Enter printf format in mwx::stream
Helper class for writing format format to the << operator of mwx::stream. In the library, it is alias defined as Using format=mwx::mwx_format;.
The maximum number of arguments that can be registered in the variable number argument list is 8. 64-bit parameters such as double and uint64_t type are limited in number. If the limit is exceeded, a compile error will result due to static↵_assert.
Store the argument list received in the constructor in a variable internal to the class using the expand function of the parameter pack.
Call fctprintf() at the point operator << is called to write data to the stream
The constructor stores the format pointer and parameters. The subsequent call with the << operator interprets the format and processes the output.
| Parameters | Description |
|---|---|
The fmt must remain accessible until this object is destroyed.
fmt
Format format. See TWESDK/TWENET/current/src/printf/README.md
...
Parameters according to the format format. * The maximum number of parameters is 4. 5 or more parameters will result in a compile error. * Since consistency with the format is not checked, it is not safe for inconsistent input.