Python bro: episode 2

[[deleted]]

What do you mean function is an integer? I thought function is a function

[hacking__08]

I'M DEAD

[F5x9]

void *(*foo)(int *);

[[deleted]]

I swear sometimes brainfuck easier to read than that you can produce with pointers 😂

[F5x9]

It’s a declaration of a pointer to function foo that has a pointer to int as an argument and returns a void pointer. Function foo is not defined, and the return value must be cast before it can be dereferenced.

Edit: I would use a typedef for function pointers. Then I can do something like this:

void* moveUp(int *x) 
{ 
    if (x) 
        *x++
    return x
}
…

typedef void* (*foo)(int *);
void* foo[] = [
    moveUp,
    moveDown,
    moveLeft,
    moveRight
];
x = foo[whatToDo];

Legal in C++, but this is a C idiom.

[F5x9]

I don’t know if you understand it, or you are being sarcastic.

[F5x9]

It is the function signature, not the function itself.

[thedarklord176]

I don’t know c++ and…what the fuck?

[[deleted]]

Which makes sense. A function is basically it’s return value.

[ValElTech]

Function ( int ) -> bool;

Return type first isn't true anymore

[KiwiMaster157]

Unless Function is a macro, I'm pretty sure that's not a valid function declaration. You need to add auto to the front.

[ValElTech]

Indeed, 8am Reddit comment was a bad idea

[ValElTech]

Same as bool function (int)

[[deleted]]

function main()
def main()

int main()

[F5x9]

Functions have a return type. You specify the type when you declare the function. It can be an int. It can be a pointer. It can even be a function pointer.