CODEWITHSUNDEEP
scalafunctional-programming
ttt
ttt

Reputation: 4004

Scala function literals vs normal private method

As Scala provides a way to write function literals, which one is quite recommended?

For example I want to a flatMap or map on some object, I need to pass a function from f: A => B or similar.

For this function, we can use both function literals and a private normal method(Java way) in the class?

Upvotes: 0

Views: 130

Answers (1)

Felix
Felix

Reputation: 8495

Function literals are instances of the different function traits, and as such they have some methods defined on them (andThen, compose, apply, toString): Function1

Partial functions have even more methods: PartialFunction

In many cases, the compiler allows you to put methods in places that expect function literals, so more often than not there is no difference. Partially applying a method (e.g. myMethod _) even converts it to a function literal, so that's even less of a reason to think too much about this.

In the end, you should use function-literals whenever you need to treat functionality as data, and I don't see any reason why you would use them otherwise.

Upvotes: 1

Related Questions