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extend-type (clj)

(source)

macro

(extend-type t & specs)
A macro that expands into an extend call. Useful when you are supplying the definitions explicitly inline, extend-type automatically creates the maps required by extend. Propagates the class as a type hint on the first argument of all fns. (extend-type MyType Countable (cnt [c] ...) Foo (bar [x y] ...) (baz ([x] ...) ([x y & zs] ...))) expands into: (extend MyType Countable {:cnt (fn [c] ...)} Foo {:baz (fn ([x] ...) ([x y & zs] ...)) :bar (fn [x y] ...)})

Examples