Nice, I have been looking for something like this to experiment with.
Suggestions on syntax: It would be much nicer to use and more idiomatic if
the method name came first, e.g.
(method some-object arg1 arg2)
This would bring many benefits: you could use the standard "->" syntax, you
can "apply" a method, it will fit much better when composed with Clojure
library functions etc. You could also potentially use any associative data
structure as your object type. You could also potentially have special
handling for null object values, default implementations in case of missing
methods etc.
This suggests to me that it would be a better design if each method was
defined as a function that looked up the specific implementation in the
prototype object and called it. You could use a macro to declare the
function, and possibly even a default value, e.g.
(def mymethod
(prototype-fn [obj arg1 arg2]
:default (do-something-with arg1 arg2)))
When would expand into something like:
(defn mymethod [obj arg1 arg2]
(if-let [method (:$mymethod obj)]
(method obj arg1 arg2)
(do-something-with arg1 arg2)))
Obviously, this means that you need to explicitly declare prototype
methods. But I think this is a good idea anyway: it ensures a bit more
discipline and testability (which is often the biggest problem in
prototype-based systems.....)
On Monday, 11 February 2013 04:21:58 UTC+8, eduardoejp wrote:
>
> Just a simple toy project I made moments ago...
> https://github.com/eduardoejp/jormungandr
>
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