Popularity
6.4
Growing
Activity
0.0
Stable
8
3
8
Monthly Downloads: 112
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Latest version: v0.1
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README
murmur-hash
A simple, Haskell-only implementation of MurmurHash2.
Two variants are provided: 32 bit and 64 bits. We do not simply use the machine word size since the bit width of the hash determines the collision probability which should stay under user control.
Example Usage
Generating hashes:
$ import Data.Digest.Murmur32
$ hash32 "foo" ==> Hash32 0xd2d0a99a
$ hash32 "foa" ==> Hash32 0x7d544e71
$ hash32WithSeed 42 "foo" ==> Hash32 0x7a69563b
Custom instances:
data Foo a = Foo a | Bar String
instance Hashable32 a => Hashable32 (Foo a) where
hash32Add (Bar s) = hash32AddInt 1 `combine` hash32Add s
hash32Add (Foo a) = hash32AddInt 2 `combine` hash32Add a