Macro base::time

macro_rules! time {
    ( $(> $stopwatches:expr, )+ $e:expr) => { ... };
    ($e:expr, |$time:pat| $time_action:expr) => { ... };
}

Counts the time it takes to evaluate an expression.

Expects <stopwatches> => <expr> where <stopwatches> is a comma-separated list of Stopwatch.