On 11 Oct 09, at 10:38, Graeme Geldenhuys wrote:
Hi,
.
.
> Anyway to get to my questions, and using the code snippets shown
> below. This code is all based on the code I am porting from
> SpeedPascal. So maybe some strange usage is simply due to the age of
> SpeedPascal etc..
>
>
> --
Andrew Brunner :
> On Sun, Oct 11, 2009 at 5:25 PM, "Vinzent Höfler"
>
> Read up on forward declarations. The technique of declaring a typed
> pointer to any data structure in FPC and Delphi was that you can use
> it in fields and methods of objects and data structures w/o having to
> actually ha
2009/10/12 Andrew Brunner :
>>> pS[2] <<<
>
> Any idea what the compiler option is under Lazarus (that's what I use
> exclusively)?
>
> I get a compiler error when I don't use the ^ operator.
It only works with {$mode delphi} and lazarus uses {$mode objfpc}, i think.
_
On Mon, Oct 12, 2009 at 12:43 PM, Marc Weustink wrote:
> Graeme Geldenhuys wrote:
>>
>> On 11/10/2009, Andrew Brunner wrote:
>>>
>>> FPC forces the ^ operator while accessing structures as pointers.
>>> Delphi didn't force it and I even suspect that memory leaks can result
>>> in NOT using the
Graeme Geldenhuys wrote:
On 11/10/2009, Andrew Brunner wrote:
FPC forces the ^ operator while accessing structures as pointers.
Delphi didn't force it and I even suspect that memory leaks can result
in NOT using the ^ to denote the reference to the pointer rather than
the pointer itself.
On Sun, Oct 11, 2009 at 5:25 PM, "Vinzent Höfler"
wrote:
> Andrew Brunner :
>
>> 1st benefit:
>>
>> declaring methods associated with classes before TIntArray needs to be
>> defined or declared.
>> eg. procedure DoSomething(Var Data:TIntArray); vs (DataP:PIntArray);
>
> Huh? Is there any differe
Andrew Brunner :
> 1st benefit:
>
> declaring methods associated with classes before TIntArray needs to be
> defined or declared.
> eg. procedure DoSomething(Var Data:TIntArray); vs (DataP:PIntArray);
Huh? Is there any difference other than the second one can take a NIL value?
> Lastly, passi
On 11/10/2009, Andrew Brunner wrote:
> FPC forces the ^ operator while accessing structures as pointers.
> Delphi didn't force it and I even suspect that memory leaks can result
> in NOT using the ^ to denote the reference to the pointer rather than
> the pointer itself.
This was just discuss
In general I use pointers to data structures and especially when they
are arrays.
Take the following
PIntArray: ^TIntArray;
TIntArray:Array of Integer;
1st benefit:
declaring methods associated with classes before TIntArray needs to be
defined or declared.
eg. procedure DoSomething(Var Data
Graeme Geldenhuys schrieb:
>
>
> 1) Why would you use a pointer to an array and not simply a variable
> what IS the array? In the program I am porting the following field
> variable is defined.
>
> FLines: ^TLinesArray;
>
> Why couldn't I simply say:
>
> FLines: TLinesArray;
Because thi
Hi,
The other "arrays" discussion got me thinking, and after working so
long with only desktop type applications that talk to database API's,
I long some knowledge of the lower lever Pascal features that was so
often used in Turbo Pascal days.
Anyway, I'm port an application that was written for
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