There's More Than One Way To Dispatch It

By Jonathan Worthington (‎jnthn‎) from Bratislava.pm
Date: Saturday, 7 March 2009 14:50
Duration: 40 minutes
Target audience: Intermediate
Language: English
Tags: 6 multidispatch perl

Multiple dispatch allows you to write many subroutines or methods with the same name, but taking a different number of or different types of parameters. In this talk I will look at multiple dispatch in Perl 6, including:

* How to write multi dispatch subs
* Arity based dispatch
* Basic type-based dispatch
* Candidate sorting - how the winner is chosen in a more complex type hierarchy
* Using subset types to do multiple dispatch on values
* Handling ambiguity: the 'is default' trait and using a proto as a fallback
* The .?, .+ and .* operators

All illustrated with example code, which runs today in Rakudo.

• Alex Kapranoff (‎kappa‎)
• Ivan Serezhkin (‎Vany‎)
• Олег Алистратов (‎ali‎)
• Alexander Morgun
• Denis Sokolovsky
• Dmitry Zhariy
• Агнислав Онуфрийчук (‎agnislav‎)
• Marina Koretskaya
• Gleb Vinnikov
• Andrey Kosachenko (‎silent‎)
• Евгений Батовский (‎baton‎)
• Олександр Гергардт
• Сергій Лозовий
• Олександр Голубович