basic_json flatten() const;
The function creates a JSON object whose keys are JSON pointers (see RFC 6901) and whose values are all primitive (see is_primitive()
for more information). The original JSON value can be restored using the unflatten()
function.
an object that maps JSON pointers to primitive values
Strong exception safety: if an exception occurs, the original value stays intact.
Linear in the size the JSON value.
Empty objects and arrays are flattened to #!json null
and will not be reconstructed correctly by the unflatten()
function.
??? example
The following code shows how a JSON object is flattened to an object whose keys consist of JSON pointers. ```cpp --8<-- "examples/flatten.cpp" ``` Output: ```json --8<-- "examples/flatten.output" ```