Search found 21 matches

by glennj.0158
Tue Feb 15, 2022 1:07 pm
Forum: Coding Questions
Topic: Numerical Methods Question
Replies: 6
Views: 694

Re: Numerical Methods Question

And I figured out which tyro mistake I was making -- -1 * A + B <> -1 * (A + B)

This is a demonstration of the "Coat Rack" effect. The process of describing the problem to others forces one to think clearly about the problem in order to articulate it. I doesn't matter if the "others" understand the ...
by glennj.0158
Tue Feb 15, 2022 3:33 am
Forum: Coding Questions
Topic: Numerical Methods Question
Replies: 6
Views: 694

Re: Numerical Methods Question

Did some more poking around and the issue is multiplication by -1
The same code snippet multiplying by 1 gives correct results across the board.
by glennj.0158
Tue Feb 15, 2022 3:28 am
Forum: Coding Questions
Topic: Numerical Methods Question
Replies: 6
Views: 694

Numerical Methods Question

I've got a really odd numerical result that I can't explain. Look at the following code snippet -- you can copy and run and you will get the MesageRequester message to see the results.
f1.d = 325.0
f2.d = 0.125
f3.d = f1 + f2
f4.d = f1 + 1.0 / 8.0
f5.d = -1 * f1 + 1.0 / 8.0
f6.d = -1.0 * f1 + (1.0 ...
by glennj.0158
Mon Feb 14, 2022 2:19 am
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

Thanks for the catch on Temp vs iTemp. This code fragment was extracted from a larger unit and then simplified to show the structure of the problem.

Also thanks for your snippet. I'm in the process of figuring out how this works.

-Glenn
by glennj.0158
Mon Feb 14, 2022 12:44 am
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

2D graphics - When do things happen

I'm working on a program which displays a quilting block part by part. I think the code below should create a window, project a black background,
and display 6 squares on the diagonal with a one-second delay between squares. What I get is a grey window with banner and nothing else.

I copied the ...
by glennj.0158
Wed Feb 09, 2022 2:40 am
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

Thanks all for the help. I got the gadgets into the order I wanted and life is good.

On a more philosophical note -- I use the Form Designer tool when I'm starting a new language or using new project tools to get a feel for the mechanical requirements. This get me to "something that works". I ...
by glennj.0158
Tue Feb 08, 2022 3:39 am
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Field order on a form -- how to fix what the IDE gave

OK - I have a new burning question.

I used the IDE to create a simple form with 6 fields and two buttons. The fields 1-5 run down the left margin, field 6 is to the right of 5 and the buttons are on the bottom.

I expected the progression to be F1 - F2 - ... F5 - F6 - B1 -B2 and back to F1

i Get ...
by glennj.0158
Sat Feb 05, 2022 6:43 pm
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

Thanks mk-soft, a much more involved response than expected!

I've just gotten onto GitHub to get the SQLite tools. I agree this is the best long-term solution.

If the quilting utilities actually become ready for prime time I will post them there.

Until/unless I migrate you get credit for the ...
by glennj.0158
Sat Feb 05, 2022 6:38 pm
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

Thank you Bitblazer for the invite.
by glennj.0158
Sat Feb 05, 2022 3:14 pm
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

I've downloaded Discord but it looks like I need an invite to the PB community server.

Glennj.0158 is my Discord handle

Regards
Glenn
by glennj.0158
Sat Feb 05, 2022 2:53 pm
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Re: Linear Programmer looking for a clue

Thank you both (and others who may follow) for the assist. I did find and am already reading the survival guide and will pick up and read the other references. I will have to look at the JSON as this looks like a workable short-term solution but I agree that using a DBMS to pick up the slack is a ...
by glennj.0158
Sat Feb 05, 2022 3:22 am
Forum: Coding Questions
Topic: Linear Programmer looking for a clue
Replies: 24
Views: 3363

Linear Programmer looking for a clue

Hi all -- I''m an embarrassed old fart. Began programming in the '60s and worked with linear languages like Fortran and COBOL with a little C and several more obscure languages thrown in. While I understand the conceptual basis for event-driven programming I have zero experience.

I'm looking for a ...
by glennj.0158
Wed Apr 29, 2020 2:40 am
Forum: Feature Requests and Wishlists
Topic: multiple assignment
Replies: 28
Views: 8706

Re: multiple assignment

Remember, you can return a structure or modify the called parameters using @x,@y,@z.

I tried passing an address as an argument and it didn't work as I expected. I posted the question and the overall answer was that PureBasic does not support indirect reference and you would need to use the Poke ...
by glennj.0158
Wed Apr 29, 2020 2:32 am
Forum: Coding Questions
Topic: Basic Pointer Problem -- Pointer treated as simple variable
Replies: 7
Views: 1753

Re: Basic Pointer Problem -- Pointer treated as simple varia

Hi all

What I'm trying for is Call-By-Reference, where the address of an external variable is passed into the procedure and the procedure acts directly on the external variable.

What I was expecting to happen was that by defining *c.Point I would pass the address of the external variable into the ...
by glennj.0158
Mon Apr 27, 2020 10:36 pm
Forum: Coding Questions
Topic: Problem vector printing text
Replies: 5
Views: 1572

Re: Problem vector printing text (Resolved)

There were two problems:

Missing call to StopPrinting() -- This causes the print queue to be improperly closed causes some print problems.

Call to VectorSourceColor (#Black) -- I assumed this would give black text. I have no idea what it actually does
but when I removed it the printing magically ...