Update data through a function

Ordinary parameters receive copies of values. A result returns a new value to the caller:

mcfpp

func increase(value: int): int {
    return value + 1
}

func main() {
    var count = 2
    count = increase(count)
    print(count)
}

This prints 3. The explicit count = ... shows where the caller's value changes.

Use ScoreRef and NBTRef<T> for game scores and NBT.

Update data through a function ​