Does Java 8 provide a good way to repeat a value or function?

Question

In many other languages, eg. Haskell, it is easy to repeat a value or function multiple times, eg. to get a list of 8 copies of the value 1:

take 8 (repeat 1         


        

Answer 1

Once a repeat function is somewhere defined as

public static BiConsumer repeat = (n, f) -> {
    for (int i = 1; i <= n; i++)
        f.run();
};

You can use it now and then this way, e.g.:

repeat.accept(8, () -> System.out.println("Yes"));

To get and equivalent to Haskell's

take 8 (repeat 1)

You could write

StringBuilder s = new StringBuilder();
repeat.accept(8, () -> s.append("1"));