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Why should I avoid multiple inheritance in C++?
...ly, it was done for bad reasons, and it will blow back in the face of the maintainer.
Summary
Consider composition of features, instead of inheritance
Be wary of the Diamond of Dread
Consider inheritance of multiple interfaces instead of objects
Sometimes, Multiple Inheritance is the right thing. I...
How to copy files from 'assets' folder to sdcard?
...ssetManager.list("");
} catch (IOException e) {
Log.e("tag", "Failed to get asset file list.", e);
}
if (files != null) for (String filename : files) {
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open(filename);
...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...代码，代码清晰简练直达重点，所有代码均已亲测，大家可以放心直接用于自己的项目。
文件的打开方式一般是通用的，常用的方式如下：（如无特例后续各语言不再作描述）
"r" 打开只读文件，该文件必须存在。
"r+" ...
YouTube API to fetch all videos on a channel
...p;maxResults=20
After that you will receive a JSON with video ids and details, and you can construct your video URL like this:
http://www.youtube.com/watch?v={video_id_here}
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此诊断出现在编译器生成的函数“CGdiObject &CGdiObject::operator =(c...
出现此类问题是对象赋值导致，因为没有重载“=”赋值操作符。
由于不会提示具体错误行，因此需要仔细查看对象直接赋值的地方。
改为指针赋值就没有问题。
git command to show all (lightweight) tags creation dates
... fits my needs:
git log --tags --simplify-by-decoration --pretty="format:%ai %d"
I've put that command in an alias in my ~/.alias, so now everytime I run gitshowtagbydate I get what I needed.
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RegEx for matching UK Postcodes
... I can't get this to work in JavaScript. Does it only work with certain regex engines?
– NickG
Mar 27 '14 at 9:57
13
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What do column flags mean in MySQL Workbench?
In MySQL Workbench table editor there are 7 column flags available: PK, NN, UQ, BIN, UN, ZF, AI.
3 Answers
...
在app inventor中如果需要退出应用，需要调用哪句代码？ - App Inventor 2 ...
调用控制代码块中的“退出程序”代码块：
退出程序关闭应用程序。
注：只有在编译apk真机运行时，才能退出App，AI伴侣测试的时候无法退出AI伴侣程序。
WakeLock 拓展：保持App活动状态，不自动关屏 - App Inventor 2 拓展 - 清...
AI2 WakeLock Extension: Always stay active
来源：https://ullisroboterseite.de/android-AI2-WakeLock-en.html