This is a very poor and overly simplified text to write basic JSON parsers, not touching any topic of writing actually fast JSON parsers. Such as not-copying to

This is a very poor and overly simplified text to write basic JSON parsers, not touching any topic of writing actually fast JSON parsers. Such as not-copying tokenizers (e.g. jsmn), word-wise tokenizers (simdjson) and fast numeric conversions (fast_double_parser at al).