Support `HybridDirectMap` building with projection of keys and values from the source iterable. This is especially useful in the context of `HybridDirectMap` because it does not support incremental modification. A projection cannot be applied during an insertion loop. PiperOrigin-RevId: 889697962
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.