Question

How to pass array by reference to function in Rust

Answer 1

fn main() {
   let mut arr = [3, 9, 0, 2];
   
   f(&mut arr); // pass array by reference

   print!("main(): {:?}", arr);
}

fn f(arr:&mut [i32; 4]) {
    for i in 0..4 {
        arr[i] = 0;
    }
    
    println!("f() {:?}",arr);
}




/*
run:

f() [0, 0, 0, 0]
main(): [0, 0, 0, 0]

*/

 

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