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Swift 编程语言入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mberOfSides = 7
var shapeDescription = shape.simpleDescription()
这个版本的 Shape 类有些重要的东西不在：一个构造器来在创建实例时设置类。使用 init 来创建一个。
class NamedShape {
var numberOfSides: Int = 0
var name: String
init(name: Str...
Asking the user for input until they give a valid response
...ses the likelihood of bugs in your system. What if you want to backport to 2.7 by changing input to raw_input, but accidentally change only the first input above? It's a SyntaxError just waiting to happen.
Recursion Will Blow Your Stack
If you've just learned about recursion, you might be tempted ...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...coming in the imminent 2.8 release. Those familiar with the library from 2.7 will notice that the library, from a usage perspective, has changed little. For example...
...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...m what I can say with my puny test cases, you are 82% mainstream
clang 2.7@x86_64-suse-linux
We like to think that:
..05 int has the size of pointers
but 'sizeof(int)==sizeof(void*)' is false.
..08 overshifting is okay
but '(1<<bits_per_int)==0' is false.
..09a minus shifts backwards
but ...
C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ks对象
源Excel：
生成的结果Excel：
5、工程源码下载：ExcelDemo.zip
1233|1234|1455|2067C++ 高速读写 EXCEL OLE COM
CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...服务程序，Internet上超过60％的DNS运行的是bind。Bind的最新版本是9.x，用的比较多的是8.x，bind 9有很多新特性，其中一项是根据用户端源地址对同一域名解析不同的IP地址，有了这种特性，能把用户对同一域名的访问，引导到不同...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...试时需要添加向连接的设备发送十进制值的功能，但当前版本的组件缺少该功能。 测试还表明，更改一些块名称将有助于不熟悉 BLE 的用户更容易访问它们。 此外，测试表明块中存在不必要的冗余，以及可以从单个块组成多个...
How to decide between MonoTouch and Objective-C? [closed]
...I have a decent little app going that, once compressed, gets down to about 2.7 MB (when submitting your app for distribution, you zip it - when apps are downloaded from the store, they're zipped - so when figuring out if your app is going to come in under the 10MB OTA limit, zip the sucker first - y...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...行meta标签所达到的效果啊，所以在安卓2.3(或许是所有2.x版本中)的自带浏览器中，对meta viewport标签进行覆盖或更改，会出现让人非常迷糊的结果。
七、结语
说了那么多废话，最后还是有必要总结一点有用的出来。
首先如果...
Python str vs unicode types
Working with Python 2.7, I'm wondering what real advantage there is in using the type unicode instead of str , as both of them seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?:
...