[JPR]
Hi Guys,
I hope your health is as good as mine!
I got several questions from US developers, telling me: You're a lot on 4D
Forum (discuss.4d.com) and ou don't talk on the NUG anymore"
So I would like to give you a global answer:
- First of all, I read the NUG every day, and I answer alwa
[JPR]
Hi Guys,
Just a short message to thank all of you who were a bit worried about my
silence. Thanks John, Paul, Dave, and all the others, it's very kind of you to
care about dinosaurs ;-)
Don't worry, I'm perfectly safe and alive! I didn't get the Corona virus, nor
the Dos Equis virus, an
...@gmail.com>
> Content-Type: text/plain; charset=us-ascii
>
> Or use a mirror. Highly recommended if the database is important...
>
>> On Oct 28, 2019, at 12:59 PM, JPR via 4D_Tech <4d_tech@lists.4d.com> wrote:
>>
>> The only 100% accurate way is to r
[JPR]
Hi Justin,
Tim's explanation is the good one. When 4D starts flushing the cache, it writes
a flag into the .4DD file, and clears it when the flush is complete.
Here are some answers:
> Are you sure the marker is stored in the data file?
Yes, I do.
> If I restore a backup from Time Machi
[JPR]
Hi Guys,
Once upon a time, in a magic computer, a lovely virtual princess was waiting in
a cooperative process for a strong and handsome virtual prince to awake her...
Unfortunately, the prince was a cooperative one and he was waiting for the door
to open, and the key was held by the pri
[JPR]
Hi Jörg,
Kirk is right, the WEDD resource stands for Wedding, and it was just a resource
used to open the proper data file when starting a structure file, there is
nothing mysterious about it. The WEDD resource has been removed in 4D 2004, 15
years ago. It's only use was to mary a 4DB wi
[JPR]
Hi Keith,
a) It seems that there is some fuzziness in the way Entity Selections and
Collections are understood. Let's try to make it more precise:
- An Entity selection doesn't 'contain' the Entities, it's a List of Entity
References (in this case, a reference is a 4D internal référence
> Date: Fri, 15 Feb 2019 14:49:25 -0600
> From: Tim Nevels
[JPR]
Hi Tim,
> I am definitely attending the Chicago 4D World Tour. I’ve attended all the 4D
> World Tours that have been offered and attended every JPR presentation. I’ve
> been to every 4D Summit since 1991 except for one — I had a
[JPR]
Hi Guys,
Thanks! And thanks again! You are really interested, and you don't trust
something without testing!
As Russian say: Доверяй, но проверяй. Trust, but verify. So you have been a lot
to try my little test, and I've received a pack of mails like:
Dear Uncle JPR,
i don’t know what
[JPR]
Hi Guys,
As usual, I've again received a lot of mails, from USA and the rest of the
World, asking me if it's important to attend the WT2019, so once again, I've
decided to do a global answer. All of the questions end with the same
subliminal question: Does it worth it? Will we learn some
[JPR]
Hi Dave, Tim,
This kind of crash is always difficult to track down, for it is not easily
reproductible. From what I see (and as Tim pointed) it seems there is a memory
problem that is revelated in the process LabProjects List. But a memory problem
can occur a while before the actual cras
[JPR]
Hi Pat,
Yes, I did write the Label Editor long time ago.
But no, I don't have the slightest idea regarding this problem :-(
Anyway, if it's a problem in V13, it should have arisen years ago, and I
received no complains regarding this splendid jewel of a code used
enthusiastically b
[JPR]
Hi All,
In fact, it seems that it has been a little misunderstanding in this case of
XML Structure. What LR was talking about is the NEW way which has been
demonstrated by Laurent Esnault during the Summit.
With the new way of handling the 4DB (usually named 'the structure'), it will
be
[JPR]
Hi Tim,
> JPR does monitor the list, maybe he knows more about this and could comment.
Yes Tim, this is true, I do monitor this list.
So do not hesitate to put 'JPR' in your message when you have questions still
pending after some weeks of reflexion... When I don't have the answer, I ha
[JPR]
Hi Jörg,
Long time ago (maybe 20 years ago...), I wrote a 4D routine (not a plug-in)
which was building a PICT in a BLOB, with QuickDraw pure code imbedded into a
PICT.
This doesn't work anymore since we had to say 'Goodbye an Thanks a lot' to
QuickDraw.
