úÎ+)Ñ      Safe-InferedXBas van Dijk <v.dijk.bas@gmail.com> , Roel van Dijk <vandijk.roel@gmail.com> TrustworthyLA result of a thread is either some exception that was thrown in the thread  and wasn'?t catched or the actual value that was returned by the thread. Like Control.Concurrent. but returns E a computation that when executed blocks until the thread terminates - then returns the final value of the thread. Like Control.Concurrent. but returns E a computation that when executed blocks until the thread terminates - then returns the final value of the thread. Like Control.Concurrent. but returns E a computation that when executed blocks until the thread terminates - then returns the final value of the thread. Like Control.Concurrent. but returns E a computation that when executed blocks until the thread terminates - then returns the final value of the thread. Like Control.Concurrent. but returns E a computation that when executed blocks until the thread terminates - then returns the final value of the thread. +Retrieve the actual value from the result. When the result is  the exception is thrown. XBas van Dijk <v.dijk.bas@gmail.com> , Roel van Dijk <vandijk.roel@gmail.com> Trustworthy A  ThreadGroup; can be understood as a counter which counts the number of Jthreads that were added to the group minus the ones that have terminated. More formally a  ThreadGroup has the following semantics:   initializes the counter to 0. * Forking a thread increments the counter. O When a forked thread terminates, whether normally or by raising an exception,  the counter is decremented.   0 yields a transaction that returns the counter.   ) blocks as long as the counter is not 0. "Create an empty group of threads. FYield a transaction that returns the number of running threads in the group. )Note that because this function yields a " computation, the returned number 7is guaranteed to be consistent inside the transaction. LConvenience function which blocks until all threads, that were added to the  group have terminated. Same as Control.Concurrent.Thread. but additionaly adds  the thread to the group. Same as Control.Concurrent.Thread. but additionaly adds  the thread to the group. Same as Control.Concurrent.Thread. but + additionaly adds the thread to the group. Same as Control.Concurrent.Thread. but + additionaly adds the thread to the group. Like Control.Concurrent.Thread. but + additionaly adds the thread to the group.                 threads-0.5.0.1Control.Concurrent.ThreadControl.Concurrent.Thread.GroupControl.Concurrent.RawControl.ConcurrentforkIOforkOnResultforkOSforkIOWithUnmaskforkOnWithUnmaskresult ThreadGroupnew nrOfRunningwait rawForkIO rawForkOnbase GHC.Conc.Sync GHC.Exception SomeExceptionSTM