Calling function that has parameter inside lambda in Kotlin

Question

I have a Kotlin function fun myFun(book:Book){...}. How do I pass myFun to a function that accepts a lambda?

fun acceptor(task: (book:Book) -> Unit){ var someBook = ... ... task(someBook) }

Francesc · Accepted Answer · 2019-06-10 21:07:33Z

2

class MyClass {

    fun myFun(book:Book) {
        ...
    }

    fun otherThatCallsAccept() {
        /* other stuff */
        acceptor(::myFun)
    }
}

Edit: you can't call acceptor without a parameter, but you can define a default empty lambda,

fun acceptor(task: (book:Book) -> Unit = {}) {
    /* body here */
}

edited Jun 10, 2019 at 21:07

answered Jun 10, 2019 at 20:22

Francesc

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2 Comments

salyela Over a year ago

is there a way to call acceptor without a parameter?

salyela Over a year ago

btw thanks for understanding the question. Other people I ask keep thinking I am talking about passing a function as a parameter -- even Google searches found nothing.

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