lava | Live Asynchronous Visualized Architecture | Android library
kandi X-RAY | lava Summary
kandi X-RAY | lava Summary
LAVA is a tool to create general purpose native software while allowing every piece to be lock free and asynchronous. LAVA is designed to both significantly speed up development AND create signifcant amounts of lock free concurrency. It is written in C++11 and meant to potentially work with any language that can compile a shared library that exposes standard function calls. The building blocks are single file libraries with no dependencies other than the C++11 standard library.
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QUESTION
I have searched a lot for this topic and already found some approach but I get some errors I can't find the reason of it.
Idea is to read the keys from the enum with QMetaEnum to fill the strings in a combobox later.
I have already the enum and also setup Q_Object and Q_Enum Macro in the class where the enum is. But I am getting "undefined reference to 'Planet:: metaObject() const'" error message by using the QMetaEnum.
Here is the planet.h
...ANSWER
Answered 2021-Jun-11 at 16:05Including QMetaEnum
and deriving from QObject usually does the trick:
QUESTION
why my code does not read my specified keys from my enum.
The code itself compiles fine and the program runs without any runtime errors.
Header file with the enum:
...ANSWER
Answered 2021-Jun-12 at 16:15You're missing an important thing:
QUESTION
Hey don't really know how to phrase this question better but what i'm getting is basically the thing you see when you go out of bounds in any source games... And I think I found the code that causes it but I dont know why or how to fix it...
Anyways here's a picture of how it looks:
Here's the code bit that I think causes it:
...ANSWER
Answered 2021-May-23 at 07:11The self.display
Surface is created just once in the constructor and reused in every frame. Therefore you need to clear the self.display
Surface before drawing on it.
Use pygame.Surface.fill
to clear self.display
after you blit
it on the screen:
QUESTION
I'm working on a project which uses this C++ matplotlib wrapper matplotlibcpp.h.
A minimal example using this original header file is
...ANSWER
Answered 2021-May-18 at 17:53I don't have an easy access to a Linux where I can test it, but I think I now understand what's happening.
matplotlibcpp
uses a static variable to hold the Python interpreter (see line 129 insideinterkeeper(bool should_kill)
). Like C++ static function variables, it's initialized on the first time the function is called and destructed on program's exit (reference).When
main
finishes,libc
runs cleanup routines for all the shared libraries and for your program (that's__run_exit_handlers
in the stacktrace). Since your program is a C++ program, part of its exit handler is destructing all the static variables that were used. One of them is the Python interpreter. Its destructor callsPy_Finalize()
which is Python's cleanup routine. Until now, everything's fine.Python has a similar
atexit
mechanism that allows Python code from everywhere to register functions that should be called during the interpreter shutdown. Apparently, the backend matplotlib chose to use here is PyQt5. It seems to register such atexit callbacks.PyQt5's callback gets called, and crashes. Notice that this is internal PyQt5 code now. Why does this crash? My "educated" guess is that Qt's library exit handler was already called in step 2, before your program's exit handler was called. This apparently causes some weird state in the library (maybe some objects were freed?) and crashes.
This leaves two interesting questions:
How to fix this? The solution should be to destruct
ctx
before your program exits, so the Python interpreter is destructed before any shared libraries terminate themselves. Static lifetimes are known for causing similar problems. If changing matplotlibcpp's interface to not use global static states is not a possible solution, I think you really have to manually callplt::detail::_interpreter::kill()
at the end of your main function. You should be able to useatexit()
and register a callback that kills the interpreter before the library teardown - I haven't tested it though.Why did this ever work? My guess is that maybe something in PyQt5's callbacks has changed that now causes this crash, or that you use a different backend in Python 2. If no other library is destructively terminating before the program exits, this is fine.
QUESTION
I compile and work with mod for MC 1.7.10 in Idea without problem.
After put my mod into project: "Dark Matter" in AltLauncher it say that error java.lang.NoSuchFieldError: rock
In block class i write this constructor
...ANSWER
Answered 2021-May-06 at 18:54When you compile a Minecraft mod, you can either make a version with deobfuscated MCP names by doing ./gradlew jar
, or a version with obfuscated SRG names by doing ./gradlew build
. The former only works inside of development environments, and the latter only works outside of development environments. The error you got is consistent with trying to run a deobfuscated build outside of a development environment.
QUESTION
The problem
I am having a lot of difficulty using a known value within a function within dplyr
. The issue is with the following line. The rest of what follows it is just data that leads to the problematic component.
ANSWER
Answered 2021-Apr-13 at 20:41We could use group_modify
. However, I'm not sure if the outcome below is what you are looking for.
In a normal dplyr
pipeline we could use cur_data()
to access the data of each group. This is not possible here, because we are inside a non-dplyr function. For this case we have group_map
(which returns a list) and group_modify
(which returns a grouped tibble
as long as each output is a data.frame
). We can use a lambda function and here .x
is our grouped data.
QUESTION
Please help me find the error, Json lint throws this error
...ANSWER
Answered 2021-Apr-09 at 15:25You can use several online tools to validate your json like https://jsonformatter.curiousconcept.com/
QUESTION
I am currently coding a video game, and I want my div circle to stop once it has reached a certain area, say, 30, -30, I want it to stop, or give the user an alert. I have used a assortment of @keyframes, divs, getElementById, So and so forth. I have also created a board in which the ball moves around via keyboard. Oh, and before you see the code, just know I'm a young kid so sorry if the solution is simple. Here is my code so far:
...ANSWER
Answered 2021-Mar-24 at 04:31Add a function that validates the limits you need. I leave you an example of how it would be: In this case if it is in position 0,0 it makes an alert
QUESTION
I am currently trying to configure a bot
that sends a message based on a timer! Everything works perfectly and all I need to do now is send a message. I'm not to sure how to go about this however as it's not in an async function. I have searched online and looked at other stack overflow
posts to no avail so here I am. The code for the bot is as follows:
ANSWER
Answered 2021-Feb-24 at 07:15That line await.channel.send("Hello World")
is giving you an error because you have a .
between await
and channel
. You need to do await channel.send("Hello World")
.
QUESTION
I'm trying to learn code spigot plugins and i wanted to make simple world management plugin. First i want to say i'm very beginner at java.
Here is my code:
...ANSWER
Answered 2021-Feb-21 at 13:14With @RIVERMAN2010 big help i found the solution! First i didn't have break keyword and i didn't unload the world.
Here is the final code:
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