> All things considered, unless you're running this code a _lot_ it really
> doesn't make a significant difference.
Yeah, it does get run a lot, and as the program grows, there are more and
more places in the code like this where things could be a little more
efficient. A little here and a little there add up to a lot. My program
relies heavily on tight, efficient code (and I'm anal like that...). The
faster it runs, the more data I can collect, the more happy my customers
are. :c)
Thanks for the input.
-Mike
"Avilla, Dane" <[EMAIL PROTECTED]> wrote in message
news:60552@palm-dev-forum...
>
> > Is there any difference in the speed at which the code
> > completes if x is
> > false? Will it change if the first line in sample one reads :
> > if(x && (y | 0x3f) )
> >
>
> I learned that "sample one" basically evaluates to "sample two", so they
are
> equivalent, from a time standpoint. I haven't run this in a profiler
though
> . .
>
> Hmmm, looking further at your message, basically my understanding is that
> the compiler will break the if statement w/ the "&" into two if statements
> and evalutate the second only if the first is true. In your case if the
> first item is false, it doesn't matter if the second is true or false; the
> if statement will fail. So if you know that one of the conditions will be
> false most of the time, evaluate it first and you will come out ahead in
the
> long run.
>
> All things considered, unless you're running this code a _lot_ it really
> doesn't make a significant difference.
>
> Cheers,
>
> -DGA
>
> > This is kind of a generic question, but I don't have enough
> > knowledge of the
> > inner workings of compilers to know the answer.
> >
> > Given these two code snippets:
> >
> > // begin sample one
> > if((y | 0x3f) && x)
> > {
> > //do something
> > }
> > else
> > {
> > //do something else
> > }
> > // end sample one
> >
> > // begin sample two
> > if(x)
> > {
> > if(y | 0x3f)
> > {
> > // do something
> > }
> > }
> > else
> > {
> > // do something else
> > }
> > // end sample two
> >
> > Unfortunately, my program wont run in the emulator so I cannot run the
> > profiler on the code...
> >
> > Thanks,
> > Mike
> >
> >
> >
> > --
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> >
>
>
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