Commit | Line | Data |
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a0d0e21e LW |
1 | package subs; |
2 | ||
f06db76b AD |
3 | =head1 NAME |
4 | ||
5 | subs - Perl pragma to predeclare sub names | |
6 | ||
7 | =head1 SYNOPSIS | |
8 | ||
9 | use subs qw(frob); | |
10 | frob 3..10; | |
11 | ||
12 | =head1 DESCRIPTION | |
13 | ||
14 | This will predeclare all the subroutine whose names are | |
15 | in the list, allowing you to use them without parentheses | |
16 | even before they're declared. | |
17 | ||
55497cff | 18 | Unlike pragmas that affect the C<$^H> hints variable, the C<use vars> and |
19 | C<use subs> declarations are not BLOCK-scoped. They are thus effective | |
20 | for the entire file in which they appear. You may not rescind such | |
21 | declarations with C<no vars> or C<no subs>. | |
22 | ||
23 | See L<perlmod/Pragmatic Modules> and L<strict/strict subs>. | |
f06db76b AD |
24 | |
25 | =cut | |
a0d0e21e LW |
26 | require 5.000; |
27 | ||
a0d0e21e LW |
28 | sub import { |
29 | my $callpack = caller; | |
30 | my $pack = shift; | |
31 | my @imports = @_; | |
32 | foreach $sym (@imports) { | |
33 | *{"${callpack}::$sym"} = \&{"${callpack}::$sym"}; | |
34 | } | |
35 | }; | |
36 | ||
37 | 1; |