# SET

### Description

The `set` operator converts a list to a set (in the Python sense).

### Example removing Duplicates

```
list(set([1, 1, 1]))
```

Returns `[1]` since a set cannot contain duplicates

### Example to speed-up Rules

```
large_list := set([87, 737, ..., 1])
42 in large_list
```

will evaluate much faster than directly doing `in` on the list, since a set can check if something is part of it in O(1) (see [Big O Notation](https://en.wikipedia.org/wiki/Big_O_notation))