add compclass

.gitignore

@@ -3,3 +3,4 @@ factorial/factorial
 datatypes/datatypes
 appending/appending
 import/import
+compclass/compclass

compclass/Makefile

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

compclass/compclass.d

@@ -0,0 +1,29 @@
+import std.stdio;
+
+class Foo
+{
+    public:
+        int a;
+        int b;
+        override bool opEquals(Object o_other)
+        {
+            Foo other = cast(Foo) o_other;
+            return a == other.a && b == other.b;
+        }
+};
+
+void main(string[] args)
+{
+    Foo f = new Foo();
+    f.a = 1;
+    f.b = 2;
+    Foo g = new Foo();
+    g.a = 1;
+    g.b = 2;
+    Foo h = new Foo();
+    h.a = 1;
+    h.b = 3;
+    writefln("f == g: %s", f == g);
+    writefln("f == h: %s", f == h);
+    writefln("g == h: %s", g == h);
+}