, period.

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}