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definition:
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readGlobalP :: Read a => GlobalP a -> IO a
readGlobalP (GlobalP f) = exclusiveIO (f ++ ".LOCK") $ do
cnt <- openFile f ReadMode >>= hGetContents
case reads cnt of
[(x,_)] -> return x
_ -> error $ "Cannot read persistent global entity in file: " ++ f ++
"\nFile contents:\n" ++ cnt
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demand:
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argument 2
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deterministic:
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deterministic operation
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documentation:
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--- Reads the current value of a persistent global entity.
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failfree:
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(_, _)
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indeterministic:
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referentially transparent operation
|
|
infix:
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no fixity defined
|
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iotype:
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{(_,{GlobalP}) |-> _}
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name:
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readGlobalP
|
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precedence:
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no precedence defined
|
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result-values:
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_
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signature:
|
Prelude.Read a => GlobalP a -> Prelude.IO a
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solution-complete:
|
operation might suspend on free variables
|
|
terminating:
|
possibly non-terminating
|
|
totally-defined:
|
reducible on all ground data terms
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