Provided by: perl-doc_5.30.0-9build1_all bug

NAME

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

SYNOPSIS

         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]'

DESCRIPTION

       "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.

   Difference between "load" and "autoload"
       "Module::Load" imports the two functions - "load" and "autoload"

       "autoload" imports the default functions automatically, but "load" do not import any
       functions.

       "autoload" is usable under "BEGIN{};".

       Both the functions can import the functions that are specified.

       Following codes are same.

         load File::Spec::Functions, qw/splitpath/;

         autoload File::Spec::Functions, qw/splitpath/;

FUNCTIONS

       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'.

Rules

       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.

IMPORTS THE FUNCTIONS

       '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 don't 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;

Caveats

       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)

SEE ALSO

       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".

ACKNOWLEDGEMENTS

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

BUG REPORTS

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

AUTHOR

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

COPYRIGHT

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