Search found 80 matches
- Tue Oct 13, 2020 5:31 pm
- Forum: C/C++
- Topic: questions to libs having a .h file and a .c file
- Replies: 48
- Views: 1779
Re: questions to libs having a .h file and a .c file
Alas, there are some inconveniences to this approach. For instance, I read that if your code is in single compilation unit, GCC can optimize your code better by 10-15% (CITATION NEEDED, but still conceivable). Do you mean this? -fwhole-program Assume that the current compilation unit represents the...
- Tue Oct 13, 2020 4:20 pm
- Forum: C/C++
- Topic: questions to libs having a .h file and a .c file
- Replies: 48
- Views: 1779
Re: questions to libs having a .h file and a .c file
Also, out of other reasons of not including .c files, if you're building a bigger project, you'll start noticing that build times get longer and longer. Split that into separate source files, use GNU make (or cmake or ninja or bazel, whatever you like) to compile your project. What will happen is th...
- Tue Oct 13, 2020 4:11 pm
- Forum: C/C++
- Topic: questions to libs having a .h file and a .c file
- Replies: 48
- Views: 1779
Re: questions to libs having a .h file and a .c file
Just avoid putting code in header files. Oh boy... Thing is "header only libraries" are a big thing that many people do on purpose. Especially in the C++ world. The Top 137 Header Only Open Source Projects: https://awesomeopensource.com/projects/header-only And: https://subscription.packt...
- Tue Oct 13, 2020 2:15 pm
- Forum: Networking and servers
- Topic: Cannot ping
- Replies: 5
- Views: 383
Re: Cannot ping
That was it <3
- Mon Oct 12, 2020 11:12 am
- Forum: Networking and servers
- Topic: Cannot ping
- Replies: 5
- Views: 383
Re: Cannot ping
That's a good suggestion, but I would anyway like to discover what was the problem in the aforementioned setup. This has to have something to do with RPi, as packages reach it, but it doesn't respond.
- Mon Oct 12, 2020 12:04 am
- Forum: Networking and servers
- Topic: Cannot ping
- Replies: 5
- Views: 383
Cannot ping
I had a problem, that my home wifi router is situated just on the other end of my house than my desk and connectivity is really low. However I really wouldn't like to have a long cable that goes through whole house, and thus I thought that I might put my RPi 4 in my room (on the other end, where the...
- Sat Aug 22, 2020 5:04 pm
- Forum: Python
- Topic: is it possible to compile a Python program into an executable ?
- Replies: 30
- Views: 1680
Re: is it possible to compile a Python program into an executable ?
On the other hand cython and numba, which are not mentioned, have been very fast - faster than my C on occasion. But they still need to be run using python and the code generally needs to be converted quite a bit. Cython can and does create standalone native executables as described earlier; it is ...
- Fri Aug 21, 2020 12:18 pm
- Forum: Python
- Topic: is it possible to compile a Python program into an executable ?
- Replies: 30
- Views: 1680
Re: is it possible to compile a Python program into an executable ?
but they all come with some caveats, that were already mentionedsatineeraj wrote: ↑Fri Aug 21, 2020 4:09 amYes you can compile the Python Code through the compilers check best Python Compilers here:http://www.techgeekbuzz.com/best-python-compiler/
- Tue Aug 18, 2020 4:16 am
- Forum: Python
- Topic: is it possible to compile a Python program into an executable ?
- Replies: 30
- Views: 1680
Re: is it possible to compile a Python program into an executable ?
The .pyc files are generated automatically, they land in directory __pycache__ (unless you disable it by env variable). So if you run your code multiple times, withouth changing, the first run will generate the byte code and each subsequent will detect the existence of cache and load from there.
- Tue Aug 18, 2020 12:40 am
- Forum: Python
- Topic: is it possible to compile a Python program into an executable ?
- Replies: 30
- Views: 1680
Re: is it possible to compile a Python program into an executable ?
Besides which, can't you just "compile" your Python code into .pyc files? Every Python script before running is compiled to .pyc file so this is a noop (unless you frequently remove the pyc files and rerun your script, which would be wasteless). And, of course, since they are compiled, th...
- Sun Aug 16, 2020 11:23 pm
- Forum: General programming discussion
- Topic: Binary search
- Replies: 12
- Views: 1033
Re: Binary search
I know that there are examples where simple linear scan is faster than a binary search. From my experience though, once your data set has about 100 elements, bsearch is really faster, especially since you're all taking about searching in arrays, while for me, when I actually used binary search, it w...
