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1. readLn :: Read a => IO a

   cabal-install-solver	Distribution.Solver.Compat.Prelude

   The readLn function combines getLine and readIO.

2. readMaybe :: Read a => String -> Maybe a

   cabal-install-solver	Distribution.Solver.Compat.Prelude

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

   >>> readMaybe "123" :: Maybe Int
   Just 123
   

   >>> readMaybe "hello" :: Maybe Int
   Nothing
   

3. readParen :: Bool -> ReadS a -> ReadS a

   cabal-install-solver	Distribution.Solver.Compat.Prelude

   readParen True p parses what p parses, but surrounded with parentheses. readParen False p parses what p parses, but optionally surrounded with parentheses.

4. reads :: Read a => ReadS a

   cabal-install-solver	Distribution.Solver.Compat.Prelude

   equivalent to readsPrec with a precedence of 0.

5. readsPrec :: Read a => Int -> ReadS a

   cabal-install-solver	Distribution.Solver.Compat.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:

   • (x,"") is an element of (readsPrec d (showsPrec d x "")).
   That is, readsPrec parses the string produced by showsPrec, and delivers the value that showsPrec started with.

6. readPkgConfigDb :: Verbosity -> ProgramDb -> IO PkgConfigDb

   cabal-install-solver	Distribution.Solver.Types.PkgConfigDb

   Query pkg-config for the list of installed packages, together with their versions. Return a PkgConfigDb encapsulating this information.

7. readCookie :: (Read a, MonadCGI m) => String -> m (Maybe a)

   cgi	Network.CGI

   Same as getCookie, but tries to read the value to the desired type.

8. readInput :: (Read a, MonadCGI m) => String -> m (Maybe a)

   cgi	Network.CGI

   Same as getInput, but tries to read the value to the desired type.

9. readCookies :: String -> [(String, String)]

   cgi	Network.CGI.Cookie

   Gets all the cookies from a Cookie: header value

10. readOnly :: forall (scope :: Scope) a . (ChanScoped c, Readable scope) => c scope a -> c 'Read a

    chan	Control.Concurrent.Chan.Extra

    No documentation available.

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