reads package:rebase

reads :: Read a => ReadS a
rebase Rebase.Prelude
equivalent to readsPrec with a precedence of 0.
type ReadS a = String -> [(a, String)]
rebase Rebase.Prelude
A parser for a type a, represented as a function that takes a String and returns a list of possible parses as (a,String) pairs. Note that this kind of backtracking parser is very inefficient; reading a large structure may be quite slow (cf ReadP).
readSTRef :: STRef s a -> ST s a
rebase Rebase.Prelude
Read the value of an STRef
readSTime :: ParseTime t => Bool -> TimeLocale -> String -> ReadS t
rebase Rebase.Prelude
Parse a time value given a format string. See parseTimeM for details.
readS_to_Prec :: (Int -> ReadS a) -> ReadPrec a
rebase Rebase.Prelude
readSigned :: Real a => ReadS a -> ReadS a
rebase Rebase.Prelude
Reads a signed Real value, given a reader for an unsigned value.
readsBinary1 :: (Read1 f, Read1 g, Read a) => String -> (f a -> g a -> t) -> String -> ReadS t
rebase Rebase.Prelude
readsBinary1 n c n' matches the name of a binary data constructor and then parses its arguments using readsPrec1.
readsBinaryWith :: (Int -> ReadS a) -> (Int -> ReadS b) -> String -> (a -> b -> t) -> String -> ReadS t
rebase Rebase.Prelude
readsBinaryWith rp1 rp2 n c n' matches the name of a binary data constructor and then parses its arguments using rp1 and rp2 respectively.
readsData :: (String -> ReadS a) -> Int -> ReadS a
rebase Rebase.Prelude
readsData p d is a parser for datatypes where each alternative begins with a data constructor. It parses the constructor and passes it to p. Parsers for various constructors can be constructed with readsUnary, readsUnary1 and readsBinary1, and combined with mappend from the Monoid class.
readsPrec :: Read a => Int -> ReadS a
rebase Rebase.Prelude
attempts to parse a value from the front of the string, returning a list of (parsed value, remaining string) pairs. If there is no successful parse, the returned list is empty. Derived instances of Read and Show satisfy the following: That is, readsPrec parses the string produced by showsPrec, and delivers the value that showsPrec started with.
readsPrec1 :: (Read1 f, Read a) => Int -> ReadS (f a)
rebase Rebase.Prelude
Lift the standard readsPrec and readList functions through the type constructor.
readsPrec2 :: (Read2 f, Read a, Read b) => Int -> ReadS (f a b)
rebase Rebase.Prelude
Lift the standard readsPrec function through the type constructor.
readsUnary :: Read a => String -> (a -> t) -> String -> ReadS t
rebase Rebase.Prelude
readsUnary n c n' matches the name of a unary data constructor and then parses its argument using readsPrec.
readsUnary1 :: (Read1 f, Read a) => String -> (f a -> t) -> String -> ReadS t
rebase Rebase.Prelude
readsUnary1 n c n' matches the name of a unary data constructor and then parses its argument using readsPrec1.
readsUnaryWith :: (Int -> ReadS a) -> String -> (a -> t) -> String -> ReadS t
rebase Rebase.Prelude
readsUnaryWith rp n c n' matches the name of a unary data constructor and then parses its argument using rp.
data () => ThreadStatus
rebase Rebase.Prelude
The current status of a thread
liftReadsPrec :: Read1 f => (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (f a)
rebase Rebase.Prelude
readsPrec function for an application of the type constructor based on readsPrec and readList functions for the argument type.
liftReadsPrec2 :: Read2 f => (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> Int -> ReadS (f a b)
rebase Rebase.Prelude
readsPrec function for an application of the type constructor based on readsPrec and readList functions for the argument types.
listThreads :: IO [ThreadId]
rebase Rebase.Prelude
List the Haskell threads of the current process.
rtsSupportsBoundThreads :: Bool
rebase Rebase.Prelude
True if bound threads are supported. If rtsSupportsBoundThreads is False, isCurrentThreadBound will always return False and both forkOS and runInBoundThread will fail.
threadStatus :: ThreadId -> IO ThreadStatus
rebase Rebase.Prelude
Query the current execution status of a thread.
threadWaitReadSTM :: Fd -> IO (STM (), IO ())
rebase Rebase.Prelude
Returns an STM action that can be used to wait for data to read from a file descriptor. The second returned value is an IO action that can be used to deregister interest in the file descriptor.