NAME namespace - Perl pragma to use like C++ namespace aliasing SYNOPSIS use namespace File => IO::File; my $fh = new File "foo", O_CREAT|O_WRONLY; if( defined $fh ) { print $fh "bar\n"; $fh->close; } DESCRIPTION Allow aliasing namespace. May be useful for reusability increase. use namespace ALIAS => PACKAGE [, qw/IMPORT_LIST [ ::SUBPACKAGE [ IMPORT_LIST ]] /]; ALIAS and PACKAGE is required parameters; IMPORT_LIST is the usual list of import. Also may be undefined namespace and they subnamespaces: no namespace ALIAS; If ALIAS begin with '::', then alias will be expandet to caller namespace. If following example of pragma namespace called from main:: module, then alias will be expandet to main::ALIAS::. use namespace ::ALIAS => PACKAGE EXAMPLES EXAMPLE 1 use namespace DOM => XML::DOM, qw/$VERSION ::Document $VERSION/; # DOM is alias for XML::DOM # $VERSION from XML::DOM will be imported to DOM # # ::Document subpackage of XML::DOM will be aliased to DOM::Document # $VERSION from XML::DOM::Document will be imported to DOM::Document my $doc = new DOM::Document; print "Current used DOM version is $DOM::VERSION \n"; no namespace DOM; # namespace DOM and all subnamespaces will be destroyed EXAMPLE 2 use namespace DOM => XML::DOM, qw/::Document/; # or # use namespace DOM => XML::Sablotron::DOM, qw/:constants ::Document/; my $doc = new DOM::Document; print "Constant 'TEXT_NODE' = ", TEXT_NODE; AUTHOR Albert MICHEEV