>Whoever needs the reminder... it's been drilled into me that any compiler will shortcircuit your logicals, period. And I take that into account whenever I'm coding. I've seen a few experienced guys do things like this

VB being the most prominent exception.

>
>

do case
>   case not .FirstProcessGoesWell()
>   case not .SecondProcessGoesWell()
>...
>   case not .LastProcessGoesWell()
>   otherwise
>      oMsg.Message("all is well")
>endcase

>...which is, for me, perhaps the neatest packaging of multiphase batch process, which needs to be abandoned on first critical error. Can't remember whom I first saw doing this, perhaps the Feltmans or someone around the ComCodebook project. This is shortcircuiting by design.

I do that mostly for debug ease - and remember seeing it in non-visual foxpro

>
>However, I've found a case where I'd expect shortcircuiting to work, but it doesn't. It's the evl() and nvl() functions, where both parameters are evaluated, regardless of what the first one returns. So if you try
>
>xx=evl(call1(), call2())
>
>call2 will be called no matter what call1 does. This is kind of counterintuitive, because the equivalent construct with iif() will not have this side effect.

Probably a function of being a function: these are parameters and parameters are calculated before entering the functions body.