print $$ref; # ok
$ref = "foo";
print $$ref; # runtime error; normally ok
+ $file = "STDOUT";
+ print $file "Hi!"; # error; note: no comma after $file
+
+There is one exception to this rule:
+
+ $bar = \&{'foo'};
+ &$bar;
+
+is allowed so that C<goto &$AUTOLOAD> would not break under stricture.
+
=item C<strict vars>
This generates a compile-time error if you access a variable that wasn't
-localized via C<my()> or wasn't fully qualified. Because this is to avoid
+declared via "our" or C<use vars>,
+localized via C<my()>, or wasn't fully qualified. Because this is to avoid
variable suicide problems and subtle dynamic scoping issues, a merely
local() variable isn't good enough. See L<perlfunc/my> and
L<perlfunc/local>.
my $foo = 10; # ok, my() var
local $foo = 9; # blows up
+ package Cinna;
+ our $bar; # Declares $bar in current package
+ $bar = 'HgS'; # ok, global declared via pragma
+
The local() generated a compile-time error because you just touched a global
name without fully qualifying it.
+Because of their special use by sort(), the variables $a and $b are
+exempted from this check.
+
=item C<strict subs>
This disables the poetry optimization, generating a compile-time error if
you try to use a bareword identifier that's not a subroutine, unless it
-appears in curly braces or on the left hand side of the "=>" symbol.
+appears in curly braces or on the left hand side of the "=E<gt>" symbol.
use strict 'subs';
=back
-See L<perlmod/Pragmatic Modules>.
+See L<perlmodlib/Pragmatic Modules>.
=cut
+$strict::VERSION = "1.02";
+
+my %bitmask = (
+refs => 0x00000002,
+subs => 0x00000200,
+vars => 0x00000400
+);
+
sub bits {
my $bits = 0;
- foreach $sememe (@_) {
- $bits |= 0x00000002 if $sememe eq 'refs';
- $bits |= 0x00000200 if $sememe eq 'subs';
- $bits |= 0x00000400 if $sememe eq 'vars';
- }
+ foreach my $s (@_){ $bits |= $bitmask{$s} || 0; };
$bits;
}