I hadn't noticed this, since I don't use nvl() with function or that sort of stuff. But yes, this goes contrary to my expectations, and I had to test it myself in order to believe it! (VFP 6). And yes, iif() - like AND, and OR - only evaluates an expression if it is necessary to do so. I hadn't tested that previously, either.
I tested nvl(). What does evl() do? It doesn't seem to be available in VFP 6.
>Yikes!
>Both these function evaluate the second parameter regardless. This goes against the "feel" of everthing else in the language (eg IIF())
>
>eg.
>
? nvl('x', temp())
>
>procedure temp
>wait window 'hi'
>>
>will run temp!
>I don't like it. :-(
>It takes away a lot of the usefulness of the evl and nvl functions - which I otherwise just love.
>
>Hey MS - Any plans to change of "fix" this.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
