CODEWITHSUNDEEP
scala
Nermin Serifovic
Nermin Serifovic

Reputation: 1337

Scala's blend of functional with object-oriented

If you were trying to explain someone how nicely Scala blends functional and object-oriented techniques, which example would you use?

Upvotes: 6

Views: 362

Answers (3)

Alex Cruise
Alex Cruise

Reputation: 7979

Martin has pointed to PartialFunction as a signal example of the kind of thing that the OO/FP synthesis uniquely enables. Specifically, you can treat it as a function and just call it, running the risk of an exception, or you can ask it first whether it's likely to throw given some argument. The former is a natural consequence of first-class functions, and you'd expect to see it in any self-styled functional language; the latter is arguably something special.

Upvotes: 1

Dean Wampler
Dean Wampler

Reputation: 2151

In my canned Seductions of Scala talk, I end with an Actor example that uses functional-style pattern matching for determining the "kind" of message received and object-oriented-style polymorphic dispatch for one of the message "kinds" (a geometric shape to draw). It starts around slide 76.

Upvotes: 4

Kevin Wright
Kevin Wright

Reputation: 49705

The actor API is a great example of how the strengths of both approaches are used together. You can also look at the implementation of Map, and the way that it subclasses Function1

Upvotes: 1

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