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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Module::Load \- runtime require of both modules and files .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& use Module::Load; \& \& my $module = \*(AqData::Dumper\*(Aq; \& \& load Data::Dumper; # loads that module, but not import any functions \& # \-> cannot use \*(AqDumper\*(Aq function \& \& load \*(AqData::Dumper\*(Aq; # ditto \& load $module # tritto \& \& autoload Data::Dumper; # loads that module and imports the default functions \& # \-> can use \*(AqDumper\*(Aq function \& \& my $script = \*(Aqsome/script.pl\*(Aq \& load $script; \& load \*(Aqsome/script.pl\*(Aq; # use quotes because of punctuations \& \& load thing; # try \*(Aqthing\*(Aq first, then \*(Aqthing.pm\*(Aq \& \& load CGI, \*(Aq:all\*(Aq; # like \*(Aquse CGI qw[:standard]\*(Aq .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\f(CW\*(C`Module::Load\*(C'\fR eliminates the need to know whether you are trying to require either a file or a module. .PP If you consult \f(CW\*(C`perldoc \-f require\*(C'\fR you will see that \f(CW\*(C`require\*(C'\fR will behave differently when given a bareword or a string. .PP In the case of a string, \f(CW\*(C`require\*(C'\fR assumes you are wanting to load a file. But in the case of a bareword, it assumes you mean a module. .PP This gives nasty overhead when you are trying to dynamically require modules at runtime, since you will need to change the module notation (\f(CW\*(C`Acme::Comment\*(C'\fR) to a file notation fitting the particular platform you are on. .PP \&\f(CW\*(C`Module::Load\*(C'\fR eliminates the need for this overhead and will just \s-1DWYM.\s0 .ie n .SS "Difference between ""load"" and ""autoload""" .el .SS "Difference between \f(CWload\fP and \f(CWautoload\fP" .IX Subsection "Difference between load and autoload" \&\f(CW\*(C`Module::Load\*(C'\fR imports the two functions \- \f(CW\*(C`load\*(C'\fR and \f(CW\*(C`autoload\*(C'\fR .PP \&\f(CW\*(C`autoload\*(C'\fR imports the default functions automatically, but \f(CW\*(C`load\*(C'\fR do not import any functions. .PP \&\f(CW\*(C`autoload\*(C'\fR is usable under \f(CW\*(C`BEGIN{};\*(C'\fR. .PP Both the functions can import the functions that are specified. .PP Following codes are same. .PP .Vb 1 \& load File::Spec::Functions, qw/splitpath/; \& \& autoload File::Spec::Functions, qw/splitpath/; .Ve .SH "FUNCTIONS" .IX Header "FUNCTIONS" .IP "load" 4 .IX Item "load" Loads a specified module. .Sp See \*(L"Rules\*(R" for detailed loading rule. .IP "autoload" 4 .IX Item "autoload" Loads a specified module and imports the default functions. .Sp Except importing the functions, 'autoload' is same as 'load'. .IP "load_remote" 4 .IX Item "load_remote" Loads a specified module to the specified package. .Sp .Vb 1 \& use Module::Load \*(Aqload_remote\*(Aq; \& \& my $pkg = \*(AqOther::Package\*(Aq; \& \& load_remote $pkg, \*(AqData::Dumper\*(Aq; # load a module to \*(AqOther::Package\*(Aq \& # but do not import \*(AqDumper\*(Aq function .Ve .Sp A module for loading must be quoted. .Sp Except specifing the package and quoting module name, \&'load_remote' is same as 'load'. .IP "autoload_remote" 4 .IX Item "autoload_remote" Loads a specified module and imports the default functions to the specified package. .Sp .Vb 1 \& use Module::Load \*(Aqautoload_remote\*(Aq; \& \& my $pkg = \*(AqOther::Package\*(Aq; \& \& autoload_remote $pkg, \*(AqData::Dumper\*(Aq; # load a module to \*(AqOther::Package\*(Aq \& # and imports \*(AqDumper\*(Aq function .Ve .Sp A