April 2012
Intermediate to advanced
296 pages
7h 3m
English
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Chapter 8Multimethods
Clojure multimethods provide a flexible way to associate a function with a set of inputs. This is similar to Java polymorphism but more general. When you call a Java method, Java selects a specific implementation to execute by examining the type of a single object. When you call a Clojure multimethod, Clojure selects a specific implementation to execute by examining the result of any function you choose, applied to all the function’s arguments.
In this chapter, you will develop a thirst for multimethods by first living without them. Then you will build an increasingly complex series of multimethod implementations, first using multimethods to simulate polymorphism and then using multimethods to implement various ad hoc ...
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