; Simple function declarations don't need a block.
fun add_two(a: int, b: int): int a + b

; Functions return the result of the last expression implicitly.
fun add_three(a: int, b: int, c: int): int {
    add_two(a, b) + c
}

; Functions that don't return anything must explicitly state it as returning
; nil.
fun foo(): nil {
    println("hello buddy")
}

; An alternate form for empty return values.
fun bar(): () {
    foo()
}

; We support multiple return values, in this case the "return" keyword must be
; explict.
fun baz(a: int, b: str): (int, str) {
    return(1, "hello")
}

; Make sure we can use pointer types on params and return values.
fun test(a: @int[256], b: @str): @int {
    a
}