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.\" ========================================================================
.\"
.IX Title "Export 3pm"
.TH Export 3pm "2008-03-12" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
Perl6::Export \- Implements the Perl 6 'is export(...)' trait
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&        # Perl 5 code...
.Ve
.PP
.Vb 2
\&        package Some::Module;
\&    use Perl6::Export;
.Ve
.PP
.Vb 2
\&        # Export &foo by default, when explicitly requested,
\&        # or when the \(aq:ALL\(aq export set is requested...
.Ve
.PP
.Vb 3
\&        sub foo is export(:DEFAULT) {
\&                print "phooo!";
\&        }
.Ve
.PP
.Vb 3
\&        # Export &var by default, when explicitly requested,
\&        # or when the \(aq:bees\(aq, \(aq:pubs\(aq, or \(aq:ALL\(aq export set is requested...
\&        # the parens after \(aqis export\(aq are like the parens of a qw(...)
.Ve
.PP
.Vb 3
\&        sub bar is export(:DEFAULT :bees :pubs) {
\&                print "baaa!";
\&        }
.Ve
.PP
.Vb 2
\&        # Export &baz when explicitly requested
\&        # or when the \(aq:bees\(aq or \(aq:ALL\(aq export set is requested...
.Ve
.PP
.Vb 3
\&        sub baz is export(:bees) {
\&                print "baassss!";
\&        }
.Ve
.PP
.Vb 2
\&        # Always export &qux 
\&        # (no matter what else is explicitly or implicitly requested)
.Ve
.PP
.Vb 3
\&        sub qux is export(:MANDATORY) {
\&                print "quuuuuuuuux!";
\&        }
.Ve
.PP
.Vb 5
\&        sub import {
\&                # This subroutine is called when the module is used (as usual),
\&                # but it is called after any export requests have been handled.
\&                # Those requests will have been stripped from its argument list
\&        }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Implements what I hope the Perl 6 symbol export mechanism might look like.
.PP
It's very straightforward:
.IP "\(bu" 4
If you want a subroutine to be capable of being exported (when
explicitly requested in the \f(CW\*(C`use\*(C'\fR arguments), you mark it
with the \f(CW\*(C`is export\*(C'\fR trait.
.IP "\(bu" 4
If you want a subroutine to be automatically exported when the module is
used (without specific overriding arguments), you mark it with
the \f(CW\*(C`is export(:DEFAULT)\*(C'\fR trait.
.IP "\(bu" 4
If you want a subroutine to be automatically exported when the module is
used (even if the user specifies overriding arguments), you mark it with
the \f(CW\*(C`is export(:MANDATORY)\*(C'\fR trait.
.IP "\(bu" 4
If the subroutine should also be exported when particular export groups
are requested, you add the names of those export groups to the trait's
argument list.
.PP
That's it.
.SH "WARNING"
.IX Header "WARNING"
The syntax and semantics of Perl 6 is still being finalized
and consequently is at any time subject to change. That means the
same caveat applies to this module.
.SH "DEPENDENCIES"
.IX Header "DEPENDENCIES"
Requires Filter::Simple
.SH "AUTHOR"
.IX Header "AUTHOR"
Damian Conway (damian@conway.org)
.SH "BUGS AND IRRITATIONS"
.IX Header "BUGS AND IRRITATIONS"
Does not yet handle the export of variables.
.PP
Comments, suggestions, and patches welcome.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
.Vb 3
\& Copyright (c) 2003, Damian Conway. All Rights Reserved.
\& This module is free software. It may be used, redistributed
\&    and/or modified under the same terms as Perl itself.
.Ve