Filter::signatures - very simplistic signatures for Perl < 5.20 DESCRIPTION This module implements a backwards compatibility shim for formal Perl subroutine signatures that were introduced to the Perl core with Perl 5.20. INSTALLATION This is a Perl module distribution. It should be installed with whichever tool you use to manage your installation of Perl, e.g. any of cpanm . cpan . cpanp -i . Consult https://www.cpan.org/modules/INSTALL.html for further instruction. Should you wish to install this module manually, the procedure is perl Makefile.PL make make test make install REPOSITORY The public repository of this module is L. SUPPORT The public support forum of this module is L. BUG TRACKER Please report bugs in this module via the RT CPAN bug queue at L or via mail to L. SEE ALSO L L, which transforms your source code directly between the different notations without employing a source filter L - a module that doesn't use a source filter but optree modification instead L - uses signatures to dispatch to different subroutines based on which subroutine matches the signature L - this module implements subroutine signatures closer to Perl 6, but requires L and L L - adds two new keywords for declaring subroutines and parses their signatures. It supports more features than core Perl, closer to Perl 6, but requires a C compiler and Perl 5.14+. AUTHOR Max Maischein C LICENSE This module is released under the same terms as Perl itself. COPYRIGHT (c) Copyright 2015-2020 by Max Maischein C.