Initial data commit

Task/Delegates/D/delegates-1.d

@@ -0,0 +1,24 @@
+class Delegator {
+    string delegate() hasDelegate;
+
+    string operation() {
+        if (hasDelegate is null)
+            return "Default implementation";
+        return hasDelegate();
+    }
+
+    typeof(this) setDg(string delegate() dg) {
+        hasDelegate = dg;
+        return this;
+    }
+}
+
+void main() {
+    import std.stdio;
+    auto dr = new Delegator;
+    string delegate() thing = () => "Delegate implementation";
+
+    writeln(dr.operation());
+    writeln(dr.operation());
+    writeln(dr.setDg(thing).operation());
+}