How to make a list of lists into single list F#

Question

I have a list of lists ``` LL = [[1;2;3];[4;5;6];[7;8;9]] ``` And I would like it to look like this ``` LSimple= [1;2;3;4;5;6;7;8;9] ``` That's as simple as I can ask it, but maybe rewording helps. How can I parse this lists of lists and create a simple list from it?

Accepted Answer

```
List.concat LL 
```

Will do what you want. The X.concat family of functions concatenate any sequence of the collection X to a single X where X may be a `List`, `Array`, `Seq` or even a `String` with a given separator.

How to make a list of lists into single list F#

Solution

Problem