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Within LTS Haskell 24.51 (ghc-9.10.3)
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streamly Streamly.Internal.Data.SVar No documentation available.
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Read a serialized (as in the Read typeclass) config data structure from a string This is handy for the case where you need a strongly-typed, possibly hierarchical configuration. It's not a revolutionary idea to use Read deserialization of a text file but I found it useful to support comments and also wrapping possible failure in Either. Example:
import TCE.Data.ReadConf ( readConfig ) -- Write your own custom data structure for config, like this: data Config = Config { foo :: String , bar :: Int , baz :: [String] , qux :: Bool } deriving Read -- Make it an instance of Read main = do -- Parse a String containing a single instance of the above data type econf <- readConfig <$> readFile "read-example.conf" -- The result is an Either String Config either print -- Failure is reported as a Left (\c -> (print $ bar c) >> (print $ qux c)) econfAnd then file.conf could contain this Haskell source code:-- An example config file Config { foo = "some data" --, bar = 0 , bar = 42 , baz = [ "dogs" , "cats" ] , qux = True } newtype
ReadShowEncoding opt atext-encode Text.Encode.PostgresqlSimple No documentation available.
ReadShowEncoding :: a -> ReadShowEncoding opt atext-encode Text.Encode.PostgresqlSimple No documentation available.
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ReadAttr x o = ReadWriteAttr x () othreepenny-gui Graphics.UI.Threepenny.Core Attribute that only supports the get operation.
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threepenny-gui Graphics.UI.Threepenny.Core Generalized attribute with different types for getting and setting.
ReadWriteAttr :: (x -> UI o) -> (i -> x -> UI ()) -> ReadWriteAttr x i othreepenny-gui Graphics.UI.Threepenny.Core No documentation available.
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vector-mmap Data.Vector.Storable.MMap file is mapped read-only, file must exist
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vector-mmap Data.Vector.Storable.MMap file is mapped read-write, file must exist
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vector-mmap Data.Vector.Storable.MMap file is mapped read-write, if file does not exist it will be created with default permissions, region parameter specifies size, if file size is lower it will be extended with zeros