LiveStyle.Hash.Murmur (LiveStyle v0.13.0)

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MurmurHash2 32-bit implementation for LiveStyle.

This is a port of the JavaScript MurmurHash2 implementation used by StyleX. The algorithm produces stable, well-distributed 32-bit hashes suitable for generating short, unique class names.

Algorithm

MurmurHash2 is a non-cryptographic hash function designed for speed. It processes input in 4-byte chunks and produces a 32-bit hash.

JavaScript Compatibility

This implementation carefully matches JavaScript's bitwise semantics:

  • 32-bit signed integer conversions (like |0)
  • Unsigned right shift (>>>)
  • Multiplication with implicit truncation

Example

iex> LiveStyle.Hash.Murmur.hash("hello", 1)
613153351

Summary

Functions

hash(str, seed \\ 0)

Computes the MurmurHash2 32-bit hash of a string.

Functions

hash(str, seed \\ 0)

@spec hash(String.t(), non_neg_integer()) :: non_neg_integer()

Computes the MurmurHash2 32-bit hash of a string.

Parameters

  • str - The string to hash
  • seed - The seed value (default: 0)

Returns

A 32-bit unsigned integer hash value.

Examples

iex> LiveStyle.Hash.Murmur.hash("hello")
1335831723

iex> LiveStyle.Hash.Murmur.hash("hello", 1)
613153351