This is an extension library offer (un)currying features for kotlin.
import me.ming.kotlin.function.extension.*
fun main(args: Array<String>)
{
val func3: (String, Int, Any) -> Unit = { a, b, c -> println("a: $a, b: $b, c: $c")}
val curried: (String) -> (Int) -> (Any) -> Unit = func3.curry()
}import me.ming.kotlin.function.extension.*
fun main(args: Array<String>)
{
val funx3: (String) -> (Int) -> (Any) -> Unit = { a -> { b -> { c -> println("a: $a, b: $b, c: $c") } } }
val uncurried: (String, Int, Any) -> Unit = funx3.uncurry()
}This is a convenient way to bind some arguments from left to right.
import me.ming.kotlin.function.extension.*
fun main(args: Array<String>)
{
val func3: (String, Int, Any) -> Unit = { a, b, c -> println("a: $a, b: $b, c: $c")}
// Apply the first-n parameter, returns the function with rest parameters.
val apply1: (Int, Any) -> Unit = func3.apply("foo")
val apply2: (Any) -> Unit = func3.apply("foo", 23)
// Or, you can just "invoke" the function continuously by using the extension operator.
val invoke1: (Int, Any) -> Unit = func3("foo")
val invoke2: (Any) -> Unit = func3("foo", 23)
// When you fill all parameters, the origin "invoke" method is called.
val result: Unit = func3("foo", 23, "whatever")
// But, there is no such "apply" method for you to fill all parameters.
val error: Unit = func3.apply("foo", 23, "whatever") // Compile error: Too many argument for "apply" function.
}