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A NIF wrapper around a basic bloom filter.
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README.org

ebloom

Overview

Travis-CI :: https://secure.travis-ci.org/basho/ebloom.png

ebloom is a NIF wrapper around a basic bloom filter.

Quick Start

You must have Erlang/OTP R13B04 or later and a GNU-style build system to compile and run ebloom.

git clone git://github.com/basho/ebloom.git
cd ebloom
make

Start up an Erlang shell with the path to ebloom included.

erl -pa path/to/ebloom/ebin

Create a new bloom filter, insert elements, and test for an elements presence.

1> PredictedElementCount=5.
5
2> FalsePositiveProbability=0.01.

3> RandomSeed=123.
123
4> {ok, Ref} = ebloom:new(PredictedElementCount, FalsePositiveProbability, RandomSeed).
{ok,<<>>}
5> ebloom:insert(Ref, <<"abcdef">>).
ok
6> true = ebloom:contains(Ref, <<"abcdef">>).
true
7> false = ebloom:contains(Ref, <<"zzzzzz">>).
false

Contributing

We encourage contributions to ebloom from the community.

  1. Fork the ebloom repository on Github.
  2. Clone your fork or add the remote if you already have a clone of the repository.
git clone git@github.com:yourusername/ebloom.git
# or
git remote add mine git@github.com:yourusername/ebloom.git
  1. Create a topic branch for your change.
git checkout -b some-topic-branch
  1. Make your change and commit. Use a clear and descriptive commit message, spanning multiple lines if detailed explanation is needed.
  2. Push to your fork of the repository and then send a pull-request through Github.
git push mine some-topic-branch
  1. A Basho engineer or community maintainer will review your patch and merge it into the main repository or send you feedback.
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