- Sun Aug 16, 2020 3:09 am
- Forum: Beginners
- Topic: Install base image onto SD card without monitor
- Replies: 4
- Views: 246
Re: Install base image onto SD card without monitor
Oh, that's actually really easy, I was expecting uncompressing some LZMA images that need to be compressed later on. That means maybe I'll stick to Raspberry Pi OS. Thanks for the helpful info <3
- Sun Aug 16, 2020 1:45 am
- Forum: Beginners
- Topic: Install base image onto SD card without monitor
- Replies: 4
- Views: 246
Install base image onto SD card without monitor
Hey, I'm planning on getting a RPI (the latest one specifically) and I thought of not buying microHDMI-HDMI cable. Is there some known method, so that I can build a Linux image (preferably Fedora, but at the end of the day, whatever) so that it 1) doesn't involve any installer, so the stuff I put on...
- Sun Aug 16, 2020 1:36 am
- Forum: General programming discussion
- Topic: Binary search
- Replies: 12
- Views: 1033
Re: Binary search
Interesting. I guess for that to be useful you need your arrays to be sorted before you start. Which might be a lot more processing time that the search itself. Or perhaps one always keeps ones arrays sorted by using the binary search to find the insertion point for new items and moving things afte...
- Mon Jan 04, 2016 6:45 pm
- Forum: Python
- Topic: Detect keypress using Python
- Replies: 8
- Views: 66169
Re: Detect keypress using Python
Try something like that - https://stackoverflow.com/questions/240 ... -in-python
- Mon Jan 04, 2016 2:43 pm
- Forum: C/C++
- Topic: GPIO and serial IF programming with C language
- Replies: 3
- Views: 960
Re: GPIO and serial IF programming with C language
Try with this - without redundant overhead:
http://www.pieter-jan.com/node/15
http://www.pieter-jan.com/node/15
- Sun Jan 03, 2016 6:25 pm
- Forum: Python
- Topic: ImportError: cannont import name 'IncompleteRead'
- Replies: 1
- Views: 501
Re: ImportError: cannont import name 'IncompleteRead'
Try
If there's no "easy_install-3.5", use that which matches your Python version.
Code: Select all
sudo apt-get remove python3-pip
easy_install-3.5 pip- Sun Jan 03, 2016 6:18 pm
- Forum: Python
- Topic: hcm5883l split the data
- Replies: 9
- Views: 1386
Re: hcm5883l split the data
If that's a string, you can use split:
Code: Select all
list(map(lambda p: float(p.split(' ')[1]), string.split('\n')))- Sat Jan 02, 2016 2:42 pm
- Forum: Python
- Topic: Calling app from within app
- Replies: 4
- Views: 1022
Re: Calling app from within app
Of course it is possible. But if the latter one is made with Python too, you could create module with it:
https://docs.python.org/3/tutorial/modules.html
https://docs.python.org/3/tutorial/modules.html
- Sat Oct 10, 2015 7:11 pm
- Forum: Other programming languages
- Topic: Posting a data on a Html page
- Replies: 5
- Views: 1333
Re: Posting a data on a Html page
I would set up a Ruby Sinatra or NodeJS micro-service, that posts the data in processed form.
How do you collect the data?
Which programming language?
How do you collect the data?
Which programming language?
- Sat Oct 10, 2015 7:05 pm
- Forum: Other programming languages
- Topic: LISP on RPI?
- Replies: 6
- Views: 1949
Re: LISP on RPI?
sudo apt-get install clisp #? is that not lisp I've done that too, I was just curious if their was any fix for CCL because a lot of people seem to have chosen CCL for speed and efficiency. It looks like SBCL can be a compiler of choice for a big chunk of Common LISP community that is fast and produ...
- Sat Oct 10, 2015 7:01 pm
- Forum: General programming discussion
- Topic: Best way to get code onto pi
- Replies: 3
- Views: 1162
Re: Best way to get code onto pi
Maybe setup a Git server?
Give Gogs a try. You can leave it working on your Pi, and just sync changes on your desktop.
Give Gogs a try. You can leave it working on your Pi, and just sync changes on your desktop.
- Wed Aug 26, 2015 10:33 pm
- Forum: General programming discussion
- Topic: What Language to Use?
- Replies: 1
- Views: 684
Re: What Language to Use?
You mean a controller for your already built car, eh?
Go with Python.
Even though I'm a strong advocate of Ruby. It makes no sense to learn a new language for the sake of learning.
Go with Python.
Even though I'm a strong advocate of Ruby. It makes no sense to learn a new language for the sake of learning.
- Wed Aug 26, 2015 10:31 pm
- Forum: Polski
- Topic: Analogowe piny GPIO ?
- Replies: 1
- Views: 2124
Re: Analogowe piny GPIO ?
A kto wie?
Ale, skoro PRi idze do przodu, to czemu miałoby się cofać?
Ale, skoro PRi idze do przodu, to czemu miałoby się cofać?
- Thu Aug 20, 2015 10:35 am
- Forum: Other programming languages
- Topic: Announcing 8th for the Raspberry Pi!
- Replies: 20
- Views: 3677
Re: Announcing 8th for the Raspberry Pi!
Apart from the points raised before, which can be shorten to
,
where are the Docs?
,where are the Docs?