Ownership

We have already show that passing or returning a Vector or String would result also in passing the ownership of its memory.
Lets observe in the following example this interaction:

1. In rust there are not function prototypes, so the order where the functions are written doesn’t matter.
2. Pay attention to the ownership of the String.
   • it is extremely clear what is the in and out of the function.
   • runtime impact is minimum since the memory is moved instead of copied.

fn main(){
    let mut a: String = String::from("TA");
    a.push_str("C");
    println!("{:?}", a);
    let b = myfunc(a);
    println!("{:?}", b);
}
fn myfunc(mut arg1: String) -> String {
    println!("{:?}", arg1);
    arg1.push_str("OS");
    arg1
}