Question

How to break from inner and outer nested for loop (stop for loop, exit before for loop finished) in Rust

Answer 1

fn main() {
    'outer: for i in 1..= 100 {
        println!("outer loop (i): {i}");
    
        '_inner: for j in 1..= 200 {
            println!("    inner loop (j): {j}");
            if j >= 3 {
                // breaks from inner loop - outer loop continue
                break;
            }
            if i >= 2 {
                // breaks from outer loop, end loops
                break 'outer;
            }
        }
    }
    
    println!("After loops");
}

   
   
/*
run:
   
outer loop (i): 1
    inner loop (j): 1
    inner loop (j): 2
    inner loop (j): 3
outer loop (i): 2
    inner loop (j): 1
After loops

*/

 

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