Re: I suppose the idea of classes and inheritance is
- From: erewhon@xxxxxxxxxx (J French)
- Date: Sat, 14 Oct 2006 07:52:11 GMT
On Fri, 13 Oct 2006 13:55:08 -0700, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@xxxxxxxxxxx> wrote:
<snip>
You have not got Range Checking turned on
- either turn it on via Project/Options or use {$R+}
- then try running the code
IMO Range Checking should always be on by default, and only turned off
under very defined circumstances.
come on now, you think i am that numb to perform this test with
out turning on range testing?, take my word for it, it was on in the
test.
Learning how the compiler really does things helps a lot.
Jamie, I cut and pasted your code.
I then ran it - no Error
I then added {$R+} and it threw an error
Possibly there is something wrong with your Delphi setup, or maybe
your version behaves differently - I'm using D4P
keep digging.
you did notice that i used a variable and not a constant to
index the string?
It does not matter
as long as your in the boundaries of the memory mapped for that
string, things just keep on computing happily..! range testing would
in volve the compiler to include the String Length function call to know
where the actual end of the string really is.. the last time i looked,
range checking performed checks of known entities of know size at
compile time.
dynamically created objects like strings requires additional function
calls the be used in the code.
then of course, i am doing this in Win32 and not .Net or any other
make believe language.
Better check again, if you do not get an error, then you have a major
problem.
.
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