[hgs3]

Yup and if your implementation uses a hashmap for object key -> value lookup, then I recommend allocating the hashmap after parsing the object not during to avoid continually resizing the hashmap. You can implement this by using an intrusive linked list to track your key/value JSON nodes until the time comes to allocate the hashmap. Basically when parsing an object 1. use a counter 'N' to track the number of keys, 2. link the JSON nodes representing key/value pairs into an intrusive linked list, 3. after parsing the object use 'N' to allocate a perfectly sized hashmap in one go. You can then iterate over the linked list of JSON key/value pair nodes adding them to the hashmap. You can use this same trick when parsing JSON arrays to avoid continually resizing a backing array. Alternatively, never allocate a backing array and instead use the linked list to implement an iterator.