multidimensional(3) User Contributed Perl Documentation multidimensional(3)

multidimensional - disables multidimensional array emulation

version 0.014

    no multidimensional;
    $hash{1, 2};                # dies
    $hash{join($;, 1, 2)};      # doesn't die

Perl's multidimensional array emulation stems from the days before the language had references, but these days it mostly serves to bite you when you typo a hash slice by using the "$" sigil instead of "@".

This module lexically makes using multidimensional array emulation a fatal error at compile time.

Disables multidimensional array emulation for the remainder of the scope being compiled.

Enables multidimensional array emulation for the remainder of the scope being compiled;

"$;" in perlvar, B::Hooks::OP::Check.

Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>

This software is copyright (c) 2010 - 2016 by Dagfinn Ilmari Mannsåker.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

2018-04-26 perl v5.34.0