September Morn Update

Task/Metronome/Sidef/metronome.sidef

@@ -0,0 +1,20 @@
+func metronome (beats_per_minute = 72, beats_per_bar = 4) {
+
+    var counter   = 0
+    var duration  = 60/beats_per_minute
+    var base_time = Time.micro+duration
+
+    STDOUT.autoflush(true)
+
+    for next_time in (base_time..Inf `by` duration) {
+        if (counter++ %% beats_per_bar) {
+            print "\nTICK"
+        }
+        else {
+            print " tick"
+        }
+        Sys.sleep(next_time - Time.micro)
+    }
+}
+
+say metronome(ARGV.map{ Num(_) }...)