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# ebloom | ||
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## Overview | ||
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![ebloom OpenRiak Status](https://github.com/OpenRiak/ebloom/actions/workflows/erlang.yml/badge.svg?branch=openriak-3.2) | ||
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`ebloom` is a NIF wrapper around a basic bloom filter. | ||
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## Quick Start | ||
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You must have [[http://erlang.org/download.html][Erlang/OTP 22]] or later and a GNU-style build system to compile and run =ebloom=. | ||
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``` | ||
git clone git://github.com/basho/ebloom.git | ||
cd ebloom | ||
make | ||
``` | ||
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Start up an Erlang shell with the path to =ebloom= included. | ||
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``` | ||
erl -pa path/to/ebloom/ebin | ||
``` | ||
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Create a new bloom filter, insert elements, and test for an elements presence. | ||
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``` | ||
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 | ||
``` | ||
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## Contributing | ||
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The `ebloom` module is maintained to support a single function within the Riak legacy replication feature. It is not actively developed (i.e. to consider new features or performance improvements). | ||
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