X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSafe%2FIsa.pm;h=47cfd3e9e3d29aa61570732e13ca9c04807e3ee8;hb=b19500dfa77d52b512241b8a75693636241c4c14;hp=ebadc37a6630dc2e4f9147b5b8eb2d7b5a26811e;hpb=7b1885ee681c978c03d4e23ef2e41728712ce1ee;p=p5sagit%2FSafe-Isa.git diff --git a/lib/Safe/Isa.pm b/lib/Safe/Isa.pm index ebadc37..47cfd3e 100644 --- a/lib/Safe/Isa.pm +++ b/lib/Safe/Isa.pm @@ -5,12 +5,15 @@ use warnings FATAL => 'all'; use Scalar::Util qw(blessed); use Exporter 5.57 qw(import); -our $VERSION = '1.000003'; +our $VERSION = '1.000005'; our @EXPORT = qw($_call_if_object $_isa $_can $_does $_DOES); our $_call_if_object = sub { my ($obj, $method) = (shift, shift); + # This is intentionally a truth test, not a defined test, otherwise + # we gratuitously break modules like Scalar::Defer, which would be + # un-perlish. return unless blessed($obj); return $obj->$method(@_); }; @@ -20,6 +23,11 @@ our ($_isa, $_can, $_does, $_DOES) = map { sub { my $obj = shift; $obj->$_call_if_object($method => @_) } } qw(isa can does DOES); +1; +__END__ + +=pod + =head1 NAME Safe::Isa - Call isa, can, does and DOES safely on things that may not be objects @@ -106,7 +114,7 @@ is equivalent to Note that we don't handle trying class names, because many things are valid class names that you might not want to treat as one (like say "Matt") - the C function from L is a good way to check for -somthing you might be able to call methods on if you want to do that. +something you might be able to call methods on if you want to do that. =head1 EXPORTS @@ -145,6 +153,11 @@ returns nothing. If called on an object, calls C on it and returns the result, otherwise returns nothing. +=head1 SEE ALSO + +I gave a lightning talk on this module (and L and L) at +L. + =head1 AUTHOR mst - Matt S. Trout (cpan:MSTROUT)