How to define a variadic function

Question

I\'m looking for something similar to Javascript\'s arguments array:

function parent(){
  child.apply(this.arguments);
}

I\'m awar

Answer 1

The correct syntax is:

(define (parent . args-list)
    )

Use it like this:

(parent 1 2 3 4 5)

Inside the procedure, all the arguments will be bound to a list named args-list. In the above snippet, args-list will have '(1 2 3 4 5) as its value. This is an example of how variadic functions work in Scheme.

For the sake of completeness, the same mechanism can be used for anonymous functions, too (notice that args-list is not surrounded by parenthesis):

((lambda args-list ) 1 2 3 4 5)