September 2017 Update

Task/Metronome/Kotlin/metronome.kotlin

@@ -0,0 +1,16 @@
+// version 1.1.2
+
+fun metronome(bpm: Int, bpb: Int, maxBeats: Int = Int.MAX_VALUE) {
+    val delay = 60_000L / bpm
+    var beats = 0
+    do {
+        Thread.sleep(delay)
+        if (beats % bpb == 0) print("\nTICK ")
+        else print("tick ")
+        beats++
+    }
+    while (beats < maxBeats)
+    println()
+}
+
+fun main(args: Array<String>) = metronome(120, 4, 20) // limit to 20 beats

Task/Metronome/Ruby/metronome.rb

@@ -0,0 +1,14 @@
+#!/usr/bin/ruby
+
+bpm = Integer(ARGV[0]) rescue 60 # sets BPM by the first command line argument, set to 60 if none provided
+msr = Integer(ARGV[1]) rescue 4 # sets number of beats in a measure by the second command line argument, set to 4 if none provided
+i = 0
+
+loop do
+  (msr-1).times do
+    puts "\a"
+    sleep(60.0/bpm)
+  end
+  puts "\aAND #{i += 1}"
+  sleep(60.0/bpm)
+end