Returning from loops
One of the uses of a loop
is to retry an operation until it succeeds. If the
operation returns a value though, you might need to pass it to the rest of the
code: put it after the break
, and it will be returned by the loop
expression.
fn main() { let mut counter = 0; let result = loop { counter += 1; if counter == 10 { break counter * 2; } }; assert_eq!(result, 20); }