Re: Add sleep builtin

[L A Walsh]

Clint Hepner wrote:
> > On Aug 19, 2018, at 10:25 AM, konsolebox <konsolebox@gmail.com> wrote:
> >
> > Hi Chet,
> >
> > The sleep command is often used in loops and using the external sleep
> > is expensive.  
> >     
>
> Expensive is relative, as the time spent actually sleeping probably dwarfs the 
> startup time. If not, you probably want to find an alternative to polling 
> anyway.
>   

If he implements sleep with the floating point option then the above might
not be true:

sleep .001 (ms sleep)...not practical if loaded each time)
I often use sleep .1/.3/.5 ... if the builtin doesn't support sleep times
< 1 second, then it's probably not worth it.

Also, needs to actually sleep for the listed time.

I  remember some implementations only wait till the clock reaches the
new time in seconds -- meaning that the actual sleep time could be
.001 seconds.