List::Util::XS(3) Perl Programmers Reference Guide List::Util::XS(3) NAME List::Util::XS - Indicate if List::Util was compiled with a C compiler SYNOPSIS use List::Util::XS 1.20; DESCRIPTION "List::Util::XS" can be used as a dependency to ensure List::Util was in- stalled using a C compiler and that the XS version is installed. During installation $List::Util::XS::VERSION will be set to "undef" if the XS was not compiled. Starting with release 1.23_03, Scalar-List-Util is always using the XS im- plementation, but for backwards compatibility, we still ship the "List::Util::XS" module which just loads "List::Util". SEE ALSO Scalar::Util, List::Util, List::MoreUtils COPYRIGHT Copyright (c) 2008 Graham Barr . All rights reserved. This program is free software; you can redistribute it and/or modify it un- der the same terms as Perl itself. perl v5.44.0 2026-06-22 List::Util::XS(3)