add copyconstructor

.gitignore

@@ -7,3 +7,4 @@ compclass/compclass
 copy/copy
 structcons/structcons
 enum/enum
+copyconstructor/copyconstructor

copyconstructor/Makefile

@@ -0,0 +1,12 @@
+
+TARGET := copyconstructor
+
+all: $(TARGET)
+
+$(TARGET): $(TARGET).d
+
+%: %.d
+	gdc -o $@ $<
+
+clean:
+	-rm -f *.o *~ $(TARGET)

copyconstructor/copyconstructor.d

@@ -0,0 +1,26 @@
+
+import std.stdio;
+
+class Foo
+{
+    static int count;
+    int f1;
+    this()
+    {
+        count++;
+        f1 = 42;
+        writefln("Constructed a Foo, %d exist!", count);
+    }
+    this(Foo f)
+    {
+        count++;
+        writefln("Copied a Foo, %d exist! f1: %d", count, f1);
+    }
+};
+
+void main()
+{
+    Foo foo1 = new Foo();
+    Foo foo2 = new Foo();
+    Foo foo3 = new Foo(foo1);
+}