Can I get some help with swift functions? I find them really confusing

Question

I recently started learning swift but I cant figure out how functions work.

Answer 1

Explain what exactly you do not understand and give an example.

Answer 2

Yes, everything is very simple, it's like when declaring a variable, you set the type of the return variable of the function.

Answer 3

I dont understand anything after the ->.

Answer 4

Thanks