Write the specified map reference to the specified output stream.
Declared in <bdld_datum.h>
std::ostream&
operator<<(
std::ostream& stream,
DatumMapRef const& rhs);Write the specified rhs value to the specified output stream in the format shown below: ` [ abc = aa, pqr = bb]- abc and pqr are key strings, while aa and bb are the result of invoking operator '<<' on the individual value elements in the map ` and return a reference to the modifiable stream. The function will have no effect if the stream is not valid.
a reference to stream
| Name | Description |
|---|---|
| stream | output stream |
| rhs | value to write |