# Sets

## Overview

**Set( \[Dictinary] )**

It optimized for fast looking up items.

Works like Dictionaries except;

* Does not remember the order you add values, automatically sorts the data you inserted.
* Does not allow duplicates, removes them.
* InDctionary you **.append** (end to the array) but here you **.insert** (into the set).

```swift
var actors = Set<String>()
actors.insert("Denzel Washington")
actors.insert("Tom Cruise")
actors.insert("Nicolas Cage")
actors.insert("Samuel L Jackson")

print(actors)
```

## Sources

### Videos

### Articles / Documents

* <https://www.hackingwithswift.com/quick-start/beginners/how-to-use-sets-for-fast-data-lookup>