Add the ssockets unit to your uses clause.
Michael
On Mon, 7 Sep 2020, James Richters via fpc-pascal wrote:
When I try to compile either of the examples below, I get Error: Identifier not found "ESocketError"
Any ideas?
James
Yes, catch the ESocketError in a try..except:
Try
On Tue, 08 Sep 2020 00:59:51 +0200, Bo Berglund via fpc-pascal
wrote:
>Today when I was setting up a Raspberry PiZero I was hit with this
>message when I was going to build fpc 3.0.4 (sources checked out from
>svn):
>
>Makefile:2790: *** The only supported starting compiler version is
>3.0.2.
I added ssockets now I can compile it.
I have this working with the ssockets unit added:
Try
S:=TFPHTTPCLIENT.SIMPLEGET('http://10.10.01.01/3/15');
except
On E: ESocketError do
Writeln('Could not connect to server'); end;
But when I try the version with the timeout, I always get
I'm trying to figure out how TList works. I found the code example below by
doing a search, but I can't compile it, I get Error: Illegal qualifier on the
line
MyRec.Value := tmp;
It's indicating the error is on the V of Value
I tried commenting that line out, then I get the same error
Two observations:
1. In Pascal you should use "new" and "dispose" to allocate and
deallocate record types - not GetMem and FreeMem.
2. MyRec is a pointer type and you should code the line as
MyRec^.Value := tmp
On 08/09/2020 12:10, James Richters via fpc-pascal wrote:
I'm trying to figure
On Tue, 8 Sep 2020, James Richters via fpc-pascal wrote:
I added ssockets now I can compile it.
I have this working with the ssockets unit added:
Try
S:=TFPHTTPCLIENT.SIMPLEGET('http://10.10.01.01/3/15');
except
On E: ESocketError do
Writeln('Could not connect to server'); end;
Can you please give me an example of the correct way to use new and dispose?
I'll try the pointer
Thanks for the advice
James
-Original Message-
From: fpc-pascal On Behalf Of Tony
Whyman via fpc-pascal
Sent: Tuesday, September 8, 2020 7:21 AM
To: fpc-pascal@lists.freepascal.org
Cc:
Another way is to declare TMyRec as class instead of record.
In this case, you don't need the dereference operator ^ .
No need of new and dispose, just Create and Free, as for TMyRecList.
I don't know if there is a better performance when you use a record,
but as far as I know,
See https://www.freepascal.org/docs-html/rtl/system/dispose.html
On 08/09/2020 12:51, James Richters wrote:
Can you please give me an example of the correct way to use new and dispose?
I'll try the pointer
Thanks for the advice
James
-Original Message-
From: fpc-pascal On Behalf Of
I am using RPi3 and RPi4 platforms when working on RPi projects with
Lazarus 2.0.8 and Fpc 3.0.4.
Now I realized that the binaries I create will probably not work on
PiZero and RPi2 devices because these are Arm6 and the dev platform is
Arm7.
Is there some project setting I can activate in order
Hi,
some crippled formatting, so again:
However, in your case (records) I would rather use TFPGList from FGL unit:
1) add {$modeswitch ADVANCEDRECORDS}
2) add FGL to uses
3) define class operator =
test = record Port :String; Size :Byte; Status :Word; class
operator = (A,B:
On Mon, 7 Sep 2020 14:45:31 -0700 (MST), Brian via fpc-pascal
wrote:
>Bo,
>
>Most of the users on this forum have never interfaced with hardware , as you
>can see from the responses. Those who have interfaced with hardware have
>developed circular buffers which they know work , and they reuse
Hi,
I used TFPObjectList only once, for visual component TECAccordion
(https://wiki.lazarus.freepascal.org/Eye-Candy_Controls#TECAccordion). Each
item of list is derived from TWinControl so it is possible to use it even for
visual components (like TCollection).
However, in your case
On Tue, 08 Sep 2020 15:11:07 +0200, Bo Berglund via fpc-pascal
wrote:
>Is there some project setting I can activate in order to build for
>*all* RPi devices by only using ARMv6 instructions?
