1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
=head1 NAME
mypragma - an example of a user pragma
=head1 SYNOPSIS
In your code
use mypragma; # Enable the pragma
mypragma::in_effect() # returns true; pragma is enabled
no mypragma;
mypragma::in_effect() # returns false; pragma is not enabled
=head1 DESCRIPTION
An example of how to write a pragma.
=head1 AUTHOR
Rafael Garcia-Suarez
=cut
package mypragma;
use strict;
use warnings;
sub import {
$^H{mypragma} = 42;
}
sub unimport {
$^H{mypragma} = 0;
}
sub in_effect {
my $hinthash = (caller(0))[10];
return $hinthash->{mypragma};
}
1;
|