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507问题求助 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
各位大佬们帮我看看为什么我的app会出现蓝牙无法连接问题，我是根据其他人的逻辑设计做下来的，但是我的手机连接不上蓝牙模块，会显示507问题
View/edit ID3 data for MP3 files
...
Thirding TagLib Sharp.
TagLib.File f = TagLib.File.Create(path);
f.Tag.Album = "New Album Title";
f.Save();
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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...n 拓展：人脸标记识别
【AI模型】LookExtension 拓展：使用编译到扩展中的神经网络进行物品识别
UI界面
【UI】NotificationStyle 拓展：个性化通知栏样式
【UI】WordCloud 拓展：免费且酷炫的词云效果
【UI】Bubbl...
Upgrade python in a virtualenv
...ers for both python versions (2.7.x and 2.7.y packages are inside your_env/lib/python2.7/).
If you change your virtualenv python version, you will need to install all your packages again for that version (or just link the packages you need into the new version packages folder, i.e: your_env/lib/pyt...
What are .a and .so files?
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Archive libraries (.a) are statically linked i.e when you compile your program with -c option in gcc. So, if there's any change in library, you need to compile and build your code again.
The advantage of .so (shared object) over .a...
Is it possible to get CMake to build both a static and shared version of the same library?
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Yes, it's moderately easy. Just use two "add_library" commands:
add_library(MyLib SHARED source1.c source2.c)
add_library(MyLibStatic STATIC source1.c source2.c)
Even if you have many source files, you would place the list of sources in a cmake variable, so it's stil...
MySQL table is marked as crashed and last (automatic?) repair failed
...an:
sudo service mysql stop
Go to your data folder. On Debian:
cd /var/lib/mysql/$DATABASE_NAME
Try running:
myisamchk -r $TABLE_NAME
If that doesn't work, you can try:
myisamchk -r -v -f $TABLE_NAME
You can start your MySQL server again. On Debian:
sudo service mysql start
...
Exclude a directory from git diff
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You can try and unset the diff attribute for any files within the lib directory.
.gitattributes:
lib/* -diff
racl101 adds in the comments:
Just to add to this, for those of you who want to limit the git diff output of files of a specific type, within a specific directory and its su...
boost::filesystem指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...c_filesystem_error异常，当然并不是总会抛出异常，因为在库编译的时候可以关闭这个功能。同时有两个函数提供了无异常版本，这是因为在任务不能完成时并非是异常。
filesystem库的所有内容定义在boost名字空间的一个下级名字空...
JavaFX and OpenJDK
...tps://openjfx.io. This includes instructions on using JavaFX as a modular library accessed from an existing JDK (such as an Open JDK installation).
The open source code repository for JavaFX is at https://github.com/openjdk/jfx.
At the source location linked, you can find license files for open...