I used Project/ProjectOptions/ConfigAndTarget and:
set Target CPU family = arm
set Target processor =
> On Sep 8, 2020, at 6:10 PM, James Richters via fpc-pascal
> wrote:
>
> I'm trying to figure out how TList works. I found the code example below by
> doing a search, but I can't compile it, I get Error: Illegal qualifier on
> the line
Do you want an array of pointers (objects
What’s the difference between TList and TFPGList? Which one is better for this
example?
James
From: fpc-pascal On Behalf Of Vojtech
Cihák via fpc-pascal
Sent: Tuesday, September 8, 2020 10:29 AM
To: FPC-Pascal users discussions
Cc: Vojtěch Čihák
Subject: Re: [fpc-pascal] TFPObjectlist
On 08/09/2020 16:13, Bo Berglund via fpc-pascal wrote:
> This happened also after I ran a Run/CleanUpAndBuild operation, so
> clearly there is something I am missing here.
Is your FPC installation itself also built for ARMv6? (rtl and packages)
Jonas
Thank you for the help, I'll give it a try!
James
-Original Message-
From: fpc-pascal On Behalf Of Jean
SUZINEAU via fpc-pascal
Sent: Tuesday, September 8, 2020 8:47 AM
To: fpc-pascal@lists.freepascal.org
Cc: Jean SUZINEAU
Subject: Re: [fpc-pascal] Help with TList example
Another way
On Tue, 8 Sep 2020, James Richters via fpc-pascal wrote:
Yes 10 was too short, I made it larger and larger until it worked. 1000 was
the lowest value that worked so I set it to 2000, that's still quite a bit
faster than the default.
If I make a mistake in the link but the server IP
Yes 10 was too short, I made it larger and larger until it worked. 1000 was
the lowest value that worked so I set it to 2000, that's still quite a bit
faster than the default.
If I make a mistake in the link but the server IP address is correct, I get a
valid connection but then it fails and
>Bo,
>
>Most of the users on this forum have never interfaced with hardware , as
you
>can see from the responses. Those who have interfaced with hardware have
>developed circular buffers which they know work , and they reuse them
again
>and again.
I did this about 10 years ago when working on a
On 07/09/2020 08:51, LacaK via fpc-pascal wrote:
> attached simple Lazarus compilable project (one Form).
>
> ...
> type
> String1250 = type AnsiString(1250);
>
> const
> c2: AnsiString = 'áéíóčž';
> c3: WideString = 'áéíóčž';
> c4: String1250 = 'áéíóčž';
>
> { TForm1 }
>
> procedure
On Tue, 8 Sep 2020 20:09:53 +0200, Jonas Maebe via fpc-pascal
wrote:
>On 08/09/2020 16:13, Bo Berglund via fpc-pascal wrote:
>> This happened also after I ran a Run/CleanUpAndBuild operation, so
>> clearly there is something I am missing here.
>
>Is your FPC installation itself also built for
I would like to create a buffer into which a thread can push incoming
data and the main thread can extract it for processing.
Data are coming from the serial port in a worker thread and should be
consumed by the main thread. The data is a byte stream.
Are there any good examples available?
I
Mattias Gaertner via fpc-pascal schrieb
am Di., 8. Sep. 2020, 22:32:
> On Tue, 8 Sep 2020 20:27:20 +0200
> Jonas Maebe via fpc-pascal wrote:
>
> > On 07/09/2020 08:51, LacaK via fpc-pascal wrote:
> >
> > > attached simple Lazarus compilable project (one Form).
> > >
> > > ...
> > > type
> > >
On Tue, 8 Sep 2020 20:27:20 +0200
Jonas Maebe via fpc-pascal wrote:
> On 07/09/2020 08:51, LacaK via fpc-pascal wrote:
>
> > attached simple Lazarus compilable project (one Form).
> >
> > ...
> > type
> > String1250 = type AnsiString(1250);
> >
> > const
> > c2: AnsiString = 'áéíóčž';
> >
James Richters via fpc-pascal schrieb am
Di., 8. Sep. 2020, 20:07:
> What’s the difference between TList and TFPGList? Which one is better
> for this example?
>
The main difference is that TFPGList ist a generic, thus when you
specialize it with your record you'll have a typesafe object where
27 matches
Mail list logo
