Port of Google's Farmhash version 1.1 to pure Rust
For more on Farmhash see https://code.google.com/p/farmhash/
Farmhash is a successor to Cityhash (also from Google). Farmhash, like Cityhash before it, use ideas from Austin Appleby's MurmurHash.
extern crate farmhash; ... let value: &str = "hello world"; let res32 = farmhash::hash32(&value.as_bytes()); // res32 ==> 430397466 let res64 = farmhash::hash64(&value.as_bytes()); // res64 ==> 6381520714923946011
Tested on /usr/share/dict/web2 on Mac OSX
farmhash: required 0.06485s with 0/235887 collisions fnv: required 0.12042s with 1/235887 collisions siphash: required 0.23546s with 0/235887 collisions
Since FarmHash is not a streaming hash. It is recommended to use the function hash64 or hash32 directly. Using the hasher interface will give you a different result if you write the same bytearray in chunks before calling finish.