Copyright	(c) Thomas Schilling 2010
License	BSD-style
Maintainer	nominolo@gmail.com
Stability	experimental
Portability	portable
Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Digest.Murmur32

Description

Type class and primitives for constructing 32 bit hashes using the MurmurHash2 algorithm. See http://murmurhash.googlepages.com for details on MurmurHash2.

Synopsis

data Hash32
asWord32 :: Hash32 -> Word32
class Hashable32 a where
- hash32Add :: a -> Hash32 -> Hash32
hash32AddWord32 :: Word32 -> Hash32 -> Hash32
hash32AddInt :: Int -> Hash32 -> Hash32
hash32 :: Hashable32 a => a -> Hash32
hash32WithSeed :: Hashable32 a => Word32 -> a -> Hash32

Documentation

data Hash32 Source #

A 32 bit hash.

Instances

Instances details

Bounded Hash32 Source #
Instance details Defined in Data.Digest.Murmur32 Methods minBound :: Hash32 # maxBound :: Hash32 #
Eq Hash32 Source #
Instance details Defined in Data.Digest.Murmur32 Methods (==) :: Hash32 -> Hash32 -> Bool # (/=) :: Hash32 -> Hash32 -> Bool #
Ord Hash32 Source #
Instance details Defined in Data.Digest.Murmur32 Methods compare :: Hash32 -> Hash32 -> Ordering # (<) :: Hash32 -> Hash32 -> Bool # (<=) :: Hash32 -> Hash32 -> Bool # (>) :: Hash32 -> Hash32 -> Bool # (>=) :: Hash32 -> Hash32 -> Bool # max :: Hash32 -> Hash32 -> Hash32 # min :: Hash32 -> Hash32 -> Hash32 #
Show Hash32 Source #
Instance details Defined in Data.Digest.Murmur32 Methods showsPrec :: Int -> Hash32 -> ShowS # show :: Hash32 -> String # showList :: [Hash32] -> ShowS #

asWord32 :: Hash32 -> Word32 Source #

Extract 32 bit word from hash.

class Hashable32 a where Source #

Methods

hash32Add :: a -> Hash32 -> Hash32 Source #

Instances

Instances details

Hashable32 Bool Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Bool -> Hash32 -> Hash32 Source #
Hashable32 Char Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Char -> Hash32 -> Hash32 Source #
Hashable32 Int Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Int -> Hash32 -> Hash32 Source #
Hashable32 Integer Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Integer -> Hash32 -> Hash32 Source #
Hashable32 Word32 Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Word32 -> Hash32 -> Hash32 Source #
Hashable32 () Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: () -> Hash32 -> Hash32 Source #
Hashable32 ByteString Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: ByteString -> Hash32 -> Hash32 Source #
Hashable32 ByteString Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: ByteString -> Hash32 -> Hash32 Source #
Hashable32 a => Hashable32 [a] Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: [a] -> Hash32 -> Hash32 Source #
Hashable32 a => Hashable32 (Maybe a) Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Maybe a -> Hash32 -> Hash32 Source #
(Hashable32 a, Hashable32 b) => Hashable32 (Either a b) Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: Either a b -> Hash32 -> Hash32 Source #
(Hashable32 a, Hashable32 b) => Hashable32 (a, b) Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: (a, b) -> Hash32 -> Hash32 Source #
(Hashable32 a, Hashable32 b, Hashable32 c) => Hashable32 (a, b, c) Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: (a, b, c) -> Hash32 -> Hash32 Source #
(Hashable32 a, Hashable32 b, Hashable32 c, Hashable32 d) => Hashable32 (a, b, c, d) Source #
Instance details Defined in Data.Digest.Murmur32 Methods hash32Add :: (a, b, c, d) -> Hash32 -> Hash32 Source #

hash32AddWord32 :: Word32 -> Hash32 -> Hash32 Source #

hash32AddInt :: Int -> Hash32 -> Hash32 Source #

hash32 :: Hashable32 a => a -> Hash32 Source #

Create a hash using the default seed.

hash32WithSeed :: Hashable32 a => Word32 -> a -> Hash32 Source #

Create a hash using a custom seed.

The seed should be non-zero, but other than that can be an arbitrary number. Different seeds will give different hashes, and thus (most likely) different hash collisions.