Since you're asking about methods and not plain subs, i.e. inheritance plays a role, I believe what you are looking for is UNIVERSAL's can.

{    package Foo;
    sub foo {}
}
{    package Bar;
    use parent -norequire, 'Foo';
    sub bar {};
}

print Foo->can('foo')//'undef', "\n";
print Foo->can('bar')//'undef', "\n";
print Bar->can('foo')//'undef', "\n";
print Bar->can('bar')//'undef', "\n";

__END__

CODE(0x1343fa8)
undef
CODE(0x1343fa8)
CODE(0x1343b68)

[download]

Update: If you don't want to take inheritance into account and just want to know if a certain subroutine has been defined in a specific package, you can use defined(&Package::subroutine).

In reply to Re: How to determine if a sub is defined in a package, without calling it? by haukex
in thread How to determine if a sub is defined in a package, without calling it? by lamber45

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