Manpages - Module_Load.3perl

Module::Load - runtime require of both modules and files

use Module::Load; my $module = Data::Dumper; load Data::Dumper; # loads that module, but not import any functions # -> cannot use Dumper function load Data::Dumper; # ditto load $module # tritto autoload Data::Dumper; # loads that module and imports the default functions # -> can use Dumper function my $script = some/script.pl load $script; load some/script.pl; # use quotes because of punctuations load thing; # try thing first, then thing.pm load CGI, :all; # like use CGI qw[:standard]

Module::Load eliminates the need to know whether you are trying to require either a file or a module.

If you consult perldoc -f require you will see that require will behave differently when given a bareword or a string.

In the case of a string, require assumes you are wanting to load a file. But in the case of a bareword, it assumes you mean a module.

This gives nasty overhead when you are trying to dynamically require modules at runtime, since you will need to change the module notation (Acme::Comment) to a file notation fitting the particular platform you are on.

Module::Load eliminates the need for this overhead and will just DWYM.

load

Loads a specified module. See Rules for detailed loading rule.

autoload

Loads a specified module and imports the default functions. Except importing the functions, ’autoload’ is same as ’load’.

load_remote

Loads a specified module to the specified package. use Module::Load load_remote; my $pkg = Other::Package; load_remote $pkg, Data::Dumper; # load a module to Other::Package # but do not import Dumper function A module for loading must be quoted. Except specifing the package and quoting module name, ’load_remote’ is same as ’load’.

autoload_remote

Loads a specified module and imports the default functions to the specified package. use Module::Load autoload_remote; my $pkg = Other::Package; autoload_remote $pkg, Data::Dumper; # load a module to Other::Package # and imports Dumper function A module for loading must be quoted. Except specifing the package and quoting module name, ’autoload_remote’ is same as ’load_remote’.

All functions have the following rules to decide what it thinks you want:

• If the argument has any characters in it other than those matching \w, : or , it must be a file
• If the argument matches only [\w:], it must be a module
• If the argument matches only \w, it could either be a module or a file. We will try to find file.pm first in @INC and if that fails, we will try to find file in @INC. If both fail, we die with the respective error messages.

’load’ and ’autoload’ are imported by default, but ’load_remote’ and ’autoload_remote’ are not imported.

To use ’load_remote’ or ’autoload_remote’, specify at ’use’.

“load”,“autoload”,“load_remote”,“autoload_remote”

Imports the selected functions. # imports load and autoload (default) use Module::Load; # imports autoload only use Module::Load autoload; # imports autoload and autoload_remote, but dont import load; use Module::Load qw/autoload autoload_remote/;

’all’

Imports all the functions. use Module::Load all; # imports load, autoload, load_remote, autoload_remote

’’,’none’,undef

Not import any functions (load and autoload are not imported). use Module::Load ; use Module::Load none; use Module::Load undef;

Because of a bug in perl (#19213), at least in version 5.6.1, we have to hardcode the path separator for a require on Win32 to be /, like on Unix rather than the Win32 \. Otherwise perl will not read its own %INC accurately double load files if they are required again, or in the worst case, core dump.

Module::Load cannot do implicit imports, only explicit imports. (in other words, you always have to specify explicitly what you wish to import from a module, even if the functions are in that modules’ @EXPORT)

Module::Runtime provides functions for loading modules, checking the validity of a module name, converting a module name to partial .pm path, and related utility functions.

require in perlfunc https://metacpan.org/pod/perlfunc#require and use in perlfunc https://metacpan.org/pod/perlfunc#use.

Mojo::Loader is a class loader and plugin framework, and is included in the Mojolicious https://metacpan.org/release/Mojolicious distribution.

Module::Loader is a module for finding and loading modules in a given namespace, inspired by Mojo::Loader.

Thanks to Jonas B. Nielsen for making explicit imports work.

Please report bugs or other issues to <bug-module-load@rt.cpan.org>.

This module by Jos Boumans <kane@cpan.org>.

This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.