This is why I've given a replac
[JPR]
Hi Guys,
Recently I've received a lot of mails, from USA, Germany, France, etc. asking
almost the same questions, so I've decided to do a global answer. Basically,
the question looks like "I'm very busy, and I just would like to know if it's
it worth it, to spend one day dedicated to this
[JPR]
Hi Tim,
> It’s so big that Laurent Ribardière himself will be there with JPR to talk
> about it.
This is true. It's that big. Probably bigger than that. Plus obviously the
usual lot of new tools and features.
IMHO, it's the biggest improvement in 4D since Client-Server and Multi Process
[JPR]
Hi Guys,
The exact thing that I've explained was how to use objects to get Associative
Arrays in 4D. Associative Arrays are widely used in other languages like PHP or
JavaScript.
In computer science, an Associative Array is an abstract data type composed of
a collection of (key, valu
[JPR]
Hi David,
> "Yes, 4D should trap for bad code coming into a worker and report it in a
> way that the developer can manage. 4D should not silently destroy the
> worker, lose its context, and restart it without reporting the error."
>
> If you agree, we have no dispute.
So let's have no disp
[JPR]
Hi David,
> I find it deeply disturbing that a representative of 4D France somehow
> thinks that basic error checking is a weird thing to worry about
I just would like to correct this:
- I'm not a representative of 4D France, just a contractant.
- I do not talk in the name of 4D in gener
[JPR]
Hi David,
It seems that we do not have the same way to see Workers. You are right on what
you say. But I'm not sure this is the most important, when we talk about new
things like Workers. Here are my thoughts:
- Concept of Workers is very new in V16, you know that you can expect
improve
[JPR]
Hi David,
I'm not sure about this topic... About what do you try to demonstrate...
> I did it on purpose to see what happens. I'm fanatical about checking
> inputs and preconditions and wanted to see what sort of error to trap for.
> In many cases, there is no error trapped - it just screw
[JPR]
Hi Doug,
There was no 'leak' here. Gestalt is a very old 4D function, already existing
in 4D V6. And I said it was just a temporary implementation until PROCESS
PROPERTIES has been updated to take in account the Preemptivity property.
My very best,
JPR
> On 06 May 2017, at 21:03, 4d_t
[JPR]
Hi David,
> Also, I tend to make a strong argument, but don't take it the wrong way!
David, I know you for a long time now, and I know how much you have been
involved in 4D since, and still are. I know (for I read the NUG) that you spend
a lot of time helping others on the NUG by providin
[JPR]
Hi David,
What I mean is just that I feel nothing obvious when manipulating Objects.
Every single operation you can do on objects becomes not trivial at all, if you
compare with variables 4D Developers are accustomed to use. Some examples :
- Comparing objects: Will you compare structure
[JPR]
In my previous message, I forgot to indicate that this component can use 3
different ways to represent an object:
- As a Styled Text
- As a Hierarchical List (with pictures or not)
- As a ListBox (with all the possibility to edit, modify, create hierarchies,
enter data, etc.)
And yes, yo
[JPR]
Hi Guys,
The code regarding a way to display/edit an object has been put into a
component.
This component is supplied as a part of the World Tour Training, (obviously
with the source) and all explanations are given, with the How to use it during
the 1st day, and How to understand it dur
[JPR]
Hi Jim,
The component has been made with 4D V16, this is why you can't use it with V15.
My very best,
JPR
> Date: Wed, 12 Apr 2017 13:14:12 -0400
> From: Jim Medlen
> To: <4d_tech@lists.4d.com>
> Subject: 2017 World Tour Component
> Message-ID:
> Content-Type: text/plain; charset="ISO
[JPR]
Hi Guys,
I've got some demands to described a little bit more what is going to be the
content of the World Tour 2017's Training day. Some developers would like
(probably) to know if they will not lose time and money to come and listen to
JPR's speech once more time...
Most of the topic
[JPR]
Hi Wayne,
In fact, there is a solution, suggested by Vincent de Lachaux, the author of 4D
SVG Component. You can use the component method SVG_New_textArea, this command
does the job, by using a specific tag instead of the CR. Have a look
on the 4D SVG documentation, it may help you to s
[JPR]
Hi Wayne,
This is NOT a simple operation, for a single SVG element creates a
single line of text. It does not, AFAIK, have any way cutting text to a new
line. CR or LF do not work. neither. Have a look at:
https://www.safaribooksonline.com/library/view/svg-text-layout/9781491933817/ch0
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