Re: "after" and "update" - is it a bug, or I did something wrong?

In comp.lang.tcl, Uwe Klein wrote:

after $timeout
will block your application hard for 500ms
_nothing_ happens.

while vwait will activate the eventloop
until the variable ::cont changes (
and then drop out )

Yes - but the fact, that application is "blocked for 0,5s", doesn't mean,
that there can be such heavy CPU load.
--
Z.
.