 | cal3d-0.1: Haskell binding to the Cal3D animation library. | Source code | Contents | Index |
| Graphics.Animation.Cal3D.Error |
| type Fallible a = Either String a |
| type IOFallible a = IO (Fallible a) |
| checkErrorValue :: Eq a => IO a -> a -> String -> IO (Either String a) |
| checkError :: Eq a => IO a -> a -> String -> IO (Either String ()) |
| type Fallible a = Either String a | Source |
| type IOFallible a = IO (Fallible a) | Source |
| checkErrorValue | Source |
| :: Eq a | |
| => IO a | action |
| -> a | bad value |
| -> String | error message |
| -> IO (Either String a) | |
| Compares the result of an action with a bad value, such as an error code, returns (Left errormessage) if action value == bad, otherwise (Right actionresult) | |
| checkError | Source |
| :: Eq a | |
| => IO a | action |
| -> a | bad value |
| -> String | error message |
| -> IO (Either String ()) | |
| Like checkError, but returns (Right ()) instead of an interesting value. | |