magnetic_field | Animated interactive magnetic field created for a freelance | Animation library
kandi X-RAY | magnetic_field Summary
kandi X-RAY | magnetic_field Summary
A rendition of a magnetic field. This was originally created for a freelance project. This version has been slightly modified for demonstration purposes.
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Trending Discussions on magnetic_field
QUESTION
I have a function in C++
code which I want to call from Python with ctypes
. The shared library (libRunaphys.so, I'm on Linux) contains a lot of other functions but I only need to use one function. The function is called advance_runaway_population()
and it is not part of any class. I wrote the following after the function descritptions in
control.cpp
...ANSWER
Answered 2021-Apr-18 at 16:55Here's a working example. the module_struct
std::string
values can't be generated in Python, so a wrapper structure with C types is used to pass from Python to C, and the extern "C"
function takes that wrapper class instance and converts it to a proper C++ class instance.
Also you don't have to wrap every parameter in a ctypes
type. ctypes
"knows" the wrapper type if .argtypes
are declared correctly.
for passing rate_values
, ct.byref(rate_values)
is equivalent to double(*)[4]
type. Don't use ct.byref
and the c_double * 4
array will be passed as ct.POINTER(double)
. this is similar to a C array decaying to a pointer as a parameter.
control.cpp:
QUESTION
I have created a Blank (or Master-Detail, or Tabbed - it doesn't matter) Xamarin.Forms project from the template. The project loads in Visual Studio, I try to run it in Debug mode (using Android_Accelerated_x86_Oreo(Android 8.1 - API 27)
) and it fails.
Here's the Output Window:
...ANSWER
Answered 2019-Mar-12 at 14:32This issue has nothing to do with Xamarin and if you would create a native Android application you will run into the same problem on Windows 10 machine.
It is a "bug" that is already reported to Google and Microsoft.
Seems to be a problem with user rights. Running the Visual Studio or the manually crafted command as Administrator should solve the issue.
QUESTION
My current problem is as soon as I try running ANY Android Virtual Device, it closes shortly after it starts. It never gets to a start screen, just black then closes.
I've tried switching from graphic mode auto to software.
I've tried creating a brand new AVD and wiping data of an older one.
I've ran android studios as admin, opened a admin cmd in windows and tried running the avd directly from the emulator exe (same results).
This is a brand new blank project from android studios.
I do NOT have docker installed, I also ensured VitrualBox is NOT running.
System: windows 10, i7, discrete GPU.
This is the results of trying to run the virtual device with -verbose from cmd prompt. I tried eliminating duplicate items.
...ANSWER
Answered 2019-Dec-18 at 14:54It seems I have fixed the problem. One of the following items fixed it. I did not do these one at a time, just all at once. So here is hoping this helps someone in the future.
Items I did that lead up to it being fixed.
- uninstalled graphic driver + installed newest update
- deleted .android folder (moved it to a new drive)
- turned off gpu + reboot + turned back on gpu + reboot
- deleted all AVD's and started a brand new one with a new device type and Android Q
- cleared all Android Studios cache files
It now works fine with default AVD config
QUESTION
I've being struggling with android emulator for three days now.
What I have done:
- Repo sync to get latest changes.
- Source build/envsetup to set up the environment
- lunch to select aosp_x86_64-eng target
- make -j16
- emulator -verbose -no-accel
That's my out:
...ANSWER
Answered 2019-May-06 at 15:05I was probable checked on a unstable code review. After checking on a stable branch, I've rebuilt and use the "emulator" again. It worked.
QUESTION
So I scraped different titles from a Wikipedia page, for example: https://en.wikipedia.org/wiki/Sun
I scraped all the mw-headlines
...ANSWER
Answered 2019-Apr-12 at 19:51Rather than converting the titles
iterable to a list, you can iterate over them and take the text element using the text
attribute on the tag:
QUESTION
ANSWER
Answered 2017-May-12 at 21:13Set skin
when launching emulator solve my problem! thanks to @CommonsWare for pointing me to the right direction.
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