ifMaybe
| Run Settings | |
|---|---|
| Language | Haskell |
| Language Version | |
| Run Command |
| Snippet Metadata | |
|---|---|
| Owner | danielmg17 |
| Created | |
| Modified | |
| Visibility | Public |
import qualified Data.Vector as V
ifMaybe :: Bool -> b -> Maybe b
ifMaybe p x = if p then Just x else Nothing
main = do
let vec = V.fromList [1,2,3,4,5]
print $ V.mapMaybe (\x -> ifMaybe (x < 4) (show x ++ "p")) vec
| Editor Settings | |
|---|---|
| Theme | |
| Key bindings | |
| Full width | |
| Lines |