module for loading must be quoted. .Sp Except specifing the package and quoting module name, \&'autoload_remote' is same as 'load_remote'. .SH "Rules" .IX Header "Rules" All functions have the following rules to decide what it thinks you want: .IP "\(bu" 4 If the argument has any characters in it other than those matching \&\f(CW\*(C`\ew\*(C'\fR, \f(CW\*(C`:\*(C'\fR or \f(CW\*(C`\*(Aq\*(C'\fR, it must be a file .IP "\(bu" 4 If the argument matches only \f(CW\*(C`[\ew:\*(Aq]\*(C'\fR, it must be a module .IP "\(bu" 4 If the argument matches only \f(CW\*(C`\ew\*(C'\fR, it could either be a module or a file. We will try to find \f(CW\*(C`file.pm\*(C'\fR first in \f(CW@INC\fR and if that fails, we will try to find \f(CW\*(C`file\*(C'\fR in \f(CW@INC\fR. If both fail, we die with the respective error messages. .SH "IMPORTS THE FUNCTIONS" .IX Header "IMPORTS THE FUNCTIONS" \&'load' and 'autoload' are imported by default, but 'load_remote' and \&'autoload_remote' are not imported. .PP To use 'load_remote' or 'autoload_remote', specify at 'use'. .ie n .IP """load"",""autoload"",""load_remote"",""autoload_remote""" 4 .el .IP "``load'',``autoload'',``load_remote'',``autoload_remote''" 4 .IX Item "load,autoload,load_remote,autoload_remote" Imports the selected functions. .Sp .Vb 2 \& # imports \*(Aqload\*(Aq and \*(Aqautoload\*(Aq (default) \& use Module::Load; \& \& # imports \*(Aqautoload\*(Aq only \& use Module::Load \*(Aqautoload\*(Aq; \& \& # imports \*(Aqautoload\*(Aq and \*(Aqautoload_remote\*(Aq, but don\*(Aqt import \*(Aqload\*(Aq; \& use Module::Load qw/autoload autoload_remote/; .Ve .IP "'all'" 4 .IX Item "'all'" Imports all the functions. .Sp .Vb 1 \& use Module::Load \*(Aqall\*(Aq; # imports load, autoload, load_remote, autoload_remote .Ve .IP "'','none',undef" 4 .IX Item "'','none',undef" Not import any functions (\f(CW\*(C`load\*(C'\fR and \f(CW\*(C`autoload\*(C'\fR are not imported). .Sp .Vb 1 \& use Module::Load \*(Aq\*(Aq; \& \& use Module::Load \*(Aqnone\*(Aq; \& \& use Module::Load undef; .Ve .SH "Caveats" .IX Header "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 \f(CW\*(C`/\*(C'\fR, like on Unix rather than the Win32 \f(CW\*(C`\e\*(C'\fR. Otherwise perl will not read its own \f(CW%INC\fR accurately double load files if they are required again, or in the worst case, core dump. .PP \&\f(CW\*(C`Module::Load\*(C'\fR 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' \&\f(CW@EXPORT\fR) .SH "SEE ALSO" .IX Header "SEE ALSO" Module::Runtime provides functions for loading modules, checking the validity of a module name, converting a module name to partial \f(CW\*(C`.pm\*(C'\fR path, and related utility functions. .PP \&\*(L"require\*(R" in perlfunc <https://metacpan.org/pod/perlfunc#require> and \&\*(L"use\*(R" in perlfunc <https://metacpan.org/pod/perlfunc#use>. .PP Mojo::Loader is a \*(L"class loader and plugin framework\*(R", and is included in the Mojolicious <https://metacpan.org/release/Mojolicious> distribution. .PP Module::Loader is a module for finding and loading modules in a given namespace, inspired by \f(CW\*(C`Mojo::Loader\*(C'\fR. .SH "ACKNOWLEDGEMENTS" .IX Header "ACKNOWLEDGEMENTS" Thanks to Jonas B. Nielsen for making explicit imports work. .SH "BUG REPORTS" .IX Header "BUG REPORTS" Please report bugs or other issues to <bug\-module\-load@rt.cpan.org<gt>. .SH "AUTHOR" .IX Header "AUTHOR" This module by Jos Boumans <kane@cpan.org>. .SH "COPYRIGHT" .IX Header "COPYRIGHT" This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.
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