...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The number of bytes of input available at next_in
.
std::size_t avail_in;
If there is no more input, this should be set to zero. The application
must update next_in
and
avail_in
when avail_in
has dropped to zero.