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iOS Generics in Swift Generic Functions, Parameters and Constraints Generic Functions

What is going on here?

I don't know why this is not compiling I have tried but it is not even compiling

func duplicate<T>(_ item: T, numberOfTimes: Int) -> [T] {

}

This is how I think it is but I don't know why it is not compiling

generics.swift
func duplicate<T>(_ item: T, _ numberOfTimes: Int) -> [ T ] {


}

1 Answer

Going by the code you've given, this won't compile. The reason is that you declared your function to return a [T]. But, your function body is empty AKA no return statement. So you've gone against your declaration.

In your function body just put return [item] That should help you temporarily compile it.