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1. readFile :: FilePath -> IO Text

   text	Data.Text.IO

   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.

2. readFile :: FilePath -> IO Text

   text	Data.Text.IO.Utf8

   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.

3. readChunk :: Handle__ -> CharBuffer -> IO Text

   text	Data.Text.Internal.IO

   Read a single chunk of strict text from a buffer. Used by both the strict and lazy implementations of hGetContents.

4. readFile :: FilePath -> IO Text

   text	Data.Text.Lazy.IO

   Read a file and return its contents as a string. The file is read lazily, 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.

5. readerToAccumT :: forall (m :: Type -> Type) w a . (Functor m, Monoid w) => ReaderT w m a -> AccumT w m a

   transformers	Control.Monad.Trans.Accum

   Convert a read-only computation into an accumulation computation.

6. reader :: forall (m :: Type -> Type) r a w s . Monad m => (r -> a) -> RWST r w s m a

   transformers	Control.Monad.Trans.RWS.CPS

   Constructor for computations in the reader monad (equivalent to asks).

7. reader :: forall w (m :: Type -> Type) r a s . (Monoid w, Monad m) => (r -> a) -> RWST r w s m a

   transformers	Control.Monad.Trans.RWS.Lazy

   Constructor for computations in the reader monad (equivalent to asks).

8. reader :: forall w (m :: Type -> Type) r a s . (Monoid w, Monad m) => (r -> a) -> RWST r w s m a

   transformers	Control.Monad.Trans.RWS.Strict

   Constructor for computations in the reader monad (equivalent to asks).

9. reader :: forall (m :: Type -> Type) r a . Monad m => (r -> a) -> ReaderT r m a

   transformers	Control.Monad.Trans.Reader

   Constructor for computations in the reader monad (equivalent to asks).

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

    mtl	Control.Monad.Reader

    Retrieves a function of the current environment.

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