bitset

BitSet implementation for JavaScript

npm install bitset
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BitSet

This module implements an array of bits, that grows as needed. It can be used from both JavaScript as well as CoffeeScript.

var bs = new BitSet(31);

_(12).times(function(n){ 
  bs.set(n);
});

console.dir(bs);

Mind you: The example uses underscore.js

Usage

This is very useful for realtime metrics with for example Redis.

Installation

npm install bitset

Performance

It performs pretty well, you can try the performance.js in the support folder. This is the output with a 31 bit word size and 10.000.000 bits:

set 10000000 bits: 418ms
cardinality 10000000
cardinality: 150ms

Tests

Testing is done via the excellent mocha (cake test)

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