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XS (Perl)
open-in-new
<p>XS is a <a href="/facts/Perl/fx31kjlT">Perl</a> <a href="/facts/Foreign_function_interface/ntAxkhK0">foreign function interface</a> through which a program can call a <a href="/facts/C_/Ky2No763">C</a> or <a href="/facts/C%2B%2B/Et0F2qn9">C++</a> <a href="/facts/Subroutine/9vFJrg0A">subroutine</a>. XS or xsub is an <a href="/facts/Abbreviation/VxBQfhII">abbreviation</a> of "eXtendable Subroutine". </p><p>XS also refers to a <a href="/facts/Glue_language/8pF4ajBL">glue language</a> for specifying calling interfaces supporting such interfaces (see below). </p>