Scala Single Abstract Method Types

Examples

Lambda Syntax

NOTE: This is only available in Scala 2.12+ (and in recent 2.11.x versions with the - Xexperimental -Xfuture compiler flags)

A SAM type can be implemented using a lambda:

2.11.8

trait Runnable {
 def run(): Unit
}
val t: Runnable = () => println("foo")

The type can optionally have other non-abstract members:

2.11.8

trait Runnable {
 def run(): Unit
 def concrete: Int = 42
}
val t: Runnable = () => println("foo")

Conclusion

In this page (written and validated by A. Gawali) you learned about Scala Single Abstract Method Types . What's Next? If you are interested in completing Scala tutorial, your next topic will be learning about: Scala Streams.

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