update

core.h

@@ -175,6 +175,12 @@ DefineList(string, String);
 }
 #define ListTail(list, start) ListSlice(list, start, (list).length)
 
+#define ListRemove(list, index)\
+    if ((index) >= 0 && (index) < (list)->length) {\
+        memcpy((list)->data + (index), (list)->data + (index) + 1, (parentNode->children.length - (i + 1))*sizeof(*((list)->data)));\
+        parentNode->children.length -= 1;\
+    }
+
 // ### Strings ###
 struct string {
     char *str;