HyperLogLog

> PFADD bikes Hyperion Deimos Phoebe Quaoar
(integer) 1
> PFCOUNT bikes
(integer) 4
> PFADD commuter_bikes Salacia Mimas Quaoar
(integer) 1
> PFMERGE all_bikes bikes commuter_bikes
OK
> PFCOUNT all_bikes
(integer) 6

"""
Code samples for HyperLogLog doc pages:
    https://redis.ac.cn/docs/latest/develop/data-types/probabilistic/hyperloglogs/
"""

import redis

r = redis.Redis(decode_responses=True)


res1 = r.pfadd("bikes", "Hyperion", "Deimos", "Phoebe", "Quaoar")
print(res1)  # >>> 1

res2 = r.pfcount("bikes")
print(res2)  # >>> 4

res3 = r.pfadd("commuter_bikes", "Salacia", "Mimas", "Quaoar")
print(res3)  # >>> 1

res4 = r.pfmerge("all_bikes", "bikes", "commuter_bikes")
print(res4)  # >>> True

res5 = r.pfcount("all_bikes")
print(res5)  # >>> 6

import assert from 'assert';
import { createClient } from 'redis';

const client = createClient();
await client.connect();


const res1 = await client.pfAdd('bikes', ['Hyperion', 'Deimos', 'Phoebe', 'Quaoar']);
console.log(res1);  // >>> true

const res2 = await client.pfCount('bikes');
console.log(res2);  // >>> 4

const res3 = await client.pfAdd('commuter_bikes', ['Salacia', 'Mimas', 'Quaoar']);
console.log(res3);  // >>> true

const res4 = await client.pfMerge('all_bikes', ['bikes', 'commuter_bikes']);
console.log(res4);  // >>> OK

const res5 = await client.pfCount('all_bikes');
console.log(res5);  // >>> 6

package io.redis.examples;

import org.junit.jupiter.api.Test;
import redis.clients.jedis.UnifiedJedis;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class HyperLogLogExample {

    public void run() {
        UnifiedJedis jedis = new UnifiedJedis("redis://localhost:6379");


        long res1 = jedis.pfadd("bikes", "Hyperion", "Deimos", "Phoebe", "Quaoar");
        System.out.println(res1); // >>> 1

        long res2 = jedis.pfcount("bikes");
        System.out.println(res2); // >>> 4

        long res3 = jedis.pfadd("commuter_bikes", "Salacia", "Mimas", "Quaoar");
        System.out.println(res3); // >>> 1

        String res4 = jedis.pfmerge("all_bikes", "bikes", "commuter_bikes");
        System.out.println(res4); // >>> OK


        long res5 = jedis.pfcount("all_bikes");
        System.out.println(res5); // >>> 6

        jedis.close();
    }
}

package example_commands_test

import (
	"context"
	"fmt"

	"github.com/redis/go-redis/v9"
)


func ExampleClient_pfadd() {
	ctx := context.Background()

	rdb := redis.NewClient(&redis.Options{
		Addr:     "localhost:6379",
		Password: "", // no password docs
		DB:       0,  // use default DB
	})


	res1, err := rdb.PFAdd(ctx, "bikes", "Hyperion", "Deimos", "Phoebe", "Quaoar").Result()

	if err != nil {
		panic(err)
	}

	fmt.Println(res1) // 1

	res2, err := rdb.PFCount(ctx, "bikes").Result()

	if err != nil {
		panic(err)
	}

	fmt.Println(res2) // 4

	res3, err := rdb.PFAdd(ctx, "commuter_bikes", "Salacia", "Mimas", "Quaoar").Result()

	if err != nil {
		panic(err)
	}

	fmt.Println(res3) // 1

	res4, err := rdb.PFMerge(ctx, "all_bikes", "bikes", "commuter_bikes").Result()

	if err != nil {
		panic(err)
	}

	fmt.Println(res4) // OK

	res5, err := rdb.PFCount(ctx, "all_bikes").Result()

	if err != nil {
		panic(err)
	}

	fmt.Println(res5) // 6

}

using NRedisStack.Tests;
using StackExchange.Redis;



public class Hll_tutorial
{
    public void run()
    {
        var muxer = ConnectionMultiplexer.Connect("localhost:6379");
        var db = muxer.GetDatabase();


        bool res1 = db.HyperLogLogAdd("{bikes}", new RedisValue[] { "Hyperion", "Deimos", "Phoebe", "Quaoar" });
        Console.WriteLine(res1);    // >>> True

        long res2 = db.HyperLogLogLength("{bikes}");
        Console.WriteLine(res2);    // >>> 4

        bool res3 = db.HyperLogLogAdd("commuter_{bikes}", new RedisValue[] { "Salacia", "Mimas", "Quaoar" });
        Console.WriteLine(res3);    // >>> True

        db.HyperLogLogMerge("all_{bikes}", "{bikes}", "commuter_{bikes}");
        long res4 = db.HyperLogLogLength("all_{bikes}");
        Console.WriteLine(res4);    // >>> 6

        // Tests for 'pfadd' step.


    }
}