SCARD

SCARD my-key

import { Redis } from "@upstash/redis";

const redis = Redis.fromEnv();

await redis.sadd("key", "a", "b", "c");
const cardinality = await redis.scard("key");
console.log(cardinality); // 3

from upstash_redis import Redis

redis = Redis.from_env()
result = redis.scard("my-key")
print(result)

import Redis from "ioredis";

const redis = new Redis(process.env.REDIS_URL!);
const result = await redis.scard("my-key");
console.log(result);

import { createClient } from "redis";

const client = await createClient({ url: process.env.REDIS_URL })
  .on("error", console.error)
  .connect();
const result = await client.sCard("my-key");
console.log(result);

import os
import redis

client = redis.from_url(os.environ["REDIS_URL"])
result = client.scard("my-key")
print(result)

package main

import (
    "context"
    "fmt"
    "os"

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

func main() {
    opts, err := redis.ParseURL(os.Getenv("REDIS_URL"))
    if err != nil {
        panic(err)
    }
    client := redis.NewClient(opts)
    result, err := client.SCard(context.Background(), "my-key").Result()
    if err != nil {
        panic(err)
    }
    fmt.Println(result)
}

import java.net.URI;

import redis.clients.jedis.Jedis;

try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {
  Object result = jedis.scard("my-key");
  System.out.println(result);
}

use redis::TypedCommands;

fn main() -> redis::RedisResult<()> {
    let url = std::env::var("REDIS_URL").expect("REDIS_URL is not set");
    let client = redis::Client::open(url)?;
    let mut connection = client.get_connection()?;

    let result = connection.scard("my-key")?;
    println!("{result:?}");
    Ok(())
}