select-0.2: Give the select(2) POSIX function a simple STM interface
Perform an IO action, and place its result in an MVar. See
also Control.Concurrent.STM.TMVarIO for a TMVar version.
run :: IO a -> IO (MVar a)Source
run action returns an MVar immediately. The result of
action will be placed in said MVar. If the MVar is full when
action completes, the return value is lost (the action does not
wait for an empty MVar).
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