REBOL 3 Functions: function

function spec vars body

Defines a user function with local words.

Arguments:

spec [block!] - Optional help info followed by arg words (and optional type and string)

vars [block!] - List of words that are local to the function

body [block!] - The body block of the function

Description

function is identical to func but includes a block in which you can name words considered local to the function.

average: function [block] [total] [
    total: 0
    foreach number block [total: number + total]
    total / (length? block)
]
print average [1 10 12.34]
7.78