Initial revision

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 31 insertions, 0 deletions

diff --git a/sample/observ.rb b/sample/observ.rb
new file mode 100644
index 000000000..f7b1e7313
--- /dev/null
+++ b/sample/observ.rb
@@ -0,0 +1,31 @@
+#! /usr/local/bin/ruby
+
+require "thread"
+require "observer"
+
+class Tick
+  include Observable
+  def initialize
+    Thread.start do
+      while TRUE
+	sleep 0.999
+	changed
+	notify_observers(Time.now.strftime("%H:%M:%S"))
+      end
+    end
+  end
+end
+
+class Clock
+  def initialize
+    @tick = Tick.new
+    @tick.add_observer(self)
+  end
+  def update(time)
+    print "\e[8D", time
+    STDOUT.flush
+  end
+end
+
+clock = Clock.new
+sleep