SADD

redis> SADD myset "Hello" "World"
(integer) 2
redis> SADD myset "World"
(integer) 0
redis> SMEMBERS myset
1) "Hello"
2) "World"

import redis
r = redis.Redis(decode_responses=True)
res1 = r.sadd("myset", "Hello", "World")
print(res1) # >>> 2
res2 = r.sadd("myset", "World")
print(res2) # >>> 0
res3 = r.smembers("myset")
print(res3) # >>> {'Hello', 'World'}
res4 = r.sadd("myset", "Hello", "World")
print(res4) # >>> 2
res5 = r.smembers("myset")
print(res5) # >>> {'Hello', 'World'}

import { createClient } from 'redis';
const client = createClient();
await client.connect().catch(console.error);
const res1 = await client.sAdd('myset', ['Hello', 'World']);
console.log(res1); // 2

const res2 = await client.sAdd('myset', ['World']);
console.log(res2); // 0

const res3 = await client.sMembers('myset')
console.log(res3); // ['Hello', 'World']

const res4 = await client.sAdd('myset', ['Hello', 'World']);
console.log(res4); // 2

const res5 = await client.sMembers('myset')
console.log(res5); // ['Hello', 'World']

await client.close();

import staticjava.util.stream.Collectors.toList;import staticorg.junit.jupiter.api.Assertions.assertArrayEquals;import staticorg.junit.jupiter.api.Assertions.assertEquals;importjava.util.Set;importredis.clients.jedis.UnifiedJedis;publicclass CmdsSetExample{publicvoidrun(){UnifiedJedisjedis=newUnifiedJedis("redis://localhost:6379");longsAddResult1=jedis.sadd("myset","Hello");System.out.println(sAddResult1);// >>> 1longsAddResult2=jedis.sadd("myset","World");System.out.println(sAddResult2);// >>> 1longsAddResult3=jedis.sadd("myset","World");System.out.println(sAddResult3);// >>> 0Set<String>sAddResult4=jedis.smembers("myset");System.out.println(sAddResult4.stream().sorted().collect(toList()));// >>> [Hello, World]longsMembersResult1=jedis.sadd("myset","Hello","World");System.out.println(sMembersResult1);// >>> 2Set<String>sMembersResult2=jedis.smembers("myset");System.out.println(sMembersResult2.stream().sorted().collect(toList()));// >>> [Hello, World]jedis.close();}}

package example_commands_test
import (
	"context"
	"fmt"
	"github.com/redis/go-redis/v9"
)
func ExampleClient_sadd_cmd() {
	ctx := context.Background()
	rdb := redis.NewClient(&redis.Options{
		Addr: "localhost:6379",
		Password: "", // no password docs
		DB: 0, // use default DB
	})
	sAddResult1, err := rdb.SAdd(ctx, "myset", "Hello").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sAddResult1) // >>> 1
	sAddResult2, err := rdb.SAdd(ctx, "myset", "World").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sAddResult2) // >>> 1
	sAddResult3, err := rdb.SAdd(ctx, "myset", "World").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sAddResult3) // >>> 0
	sMembersResult, err := rdb.SMembers(ctx, "myset").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sMembersResult) // >>> [Hello World]
}
func ExampleClient_smembers_cmd() {
	ctx := context.Background()
	rdb := redis.NewClient(&redis.Options{
		Addr: "localhost:6379",
		Password: "", // no password docs
		DB: 0, // use default DB
	})
	sAddResult, err := rdb.SAdd(ctx, "myset", "Hello", "World").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sAddResult) // >>> 2
	sMembersResult, err := rdb.SMembers(ctx, "myset").Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(sMembersResult) // >>> [Hello World]
}

using StackExchange.Redis;
public class CmdsSetExample
{
 public void Run()
 {
 var muxer = ConnectionMultiplexer.Connect("localhost:6379");
 var db = muxer.GetDatabase();
 bool sAddResult1 = db.SetAdd("myset", "Hello");
 Console.WriteLine(sAddResult1); // >>> True
 bool sAddResult2 = db.SetAdd("myset", "World");
 Console.WriteLine(sAddResult2); // >>> True
 bool sAddResult3 = db.SetAdd("myset", "World");
 Console.WriteLine(sAddResult2); // >>> False
 RedisValue[] sAddResult4 = db.SetMembers("myset");
 Array.Sort(sAddResult4);
 Console.WriteLine(string.Join(", ", sAddResult4));
 // >>> Hello, World
 long sMembersResult1 = db.SetAdd(
 "myset", ["Hello", "World"]
 );
 Console.WriteLine(sMembersResult1); // >>> 2
 RedisValue[] sMembersResult2 = db.SetMembers("myset");
 Array.Sort(sMembersResult2);
 Console.WriteLine(string.Join(", ", sMembersResult2));
 // >>> Hello, World
 }
}

<?php
require 'vendor/autoload.php';
use Predis\Client as PredisClient;
class CmdSetTest
{
 public function testCmdSet() {
 $r = new PredisClient([
 'scheme' => 'tcp',
 'host' => '127.0.0.1',
 'port' => 6379,
 'password' => '',
 'database' => 0,
 ]);
 $res1 = $r->sadd('myset', ['Hello', 'World']);
 echo $res1 . PHP_EOL;
 // >>> 2

 $res2 = $r->sadd('myset', ['World']);
 echo $res2 . PHP_EOL;
 // >>> 0

 $res3 = $r->smembers('myset');
 sort($res3);
 echo json_encode($res3) . PHP_EOL;
 // >>> ["Hello","World"]

 $res4 = $r->sadd('myset', ['Hello', 'World']);
 echo $res4 . PHP_EOL;
 // >>> 2

 $res5 = $r->smembers('myset');
 sort($res5);
 echo json_encode($res5) . PHP_EOL;
 // >>> ["Hello","World"]
 }
}