Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
404 views
in Technique[技术] by (71.8m points)

module - Is there a way to "use" a single file that in turn uses multiple others in Perl?

I'd like to create several modules that will be used in nearly all scripts and modules in my project. These could be used in each of my scripts like so:

#!/usr/bin/perl

use Foo::Bar;
use Foo::Baz;
use Foo::Qux;
use Foo::Quux;

# Potentially many more.

Is it possible to move all these use statements to a new module Foo::Corge and then only have to use Foo::Corge in each of my scripts and modules?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Something like this should work:

http://mail.pm.org/pipermail/chicago-talk/2008-March/004829.html

Basically, create your package with lots of modules:

package Lots::Of::Modules;
use strict; # strictly optional, really

# These are the modules we want everywhere we say "use Lots::Of::Modules".
# Any exports are re-imported to the module that says "use Lots::Of::Modules"
use Carp qw/confess cluck/;
use Path::Class qw/file dir/;
...

sub import {
    my $caller = caller;
    my $class  = shift;

    no strict;
    *{ $caller. '::'. $_ } = *{ $class. '::'. $_ }
       for grep { !/(?:BEGIN|import)/ } keys %{ $class. '::' };
}

Then use Lots::Of::Modules elsewhere;

use Lots::Of::Modules;
confess 'OH NOES';

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...