I want to create a new instance of a deftype from inside one of its
methods. A basic example would be
(defprotocol Foo
(foo [x]))
(deftype Bar
[i]
Foo
(foo [] (Bar (inc i))))
(foo (Bar 0))
This fails with an exception:
java.lang.ClassCastException: java.lang.Class cannot be cast to
clojure.lang.IFn (NO_SOURCE_FILE:0)
Apparently the value of Bar inside the method definition is not yet
the value that it will have after the deftype is completed. The
following workaround works but is not very elegant:
(declare new-Bar)
(deftype Bar
[i]
Foo
(foo [] (new-Bar (inc i))))
(def new-Bar Bar)
(foo (Bar 0))
Does anyone have a better idea?
Konrad.
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