Re: [fpc-pascal] Re: WSAGetLastError returns 0 when it shouldn't but I cannot see why

2008-02-28 Thread Luca Olivetti 

En/na L ha escrit:

Found the problem using my brute force writeln('') skills. It is an 
issue with freepascal's stack or something to do with buggy threads 
methinks. As it is when you call lasterror within another procedure 
with local variables.. they are corrupted or something.


Aha.. I changed the by Value parameter to a CONST parameter in the error 
procedure (Perror).. And this solves the issue..


So something to do with calling by Value within a thread versus a const 
(pointer?).


This seriously worries me, since I use threads extensively, and I mostly 
use call by value parameters.


Bye
--
Luca

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Re: [fpc-pascal] Externalization and inclusion of .PAS files (with GTK+) ?

2008-02-28 Thread ik 
Please don't think in PHP or C when you use Pascal... in C the
compiler passes multiple times to be able to map between every line of
code and locate things on other includes.

The pascal's compiler does not include full units inside a big unit.
it includes sub implementations:

types.inc

type
  MyInt = type longint;

// end of  include file

main.pas

unit main;
interface
...
{$include types.inc}
...

implementation
...
end.

Please note that if you place things out of order, that is
include/declear a function before you included types, and that
function uses MyInt, the compiler will not be able to find the type
you wish to use.

Ido

On Thu, Feb 28, 2008 at 1:22 PM, T. Guilleminot <[EMAIL PROTECTED]> wrote:
> Hi,
>
>  I'd like to simplify my programs by creating a short MAIN.PAS file and
>  several additional .PAS files called inside.
>  So I'd like to deport most of my code (procedures, functions...) to these
>  external .pas files and include them into the main.pas, a kind of
>  "include"-like in PHP.
>
>  I browsed the doc but between the "{$INCLUDE myfile1.pas}", the "uses"
>  clause (...) I'm quite lost and it has never worked for me yet.
>  As I code with GTK+ binding I also get GTK objects problem (eg : "unknown
>  object"...).
>
>  Does anyone able to provide me a simple example to achieve this ?
>  Thanks for any answer.
>  Tom
>
>
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>



-- 
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[fpc-pascal] Externalization and inclusion of .PAS files (with GTK+) ?

2008-02-28 Thread T. Guilleminot 
Hi,

I'd like to simplify my programs by creating a short MAIN.PAS file and
several additional .PAS files called inside.
So I'd like to deport most of my code (procedures, functions...) to these
external .pas files and include them into the main.pas, a kind of
"include"-like in PHP.

I browsed the doc but between the "{$INCLUDE myfile1.pas}", the "uses"
clause (...) I'm quite lost and it has never worked for me yet.
As I code with GTK+ binding I also get GTK objects problem (eg : "unknown
object"...).

Does anyone able to provide me a simple example to achieve this ?
Thanks for any answer.
Tom


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[fpc-pascal] Re: WSAGetLastError returns 0 when it shouldn't but I cannot see why

2008-02-28 Thread L 
> This seriously worries me, since I use threads extensively, and I 
mostly use call by value

> parameters.



Bye
--
Luca


I use CONST parameters wherever possible for strings.. so that:
1) if I ever port the code to a DLL it is safer (can cast pchar in)
2) const is a stricter contract
3) performance (ha,  premature optimization, by val could be faster sometimes)

As for threads.. I hate them. Wherever there is an alternative solution, I use 
it. Even if the compiler is working okay, threads still suck. For example I 
don't give a hoot about a threaded ISAPI server being supposedly more 
performance oriented than CGI - as if performance makes a difference when the 
program with threads is buggy. A performance friendly buggy program is about as 
useless as a demented cheetah that smashes into trees every 3 meters. However, 
with Sockets programming and blocking sockets... threads are unfortunately one 
known way of handling the blocking socket.. so.. what to do. LNet? Dunno, 
Haven't tried it much.. have to try it sometime though ;-)


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Re: [fpc-pascal] Externalization and inclusion of .PAS files (with GTK+) ?

2008-02-28 Thread Artur Stuczynski 

T. Guilleminot wites:


So I'd like to deport most of my code (procedures, functions...) to these
external .pas files and include them into the main.pas, a kind of
"include"-like in PHP.
(...)
Does anyone able to provide me a simple example to achieve this ?
Thanks for any answer.


Probably most elegant (though not fully equivalent to PHP) solution I've 
seen is in fpc's units:


unit main;

interface
uses ... {all units required by main.pas and included.pas in interace part}

{$undef read_implementation}
{$define read_interface}

{$i included.pas}

{$undef read_interface}

implementation
uses ... {all units required by main.pas and included.pas in 
implementation part}


{$define read_implementation}

{$i included.pas}

{$undef read_implementation}

begin
end.

...

unit included;

{$ifdef read_interface}
//interface part goes here
{$endif read_interface}

{$ifdef read_implementation}
//implementation part goes here
{$endif read_implementation}

Hope this helps.
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