| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Data.TypeRep.CMap
Synopsis
- newtype TypeRepMap (f :: k -> *) = TypeRepMap {}
- empty :: TypeRepMap f
- insert :: forall a f. Typeable a => f a -> TypeRepMap f -> TypeRepMap f
- keys :: TypeRepMap f -> [TypeRep]
- lookup :: forall a f. Typeable a => TypeRepMap f -> Maybe (f a)
- size :: TypeRepMap f -> Int
Documentation
newtype TypeRepMap (f :: k -> *) Source #
Map-like data structure with types served as the keys.
Constructors
| TypeRepMap | |
Instances
| NFData (TypeRepMap f) Source # | |
Defined in Data.TypeRep.CMap Methods rnf :: TypeRepMap f -> () # | |
empty :: TypeRepMap f Source #
Empty structure.
insert :: forall a f. Typeable a => f a -> TypeRepMap f -> TypeRepMap f Source #
Inserts the value with its type as a key.
keys :: TypeRepMap f -> [TypeRep] Source #
lookup :: forall a f. Typeable a => TypeRepMap f -> Maybe (f a) Source #
Looks up the value at the type. >>> let x = lookup $ insert (11 :: Int) empty >>> x :: Maybe Int Just 11 >>> x :: Maybe () Nothing
size :: TypeRepMap f -> Int Source #