Questiion about the principle of Unit Kotlin-CodePudding

I am new to Kotlin and I have question as I dont fully understand the principle of Unit:

onChecked:(Boolean) -> Unit

Does it pass the certain data as parameter to other function ( as a Unit)?

CodePudding user response：

(Boolean) -> Unit is a function type. Before the arrow are the parameters, in this case a Boolean and after the arrow is the return type. Unit simply means that it doesn't return anything.

See also this documentation

CodePudding user response：

Unit is method signature which actually return nothing like to java void.

for example: Kotlin

fun onChecked(isCheck: Boolean): Unit {
  //TODO
}

Java

public void onChecked(boolean isCheck) {
//TODO
}

Both are similar