Hashers
Registry resolving a LongHasher.name back to its live implementation. The sketch families serialize only the mixer's name; resolve reconstructs the function when a spec is materialized or a sketch result is queried. SplitMix64 is pre-registered.
Custom mixers are not serializable on their own (a lambda cannot round-trip), so the wire carries the name and this registry supplies the code. Register a custom mixer at startup on every process that materializes or queries the affected sketches; the entry is global and not synchronized, so register before concurrent use.
Functions
Register hasher under its LongHasher.name, replacing any prior entry of that name.
Resolve the LongHasher named by ref, or throw if no mixer was registered under it.
register
Register hasher under its LongHasher.name, replacing any prior entry of that name.
resolve
Resolve the LongHasher named by ref, or throw if no mixer was registered under it.