maphash

It can be used to write your own generic hash table, see for an example: https://pkg.go.dev/gitlab.eif.urjc.es/paurea/cuckoo In contrast to https://github.com/dolthub/maphash it can use any hash function (as long as it implements hash.Hash64) and it does not depend on any internal detail of the runtime. It works by inspecting the type and creating the hasher to be used later. One of the types defined lets you also hash non-comparable types (ignoring the non-comparable part).

It's pinned to a Go version and these: https://github.com/dolthub/maphash/blob/main/hasher_test.go

For a long time Go did not expose their super efficient internal map hashing algorithm that, if possible, would use AES instructions from the processor to hash even faster. That is, they did not expose it as an official API. People usually did some "unsafe" usage to link to that internal hashing function for their own super-fast map implementations. That was changed some time ago. They released official maphash package: https://pkg.go.dev/hash/maphash Otter author could probably look into replacing their 3rd party hashing dependency (https://github.com/dolthub/maphash) with the official one and knock off an unneeded dependency :)

I was curious what function was used for hashing (how do you write a generic hash function in go?) and it's pretty disgusting. https://github.com/dolthub/maphash/blob/main/runtime.go