Hoogle Search

Within LTS Haskell 24.32 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. readUnliftedMutVar :: PrimUnlifted a => UnliftedMutVar s a -> ST s a

   primitive-unlifted	Data.Primitive.Unlifted.MutVar.ST

   No documentation available.

2. readSmallUnliftedArray :: (PrimMonad m, PrimUnlifted a) => SmallMutableUnliftedArray (PrimState m) a -> Int -> m a

   primitive-unlifted	Data.Primitive.Unlifted.SmallArray

   No documentation available.

3. readSmallUnliftedArray# :: forall s (a :: UnliftedType) . SmallMutableUnliftedArray# s a -> Int# -> State# s -> (# State# s, a #)

   primitive-unlifted	Data.Primitive.Unlifted.SmallArray.Primops

   No documentation available.

4. readSmallUnliftedArray :: PrimUnlifted a => SmallMutableUnliftedArray s a -> Int -> ST s a

   primitive-unlifted	Data.Primitive.Unlifted.SmallArray.ST

   No documentation available.

5. readEither :: (Read a, StringConv String e, StringConv e String) => e -> Either e a

   protolude	Protolude

   Parse a string using the Read instance. Succeeds if there is exactly one valid result. A Left value indicates a parse error.

   >>> readEither "123" :: Either Text Int
   Right 123
   

   >>> readEither "hello" :: Either Text Int
   Left "Prelude.read: no parse"
   

6. readFile :: FilePath -> IO Text

   protolude	Protolude

   The readFile function reads a file and returns the contents of the file as a string. The entire file is read strictly, as with getContents. Beware that this function (similarly to readFile) is locale-dependent. Unexpected system locale may cause your application to read corrupted data or throw runtime exceptions about "invalid argument (invalid byte sequence)" or "invalid argument (invalid character)". This is also slow, because GHC first converts an entire input to UTF-32, which is afterwards converted to UTF-8. If your data is UTF-8, using decodeUtf8 . readFile is a much faster and safer alternative.

7. readMaybe :: (Read b, StringConv a String) => a -> Maybe b

   protolude	Protolude

   Parse a string using the Read instance. Succeeds if there is exactly one valid result.

   >>> readMaybe ("123" :: Text) :: Maybe Int
   Just 123
   

   >>> readMaybe ("hello" :: Text) :: Maybe Int
   Nothing
   

8. reader :: MonadReader r m => (r -> a) -> m a

   protolude	Protolude

   Retrieves a function of the current environment.

9. reads :: Read a => ReadS a

   protolude	Protolude

   equivalent to readsPrec with a precedence of 0.

10. readXml :: XmlContent a => String -> Either String a

    HaXml	Text.XML.HaXml.XmlContent

    Read a fully-typed XML document from a string.

Page 199 of many | Previous | Next