Data commit

Task/Singleton/EMal/singleton.emal

@@ -0,0 +1,17 @@
+type Singleton
+model
+  text greeting
+  fun speak = void by block do writeLine(me.greeting + " I'm a singleton") end
+end
+Singleton instance
+fun getInstance = Singleton by block
+  if instance == null do instance = Singleton() end
+  return instance
+end
+type SomeOtherType
+Singleton s1 = Singleton.getInstance()
+s1.greeting = "Hello"
+Singleton s2 = Singleton.getInstance()
+s2.greeting.append(", World!")
+writeLine(s1 + " and " + s2 + " are the same object: " + (s1 == s2) + ", s2: " + s2.greeting)
+s1.speak() # call instance method