for what its worth, I'm building a highly polymorphic board-game engine
[1] and I've stayed away from multimethods...I've used every single
polymorphism capabillity that clojure provides (records/protocols,
map-based, HOFs etc) except multi-methods. Performance is acritical
matter for this project especially for chess...
Using my lib I've got a purely functional chess, checkers and
tic-tac-toe implementations so feel free to check it out...
Jim
[1] https://github.com/jimpil/Clondie24
On 19/11/12 15:32, Thomas Goossens wrote:
Yes indeed. with multimethods you can doue multi-argument dispatch.
But that means that for every possible collision. I have to specify a
method?
Would it be a good idea to introduce taxonomies here?
On Monday, November 19, 2012 4:02:18 PM UTC+1, Stuart Sierra wrote:
A long time ago I posted some macros to do double-dispatch with
protocols and records. The link was http://paste.lisp.org/+2023
but it no longer works.
The basic idea is you dispatch on the first argument to an
intermediate type that then dispatches on the second argument.
It's complicated, but essentially mechanical.
Clojure multimethods have built-in multi-argument dispatch.
-S
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