Multiple Dispatch - language feature

Example from Julia:

collide_with(x::Asteroid, y::Asteroid) = ... # deal with asteroid hitting asteroid
collide_with(x::Asteroid, y::Spaceship) = ... # deal with asteroid hitting spaceship
collide_with(x::Spaceship, y::Asteroid) = ... # deal with spaceship hitting asteroid
collide_with(x::Spaceship, y::Spaceship) = ... # deal with spaceship hitting spaceship

Example from Common Lisp:

 (defmethod collide-with ((x asteroid) (y asteroid))
  ;; deal with asteroid hitting asteroid
  )
(defmethod collide-with ((x asteroid) (y spaceship))
  ;; deal with asteroid hitting spaceship
  )
(defmethod collide-with ((x spaceship) (y asteroid))
  ;; deal with spaceship hitting asteroid
  )
(defmethod collide-with ((x spaceship) (y spaceship))
  ;; deal with spaceship hitting spaceship
  )

Languages with Multiple Dispatch include Julia, Smalltalk, Common Lisp, Dylan

Languages without Multiple Dispatch include JavaScript, TypeScript, Elixir, Speedie

This question asks: Does the language support multiple dispatch?

Read more about Multiple Dispatch on the web: 1.

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