Parameter passing

[dee0xeed]

@Sze

You can easily expect from the function signature that it wont modify a or b and will return the result.

Also I can easily write a madness like this:

fn madd(a: i32, b: i32) i32 {
    const aa = a + 1;
    const bb = b + 1;
    return aa + bb;
}

@chung-leong

I wish the programming world had kept the distinction between “function” and “procedure”.

yep.

if a subroutine result (returning value) does depend on it’s parameters then obviously it should not mutate them => “function” in mathematical sense => functional programming => everything is immutable => garbage collection.

otherwise do what you want with copies on stack, if you have a pointer to pointer, feel free to realloc it and so on => procedural programming => manual memory management => no hair-raising things like “monads” for i/o, you just have read and write.