There's More Than One Way To Dispatch It
There's More Than One Way To Dispatch It
Av Jonathan Worthington (jnthn)
Dato: fredag 17 april 2009 13.30
Varighet: 45 minutter
Målgruppe: Videregående
Språk: English
Tagger: 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.
Deltok: Dag Lem (dlem), Carl Mäsak (masak), Martin Kjeldsen (baest), Max Muzi (Maxim), Florian Ragwitz (rafl), Erik Johansen (uniejo), jani, Salve J. Nilsen (sjn), Marcel Grünauer (Marcel), geira, Jeremiah Foster (jeremiah), Leif Egil Olsen, Frank Mortensen (FAM), Stefan Hornburg (Racke), Andreas Parslow, Gabor Szabo (szabgab), Patrick Michaud (Pm), Edoardo Sabadelli (viking-3), Håkon Karlsen (haakonsk), Tore Haugland, Jonathan Worthington (jnthn), km,