pub fn since(start: &Instant) -> Duration {
        let total_real = start.elapsed_real();
        let total_user = start.elapsed_user();
        let total_sys = start.elapsed_sys();

        Duration { total_real, total_user, total_sys }
    }
/// Returns a measure from a given instant and iterations.
Returns a measure from a given instant and iterations.
Returns a measure from a given instant and iterations .
pub fn since(start: &Instant) -> Duration {
        let total_real = start.elapsed_real();
        let total_user = start.elapsed_user();
        let total_sys = start.elapsed_sys();
        Duration { total_real, total_user, total_sys }
    }
pub fn since ( start : & Instant ) -> Duration { let total_real = start . elapsed_real ( ) ; let total_user = start . elapsed_user ( ) ; let total_sys = start . elapsed_sys ( ) ; Duration { total_real , total_user , total_sys } }
Returns a measure from a given instant and iterations.
Returns a measure from a given instant and iterations .
start
&Instant