How to replace ::new in kotlin?

Question

Following a tutorial on Disruptor in Java and they make the following call

Disruptor<LongEvent> disruptor = new Disruptor<>(LongEvent::new, bufferSize, executor);

Where LongEvent is instantiated using a default constructor of no argument- ie. new LongEvent().

The equivalent line in Kotlin is throwing an error at the ::new. What is the correct syntax for ::new in Kotlin?

# THIS IS INVALID
val disruptor = Disruptor<LongEvent>(LongEvent::new, bufferSize, executor)

Answer 1

the constructor reference expression in kotlin is ::LongEvent.

Constructors can be referenced just like methods and properties. Constructors are referenced by using the :: operator and adding the class name.