John Goerzen <[EMAIL PROTECTED]> wrote: > On Fri, Mar 24, 2006 at 11:07:53AM +0000, Malcolm Wallace wrote: > > I assume that since a non-concurrent implementation has > > only one thread, that thread will be trying to MVar-synchronise with > > something that does not exist, and hence be blocked for ever. > > Not necessarily. An MVar is a useful tool in place of an IORef. It > works well when a given hunk of code is used in a threaded program, > but it also works well in a non-threaded program. If they are used > correctly, there is no problem.
Your final sentence is the one that I want to emphasise. What does it mean to use an MVar "correctly", such that one can avoid blocking in a non-threaded implementation? Regards, Malcolm _______________________________________________ Haskell-prime mailing list Haskell-prime@haskell.org http://haskell.org/mailman/listinfo/haskell-prime