perl-safe-isa Perl - Safe::Isa 3.6.0 2026-01-31 eisfair-noarch the eisfair team, team(at)eisfair(dot)org stable
perl
perl 3.6.0 Internal Program Version: Safe::Isa 1.000010.5.42.0 Since perl allows us to provide a subroutine reference or a method name to the operator when used as a method call, and a subroutine does not require the invocant to actually be an object, we can create safe versions of isa, can and friends by using a subroutine reference that only tries to call the method if it is used on an object http://search.cpan.org/dist/Safe-Isa