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by yodermk
Mon Aug 01, 2016 2:01 am
Forum: C/C++
Topic: GUI
Replies: 2
Views: 983

Re: GUI

Qt is awesome. For something simple, or along the lines of a smartphone app type thing, you might want to look into Qt Quick, which uses a markup language for the UI and Javascript for the code. I've not used Qt Quick personally but that's pretty much what it's for.
by yodermk
Sat Jul 09, 2016 7:20 pm
Forum: Off topic discussion
Topic: Pine64+ a good deal?
Replies: 191
Views: 53803

Re: Pine64+ a good deal?

I just received a couple Pine64 boards this week. My summary: Has potential, and there's plenty to like about it, but right now I couldn't recommend it as an alternative to the Raspberry Pi for most people. The good: 2GB RAM, much faster ethernet. The bad: I recently got a Dell touchscreen monitor (...
by yodermk
Sat Jul 02, 2016 3:03 pm
Forum: General discussion
Topic: Request for next Raspbian update: Qt 5.7
Replies: 18
Views: 4650

Re: Request for next Raspbian update: Qt 5.7

It's impossible. Raspbian follows Debian. Debian has a conservative approach. Therefore Raspbian won't get a new version. The dependencies and all the mess it could make is unbelievable. If you want that version, it's in Debian stretch, which you could apt-get source or Arch. That's your only optio...
by yodermk
Sat Jul 02, 2016 12:57 pm
Forum: General discussion
Topic: Request for next Raspbian update: Qt 5.7
Replies: 18
Views: 4650

Re: Request for next Raspbian update: Qt 5.7

Is it possible to crowdsource testing to the community? If so that should get everything tested in short order. I'd help for sure. As for IoT I'm not exactly sure what he has in mind. I know that newer versions of Qt have more sensor support, but I think that might just work on Android and iOS. I'm ...
by yodermk
Fri Jul 01, 2016 6:59 pm
Forum: General discussion
Topic: Request for next Raspbian update: Qt 5.7
Replies: 18
Views: 4650

Re: Request for next Raspbian update: Qt 5.7

Qt tries very hard for binary backwards compatibility in the same major version (5.x), so *theoretically* (of course), there should be no breakage at all. Obviously, there should be a lot of testing with the apps in the repo that use Qt. Doing so thoroughly might be a pretty big undertaking, but the...
by yodermk
Fri Jul 01, 2016 1:38 pm
Forum: General discussion
Topic: Request for next Raspbian update: Qt 5.7
Replies: 18
Views: 4650

Re: Request for next Raspbian update: Qt 5.7

I get that Raspbian follows a stable OS with view version bumps, but it is its own operating system. It adds things, makes config changes, etc. I see no reason at all why it *couldn't* pull in a new Qt. Doing so would be a clear benefit to its users. Especially the virtual keyboard, which would be f...
by yodermk
Fri Jul 01, 2016 12:08 pm
Forum: General discussion
Topic: Request for next Raspbian update: Qt 5.7
Replies: 18
Views: 4650

Request for next Raspbian update: Qt 5.7

Not sure who to direct this to, but a post here may be a good start. Why not put Qt 5.7 in the next Raspbian release? Note especially the newly GPL'd Charts, Data Visualization, and Virtual Keyboard. I think these things could make a lot of aspiring Pi programmers very happy, and would allow deploym...
by yodermk
Thu Jun 16, 2016 10:52 am
Forum: C/C++
Topic: What is the best IDE for C++?
Replies: 17
Views: 6812

Re: What is the best IDE for C++?

I like QtCreator also, but have never run it on a Pi. I just wish it were easier to get the most recent version of Qt and its tools on the Pi ... QtCreator handles CMake projects all right. I would do that for non-Qt projects, but just use qmake for Qt projects. CMake isn't particularly intuitive, b...
by yodermk
Thu Jun 09, 2016 11:48 pm
Forum: Automation, sensing and robotics
Topic: Detecting a person's position on a sidewalk
Replies: 7
Views: 2054

Re: Detecting a person's position on a sidewalk

Thanks. I have no experience with OpenCV but could be interesting to try it.

Maybe 12 or so PIR sensors would be enough, but that might get a bit unweildly...
by yodermk
Wed Jun 08, 2016 10:47 am
Forum: Automation, sensing and robotics
Topic: Detecting a person's position on a sidewalk
Replies: 7
Views: 2054

Detecting a person's position on a sidewalk

Thinking of possible Halloween projects - having things with motorized turnable heads in my yard, which would turn to face (and track) people as they walk past my house and up to my front door. But to do that I need to know where people are on the sidewalks. There's of course the street sidewalk tha...
by yodermk
Mon May 30, 2016 4:33 pm
Forum: Teaching and learning resources
Topic: I am a new Programming Teacher who needs help!
Replies: 14
Views: 4878

Re: I am a new Programming Teacher who needs help!

