Lvalue(e)      User Contributed Perl Documentation      Lvalue(e)



NAME
       PDL::Lvalue - declare PDL lvalue subs

DESCRIPTION
       Declares a subset of PDL functions so that they can be
       used as lvalue subs. In particular, this allows simpler
       constructs such as

         $a->slice(',(0)') .= 1;

       instead of the clumsy

         (my $tmp = $a->slice(',(0)')) .= 1;

       This will only work if your perl supports lvalue subrou-
       tines (i.e. versions  >= v5.6.0). Note that lvalue subrou-
       tines are currently regarded experimental.

SYNOPSIS
        use PDL::Lvalue; # automatically done with all PDL loaders


FUNCTIONS
       subs

       test if routine is a known PDL lvalue sub

         print "slice is an lvalue sub" if PDL::Lvalue->subs('slice');

       returns the list of PDL lvalue subs if no routine name is
       given, e.g.

         @lvfuncs = PDL::Lvalue->subs;

       It can be used in scalar context to find out if your PDL
       has lvalue subs:

         print 'has lvalue subs' if PDL::Lvalue->subs;


AUTHOR
       Copyright (C) 2001 Christian Soeller (c.soeller@auck-
       land.ac.nz). All rights reserved. There is no warranty.
       You are allowed to redistribute this software / documenta-
       tion under certain conditions. For details, see the file
       COPYING in the PDL distribution. If this file is separated
       from the PDL distribution, the copyright notice should be
       included in the file.



perl v5.6.1                 2001-09-22                  Lvalue(e)