The parser does not extensively use std::string. to parse json keys, It uses an internal stringview class mirroring the json string (string_view is candidate to

The parser does not extensively use std::string. to parse json keys, It uses an internal stringview class mirroring the json string (string_view is candidate to get into the next C++ standard). When I said malloc free, I meant that no intermediate memory is allocated: actually, If your json object only contains int or floats, the parser will not use malloc: it will just traverse the string and fill the scalars of your destination object (thanks to static introspection), a big difference with state of the art json parsers returning an intermediate dynamically allocated tree that you have to interpret after the parsing. Of course, if the destination object stores instances of std::string of std::vector, the iod library will allocated them and fill them with the json values.