```{index} single: List::Util::XS ``` # List::Util::XS Require List::Util's compiled implementation ## SYNOPSIS ```perl use List::Util::XS 1.20; ``` ## DESCRIPTION `use List::Util::XS 1.20;` is a dependency check: it fails unless List::Util runs its compiled implementation rather than a pure-Perl fallback. Under pperl List::Util is native, so the check always holds, and `$List::Util::XS::VERSION` is List::Util's version. ## SEE ALSO [Scalar::Util](../../Scalar/Util.md), [List::Util](../Util.md), [List::MoreUtils](https://metacpan.org/pod/List::MoreUtils) ## COPYRIGHT Copyright (c) 2008 Graham Barr . All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.