On August 10, 2023 at 0:06:57 +0200, Hairy Pixels via fpc-pascal
wrote:
>> On Aug 9, 2023, at 2:54 PM, Tomas Hajny via fpc-pascal
>> wrote:
>>
>>>
>>> 1) what does "i := x - x;" do and what is it's purpose and why doesn't "x +
>>> x" work the same?
>>
>> Pointer subtraction is a reverse
> On Aug 9, 2023, at 2:54 PM, Tomas Hajny via fpc-pascal
> wrote:
>
>>
>> 1) what does "i := x - x;" do and what is it's purpose and why doesn't "x +
>> x" work the same?
>
> Pointer subtraction is a reverse operation to adding a number to a pointer;
> the result of the subtraction is
On August 9, 2023 at 22:14:17 +0200, Hairy Pixels via fpc-pascal
wrote:
>Playing around I had a more questions about pointer operations I've never used
>myself.
>
>1) what does "i := x - x;" do and what is it's purpose and why doesn't "x + x"
>work the same?
Pointer subtraction is a reverse
Playing around I had a more questions about pointer operations I've never used
myself.
1) what does "i := x - x;" do and what is it's purpose and why doesn't "x + x"
work the same?
2) I've used pointer equality of course but what does "x > p" do and what is
its purpose?
===
var
> On Aug 8, 2023, at 11:53 PM, Sven Barth via fpc-pascal
> wrote:
>
> By default @ returns a *untyped* pointer that can be assigned to any pointer
> type. Thus is compatible with Delphi and can be controlled with the
> $TypedAddress directive (there's a slight exception to this when you
