The Differences between ES6 Maps and Sets

Maps are similar to Objects. Sets are similar to Arrays. Both provide you with Iterators which means that both can be used with a for...of loop.
Plain JavaScript Objects are not Iterable.
You can pass an Array directly into a Set using the constructor.
For Objects you need to loop through the properties and pass them to a Map one at a time.
Code GIST: gist.github.com/prof3ssorSt3v...

[@rotrose7531]

The idea using Set to remove duplicate is eye-opening! Thank you very much,.

[@zeonleonel4684]

Very nice explanation, Mr. Griffith!

[@LeetCodeSimplified]

Great explanation as always! Keep it up!

[@chesterxp508]

Another very cool tutorial!

[@jacksonvinicius299]

thanks man

[@rungekutta5732]

Nice short video on the differences between Set/Array and Map/Object. I wanted to ask what are the purposes of using WeakMap and WeakSet? Only the advantage of garbage collection of the keys, am I right?

[@SteveGriffith-Prof3ssorSt3v3]

That is one of the differences yes. Also, WeakSets are collections of objects only. They cannot contain arbitrary values of any type, like Sets do. With WeakMaps, unlike Maps, the keys are not enumerable.

[@ProgrammingWithOsku]

Thx bro how about map array function ist the same map object what you talk about I'm little confuse hh

[@SteveGriffith-Prof3ssorSt3v3]

Array is a datatype, just like Map and Set are datatypes. The Array datatype has a method called map. It is not the same as the Map datatype

[@ProgrammingWithOsku]

@@SteveGriffith-Prof3ssorSt3v3 Thx Bro you save my day because I thought .map() which loop the array is same as const map = new map() hhhhh thx so much.. can i ask how can i improve my skills in javascript to become senior developer

[@rutwickgangurde3247]

If you do an Array.from(names), you can convert the names Set back to an Array with duplicates removed. Quick way to eliminate duplicates from an Array.

[@reportaccounthcc2463]

Using a spread operator is a quicker/more modern way to do this

[@muhamadizranovan1653]

so what's the point of using maps if maps overwrite the previous data too?, i think maps will be different