I'm *all* for Raspberry Pi's, but in this case do you have existing computers in the classroom? It sounds like it. If that's the case I wonder what kind of value-add there would be to use RPi's. You can run Scratch, Python, and code.org stuff on any desktop. Unless you want to get into physical comp...
by yodermk
Sun May 29, 2016 1:45 pm
Forum: General discussion
Topic: Experimental 3D driver and Blender! (Pi 3)
Replies: 2
Views: 1297

Re: Experimental 3D driver and Blender! (Pi 3)

Wasn't even thinking of the Zero for this. Seems that the extra hassle of connecting so many Zeros would likely not be worth it -- and that assumes you'd be able to get enough of them!
by yodermk
Sat May 28, 2016 4:49 pm
Forum: General discussion
Topic: Experimental 3D driver and Blender! (Pi 3)
Replies: 2
Views: 1297

Experimental 3D driver and Blender! (Pi 3)

Congrats on the Raspbian update. Before this update, I could not use the experimental 3D driver. It just flaked out with my monitor and gave me a blank screen. Now it works! Even more interesting, I fired up the 3D modeler Blender. Without the 3D driver it was obviously unusable and some of the onsc...
by yodermk
Sat May 21, 2016 2:07 am
Forum: General discussion
Topic: Learning a New Programming Language
Replies: 40
Views: 5632

Re: New Programming Language

Problem with Javascript is that it is a truly horrible language that was thrown together almost thoughtlessly over the last 20 years. It is necessary for Web development, but that fact is a real tragedy. I sure wish browser vendors could standardize on something else. There are some projects working...
by yodermk
Fri May 20, 2016 12:07 am
Forum: General discussion
Topic: Shipment schedules(update?)
Replies: 22
Views: 3197

Re: Shipment schedules(update?)

I'm still really concerned whether this thing will ever be available in sufficient quantities. I'm sure you'll keep up with single-orders as long as there's a limit of one per person. But I want to order 10, and am waiting for that to be possible. It's hardly worth it to order just one, especially w...
by yodermk
Tue May 10, 2016 11:35 pm
Forum: C/C++
Topic: GUI related question
Replies: 3
Views: 965

Re: GUI related question

+1 for Qt and QtCreator - I love it! The only negative is that it can be a bit of a beast. Not that it's bad to use for simple programs, but maybe in this case a simpler option would be a good thing -- especially if the OP wants to stick to C instead of C++. In that case Gtk+ might be worth looking ...
by yodermk
Tue Apr 26, 2016 1:14 am
Forum: C/C++
Topic: any advantage for compiling by -std=c++11 ?
Replies: 13
Views: 2117

Re: any advantage for compiling by -std=c++11 ?

If you're compiling existing code, find out from the author which --std it requires, or try it with various options and see what works. If you're writing new code, you absolutely should be using --std=c++11 or better yet --std=c++14 when it's available on the Pi. It's a night & day better language. ...
by yodermk
Mon Apr 25, 2016 2:41 am
Forum: General discussion
Topic: Do Pi Zeros really exist?
Replies: 15
Views: 2893

Re: Do Pi Zeros really exist?

They've said they'll produce 50k a month, which seems woefully inadequate. That's only 600k/year, and I bet there's easily demand for 10 million. :(

I personally want to order 10. I probably wouldn't even bother for just one.
by yodermk
Sun Apr 24, 2016 5:50 pm
Forum: General discussion
Topic: Coding PI : Which programming language to use
Replies: 37
Views: 6871

Re: Coding PI : Which programming language to use

jahboater, Clearly C wins but I suspect C++ would be very close. It's better than that. C++ will generate exactly the same code as C. At least for the actual fibo() function. Right. I am a proponent of modern C++ for a lot of things, and what the OP is describing is likely a good application for it...
by yodermk
Sun Apr 24, 2016 2:56 am
Forum: C/C++
Topic: ***Installing gcc???? Please help ***
Replies: 17
Views: 2421

Re: ***Installing gcc???? Please help ***

I should add that I've not used either of those IDEs on the Pi yet. I suppose they would work all right on the 3.
by yodermk
Sun Apr 24, 2016 2:15 am
Forum: C/C++
Topic: ***Installing gcc???? Please help ***
Replies: 17
Views: 2421

Re: ***Installing gcc???? Please help ***

Python and C++ are radically different beasts. :) I gave a talk on Python compared to C++ at PyTexas last year, but it doesn't look like they got that video uploaded. :( I am a proponent of using C++, especially modern C++14. It's definitely *not* your father's C++. It's very powerful, but doesn't h...
by yodermk
Sun Apr 24, 2016 1:55 am
Forum: General discussion
Topic: Coding PI : Which programming language to use
Replies: 37
Views: 6871

Re: Coding PI : Which programming language to use

A program written in C will easily consume much less resources and run faster than a program written in bash or python. Is that what you mean?

Of course there are tradeoffs in complexity.
by yodermk
Fri Mar 04, 2016 2:05 am
Forum: C/C++
Topic: Learning C / C++
Replies: 38
Views: 5581

Re: Learning C / C++

Regarding C++ being too complex to master in a reasonable time, perhaps; but remember that it's designed so that you don't have to use every feature, and you don't pay for (in terms of performance and memory) what you don't use. If nothing else, you should use C++ style I/O and things like auto vari...
by yodermk
Sun Feb 28, 2016 9:34 pm
Forum: C/C++
Topic: Basic in c/c++
Replies: 3
Views: 1133

Re: Basic in c/c++

You probably don't want to use C++ for creating websites. It can be done but would be highly unusual. Go (golang) is probably a better choice as it has some built in libraries and tooling for back end servers. Otherwise, unless you really need high performance with thousands of users at once, Python...
by yodermk
Sun Feb 28, 2016 9:28 pm
Forum: C/C++
Topic: Learning C / C++
Replies: 38
Views: 5581

Re: Learning C / C++

I would first ask yourself why you would need plain C. If there is no good answer, please do yourself a favor and skip it and go straight to C++. Bjarne Stroustroup himself does not recommend learning C first. The only exception is if you really need C. And I think the only reason for needing C is i...

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