Derive from `With{Equal,Compare}` publicly, even though technically this does
not matter because they bring only friend functions.
Skip explicit `public` in a struct.
In `HybridDirectMap::IteratorImpl`, make `operator==` homogeneous for
simplicity. Heterogeneous comparison of iterators of different constness work
by converting the arguments to a common type, which is simple enough to be
optimizable.
PiperOrigin-RevId: 899412745
Riegeli/records is a file format for storing a sequence of string records, typically serialized protocol buffers. It supports dense compression, fast decoding, seeking, detection and optional skipping of data corruption, filtering of proto message fields for even faster decoding, and parallel encoding.
See documentation.
Riegeli file format will only change in a backward compatible way (i.e. future readers will understand current files, but current readers might not understand files using future features).
Riegeli C++ API might change in incompatible ways.