time: add Duration.times/1

Author: spytheman

vlib/time/duration.v

@@ -120,3 +120,9 @@ pub fn (d Duration) debug() string {
 	}
 	return 'Duration: ${sign}${res.join(', ')}'
 }
+
+// times allows you to return fractional unit durations, based on an existing duration.
+// For example, you can: `half_an_hour := time.hour.times(0.5)` .
+pub fn (d Duration) times(x f64) Duration {
+	return f64(d) * x
+}

vlib/time/duration_test.v

@@ -45,3 +45,9 @@ fn test_duration_debug() {
 	assert time.Duration(169 * time.hour + 5 * time.minute + 7 * time.second).debug() == 'Duration: 7days, 1h, 5m, 7s'
 	assert (-time.Duration(169 * time.hour + 5 * time.minute + 7 * time.second)).debug() == 'Duration: - 7days, 1h, 5m, 7s'
 }
+
+fn test_duration_times() {
+	assert time.second.times(2) == 2 * time.second
+	assert time.minute.times(0.5) == 30 * time.second
+	assert time.minute.times(-1.5) == -90 * time.second
+}