Scala: Can I write my function like a method of type?

Question

Is it possible to write postfix function that I can use like that:

//... val myStr: String = "some string" val myNewStr = myStr myFunction otherMyFunction // Instead of: otherMyFunction(myFunction(myStr)) def myFunction(String: str): String { //do something } def otherMyFunction(String: str): String { //do something } //...

I want to call my function like if it's a method of type String. It there such possibility? If there is, what syntax I have to use?

You seem to be looking for "extension classes" (aka "implicit classes" in Scala 2) in combination with postfix — Gaël J
– Gaël J, Commented May 19, 2022 at 10:25

ndc85430 · Accepted Answer · 2022-05-19 10:23:41Z

It sounds like what you're asking is whether you can add a method to the String type. Yes, you can do that with an implicit class. See, for example, https://www.baeldung.com/scala/implicit-classes.

Emiliano Martinez · Accepted Answer · 2022-05-19 11:43:46Z

In Scala 2 and without Scalaz or other non-core functional lib:

(myFunction compose otherMyFunction) (myStr)

Scala 2.13 you can use the pipe chaining operator

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