equivalent to Tcl 'after' command?

[Jeff Epler]

> On Thu, 22 Apr 2004 17:42:37 GMT, Mark Harrison <mh at pixar.com>
> wrote:
> > I'm writing some event-driven programs, and I would like
> > to do the equivalent of the Tcl 'after' command, e.g.:
> > 
> > 	after 1000 {puts "one second has elapsed"}
> > 
> > 1.  What's the most canonical way of doing this?
> 
On Thu, Apr 22, 2004 at 11:52:57PM +0100, Alan Gauld wrote:
> I suspect its to start a thread that in turn starts with 
> a sleep command. Not very pretty but approximately the same.

But "doing something in about X ms in a thread" and "doing something in
about X ms from the event loop" are different: the latter basically
frees you from worrying about locking, race conditions, and the rest,
because you know it can't run concurrently with arbitrary other code.

Jeff