I'm used to polymorphism in OO systems where everything in driven from
inheritance hierarchy. Clojures defmulti style polymorphism seems powerful
but has left me wondering how to most effectively use it. I'm looking for
some good real world examples of how people have used polymorphism in
On 02.06.2009, at 12:01, Glen Stampoultzis wrote:
I'm used to polymorphism in OO systems where everything in driven
from inheritance hierarchy. Clojures defmulti style polymorphism
seems powerful but has left me wondering how to most effectively
use it. I'm looking for some good real
Hi Glen,
(1) Real-world example: I use polymorphism on the types of two
different arguments to define implicit conversions:
(defmulti coerce
(fn [dest-class src-inst] [dest-class (class src-inst)]))
(defmethod coerce [java.io.File String] [_ str]
(java.io.File. str))
(defmethod
Some work in which I'm currently engaged uses ad hoc hierarchies for
dispatching on a handler and either a message method or a method and
response code. In the realm of HTTP clients -- imagine that the
response arrives as a method invocation -- the equivalent would be
writing something like
Some good examples from everyone. Thank you.
2009/6/3 Richard Newman holyg...@gmail.com
Some work in which I'm currently engaged uses ad hoc hierarchies for
dispatching on a handler and either a message method or a method and
response code. In the realm of HTTP clients -- imagine that the
Actually considering I'm currently writing a game in clojure that contains a
lot of state this _is_ a good real world example for me. Thanks very much
Laurent.
2009/6/3 Laurent PETIT laurent.pe...@gmail.com
Hi,
Here is an example of the implementation of the Visitor design
pattern in
