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How expensive is RTTI?
...ime if you can afford to do
if (typeid(a) == typeid(b)) {
B* ba = static_cast<B*>(&a);
etc;
}
instead of
B* ba = dynamic_cast<B*>(&a);
if (ba) {
etc;
}
The former involves only one comparison of std::type_info; the latter necessarily involves traversing an inheritanc...
Best practices for Storyboard login screen, handling clearing of data upon logout
...ransitionWithView...];
– BFeher
Aug 21 '15 at 7:18
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Using vagrant to run virtual machines with desktop environment
... to start the GUI: sudo vim /etc/X11/Xwrapper.config and edit it to allowed_users=anybody.
Next, install the VirtualBox guest tools before starting the GUI. This will give you a healthy screen resolution, integrated mouse, etc.
$ sudo apt-get install -y xfce4 virtualbox-guest-dkms virtualbox-guest-u...
What is the best Distributed Brute Force countermeasure?
...
jameshjamesh
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How does the vim “write with sudo” trick work?
...
answered Feb 28 '18 at 18:21
Augustin RiedingerAugustin Riedinger
15.7k2020 gold badges9292 silver badges162162 bronze badges
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google chrome extension :: console.log() from background page?
... popup.js appear in background.js's console?
– steven_noble
Aug 18 '15 at 2:45
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What is the difference between MOV and LEA?
...ere:
http://www.oopweb.com/Assembly/Documents/ArtOfAssembly/Volume/Chapter_6/CH06-1.html#HEADING1-136
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Unbound classpath container in Eclipse
...roject file"
Install JDK1.5 from http://java.sun.com/javase/downloads/index_jdk5.jsp and see whether you can fix paths
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How to Store Historical Data
...ll active records will go in FOO, and all historical records will go in FOO_Hist. Many different fields in FOO can be updated by the user, so I want to keep an accurate account of everything updated. FOO_Hist holds the exact same fields as FOO with the exception of an auto-incrementing HIST_ID. E...
数据存储组件 · App Inventor 2 中文网
...AI伴侣的App目录，如果最终编译apk运行，则到 appinventor.ai_[账户名].[项目名] 目录下查看文件）
写入文件的参考代码如下：
生成的文件如下：
程序包 ：从应用程序包...