Class generation now also adds an equality operator

tools/generate_class.py

@@ -75,6 +75,10 @@ struct {obj_name} {{
     src.append('};')
 
     src.append(f'''
+bool operator==(const {obj_name}& obj1, const {obj_name}& obj2) {{
+    return obj1.idx == obj2.idx;
+}}
+
 {obj_name} {obj_name}Collection::iter::operator*() {{
     return {{collection, idx}};
 }}