Data update

Task/Concurrent-computing/Crystal/concurrent-computing.cr

@@ -0,0 +1,17 @@
+require "channel"
+require "fiber"
+require "random"
+
+done = Channel(Nil).new
+
+"Enjoy Rosetta Code".split.map do |x|
+  spawn do
+    sleep Random.new.rand(0..500).milliseconds
+    puts x
+    done.send nil
+  end
+end
+
+3.times do
+  done.receive
+end