Update set.js

Author: leibale

examples/set.js

@@ -1,39 +1,28 @@
-// An example explaining how to add values to a set and how to retrive them
+// An example explaining how to add values to a set and how to retrieve them
 
 import { createClient } from 'redis';
 
 const client = createClient();
 await client.connect();
 
-const setName = "user1:favorites";
+const SET_NAME = 'user1:favorites';
 
-// if you try to add any data of type other than string you will get an error saying `Invalid argument type`
-// so before adding make sure the value is of type string or convert it using toString() method
+// add an item to the set
+// set members can only be `string | Buffer` so make sure to convert values if needed,
 // https://redis.io/commands/sadd/
-await client.SADD(setName, "1");
+await client.SADD(SET_NAME, '1');
 
-// retrieve values of the set defined
+// retrieve all the members of the set in one batch (be careful using it with "large" sets)
 // https://redis.io/commands/smembers/
-const favorites = await client.SMEMBERS(setName);
+const favorites = await client.SMEMBERS(SET_NAME);
 for (const favorite of favorites) {
   console.log(favorite);
 }
 
-// alternate way to retrieve data from set
+// retrieve all the members of the set in batches using SSCAN (useful with large sets)
+// https://redis.io/commands/sscan/
 for await (const member of client.sScanIterator(setName)) {
   console.log(member);
 }
 
-// another alternate way to retrieve values from the set
-// https://redis.io/commands/sscan/
-let iCursor = 0;
-do {
-  const { cursor, members } = await client.SSCAN(setName, iCursor);
-  members.forEach((member) => {
-    console.log(member);
-  });
-  iCursor = cursor;
-} while (iCursor !== 0)
-
-
 await client.quit();