Hi Kristján:
--- On Tue, 11/17/09, Kristján Valur Jónsson <[email protected]> wrote:
> First off, I don't understand what select does in go,
>but I assume some conceptual similarity to unix select()
Select in Go allows a coroutine to wait on multiple channels (in Limbo,
I believe it is called alt, as in CSP). When a channel becomes active,
it executes associated code. I believe a Go style select would
simplify writing event handlers.
some pseudo code to get the flavour what select does
select:
ready(userRequestChannel.receive()):
tasklet(....)()
ready(administrationRequestchannel.receive()):
tasklet(.....)()
ready(diagnosticsRequestChannel.receive()):
tasklet(.....)()
> One thing I'd like to point out is that the select() model
...
> I believe that unix meanwhile has some similar way to avoid
> the scalability problems of select.
Yes UNIX select is bad. I think people use it for portability.
Otherwise on a UNIX system, a better choice would be EPOLL.
> Not having select() helps guide the stackless programmer
> around a bad pattern.
Although this is a different discussion, but I don't think that
most Stackless programmers see select(), since they are using some higher
level library.
Cheers,
Andrew
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