The Prototype¶

Like with the sub keyword, a prototype may be provided for functions. Method dispatch ignores this, so it's only likely to be useful for "fun", and even then, rarely.

Like Function::Parameters, Kavorka uses ":(...)" to indicate a prototype. This avoids ambiguity between signatures, prototypes and attributes.

For compatibility with Perl 5.20, the special attribute ":prototype(...)" is supported as an alternative mechanism for expressing prototypes.

The Attributes¶

Attributes are parsed as per "Subroutine Attributes" in perlsub.

For anonymous functions, some attributes (e.g. ":lvalue") may be applied too late to take effect. Attributes should mostly work for named functions though.