Hi,
On Wed, Mar 11, 2009 at 7:00 AM, Ron Pinkas <[email protected]> wrote:
> In my test, Clipper did NOT optimize at all, Upper()/Lower()/Asc()/Chr().
> Here is my simple test:
>
> PROCEDURE Main()
> LOCAL c1 := Upper( "Hello" ), c2 := Lower( "World" )
> LOCAL c3 := Chr( 65 )
> LOCAL n1 := Asc( "A" )
add here: c3 := Upper("hello2" + Chr(97))
>
> ? c1, c2, c3, n1
> RETURN
By observing the obj file, you can find the string "HELLO3A", so it
looks like Clipper does not optimize Upper in LOCAL declarations, but
optimizes the non-LOCAL occurence. (and optimizes Chr there. However,
I can't easily read Clipper PCODE from binary files and so can't tell
if Chr is optimized in LOCAL declarations.).
As for the LOWER, AFAIR it was never optimized.
-- Ph.
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