is there any utility method that repeatedly calls ...

# getting-started

[Bernhard]

is there any utility method that repeatedly calls a lambda on itself for n times? E.g.
2.repeat(3) { it + 1 } would add +1 to 3 2 times

[Bernhard]

yeah, that's what I did, but did not know about kotlin.repeat, thanks

[Bernhard]

fun <T> Int.repeat(initial: T, block: (T) -> T): T {
    var accumulator = initial
    kotlin.repeat(this) {
        accumulator = block(accumulator)
    }
    return accumulator
}

[Bernhard]

thank you

[Youssef Shoaib [MOD]]

You could also do (0..2).fold(3) { it, _ -> it + 1 } but it's kinda ugly because it passes the index in

[Klitos Kyriacou]

Another way: generateSequence(3) { it + 1 }.take(1 + 2).last() (it's 1 + 2 because the seed (3) is counted as the first element, and you want another 2).

[ephemient]

why not just

generateSequence(3) { it + 1 }.elementAt(2)