import public Control.Lensunpacked : Iso' String (List Char)An isomorphism between a string and a list of characters.
```idris
unpacked = from packed
```
packed : Iso' (List Char) StringAn isomorphism between a list of characters and a string.
```idris
packed = from unpacked
```
reversed : Iso' String StringAn isomorphism between a string and its reverse.