use strict;
## restrict unsafe use of variables for rest of block
use strict 'vars'; ## restrict unsafe use of variables for rest of block
EX Code)
use strict 'vars';
use vars '$foe';
$SomePack::fee = 1;
my $file = 10;
$foe = 7;
$foo = 9;
use strict 'refs'; ## restrict unsafe use of references for rest of block
EX Code)
use strict 'refs';
$ref = \$foo;
print $$ref;
$ref = "foo";
print $$ref;
use strict 'subs'; ## restrict unsafe use of barewords for rest of block
EX Code)
use strict 'subs';
$SIG{PIPE} = Plumber;
# blows up (assuming Plumber sub not declared yet)
$SIG{PIPE} = "Plumber";
# okay, means "main::Plumber" really
$SIG{PIPE} = \e&Plumber; # preferred form
no strict;
오늘은 여기까징~~
