| Kavorka::Manual::PrototypeAndAttributes(3pm) | User Contributed Perl Documentation | Kavorka::Manual::PrototypeAndAttributes(3pm) |
Kavorka::Manual::PrototypeAndAttributes - the more rarely used features of Perl subroutines
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.
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.
Please report any bugs to <http://rt.cpan.org/Dist/Display.html?Queue=Kavorka>.
Kavorka::Manual.
Toby Inkster <tobyink@cpan.org>.
This software is copyright (c) 2013-2014, 2017 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
| 2019-01-17 | perl v5.28.1 |