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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...相应的对象布局为：C041+C100+C041+C101 +C110。在V型继承中是不能直接从C110，即孙子类，直接转型到C041，即祖父类的。因为在对象的布局中有两份祖父类的实体，一份从C100而来，一份从C101而来。编译器在决议时会存在二义性，它不...
MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...条消息就发送上千条采集的数据，或者比较大的设备阴影文件。技术挑战TCP需要解决的问题是在IP包传输过程中，处理异构网络环境下的网络拥塞、丢包、乱序、重复包等多种问题。MQTT解决的问题是，在低带宽高延迟不可靠的网...
How do popular apps authenticate user requests from their mobile app to their server?
...s that can change the behavior of the system and apps without touching any APKs. That's great because it means that modules can work for different versions and even ROMs without any changes (as long as the original code
In a device the attacker controls he can also use a proxy to perform a Man in t...
How to build an android library with Android Studio and gradle?
... it will allow me to specify the version name and code when generating the APK.
build.gradle
apply plugin: "android"
android {
compileSdkVersion 17
/*
defaultConfig {
versionCode = 1
versionName = "0.0.0"
}
*/
}
Something we are...
How do I get the current GPS location programmatically in Android?
...="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button android:id="@+id/btnShowLocation"
android:layout_width="wrap_cont...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...在VC找寻其定义，你会发现它其实是unsigned short*，然而它不能像普通的字符串指针char*一样可以直接赋值，而必须使用SysAllocString来分配，用SysFreeString来释放。
另外，又有两个BSTR的包容类_bstr_t和CComBSTR，它们是为了编程者使用BS...
mfc里面的140种颜色宏 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ine CLR_BLACK RGB( 0, 0, 0) // 纯黑
完整.h文件下载：ColorDef.zip
mfc 颜色宏
Handling click events on a drawable within an EditText
...f-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/myTextView"
android:layout_width="wrap_content"
android:layout_...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...e with each version’s image files, and provide all of the images in your APK file. The device then chooses the correct set at runtime. This is the system used in the Eclipse and Android Studio compilers.
We decided that creating multiple UI designs on the Google Eclipse/Android Studio model, is...
Why cast unused return values to void?
...
@CiroSantilli巴拿馬文件六四事件法轮功: .... that is an interesting question. Currently, I don't know the answer to that. Please shared with me if you get know it anyhow.
– Nawaz
Jul 25 '16 at 9:08...