大约有 9,000 项符合查询结果(耗时:0.0122秒) [XML]

https://www.tsingfun.com/it/tech/1894.html 

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

... let 来定义常量, var 定义变量。常量值无需在编译时指定,但是至少要赋值一次。这意味着你可以使用常量来命名一个值,你发现只需一次确定,却用在多个地方。 var myVariable = 42 myVariable = 50 let myConstant = 42 Note gashero...
https://www.tsingfun.com/it/cpp/1254.html 

一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术

...->linker->manifest file->Generate manifest To Yes来自动创建manifest来指定系统和CRTassembly版本。 除了这样产生外部manifest file,还有embedded manifest信息可以被写到所生成二进制文件内 Set porperty->configuration properties->manifest tool->embed ma...
https://www.tsingfun.com/it/cpp/2052.html 

coinitialize失败,返回值是0x80010106 无法在设置线程模式后对其加以更改 ...

... CoInitialize指明以单线程方式创建。 CoInitializeEx可以指定COINIT_MULTITHREADED以多线程方式创建。 创建单线程方式COM服务器时不用考虑串行化问题,多线程COM服务器就要考虑。 在使用中,使用CoInitialize创建可使对象...
https://stackoverflow.com/ques... 

Is it safe to assume a GUID will always be unique?

..., for every cell in every person who has ever lived, there are 36 trillion UUIDs. You have about 10^14 cells in your body, and 106.5 billion people have ever lived. Or, 2.385 * 10^23 UUIDs for every cent in the US public debt. – new123456 Aug 11 '11 at 1:47 ...
https://www.tsingfun.com/it/tech/2260.html 

plsql 存储过程 事务 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...点,释放锁,丢弃所有未决数据改变。 7、回滚事务到指定保存点(ROLLBACK TO SAVEPOINT)回滚当前事务到指定保存点,丢弃该保存点创建后任何改变,释放锁。 8、当执行DDL、DCL语句,或退出SQL*PLUS时,会自动提交事务; ...
https://www.tsingfun.com/it/cpp/2110.html 

C++ stl stack/queue 使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...素类型,一个容器类型,但只有元素类型是必要,在不指定容器类型时,默认容器类型为deque。 定义stack 对象示例代码如下: stack<int> s1; stack<string> s2; stack 基本操作有: 入栈,如例:s.push(x); 出栈,如例:s.pop(); ...
https://www.tsingfun.com/it/cpp/2161.html 

socket网络编程中read与recv区别 - C/C++ - 清泛网 - 专注C/C++及内核技术

...read与recv区别1、read 与 recv 区别read 原则:数据在不超过指定长度时候有多少读多少,没有数据则会一直等待。所以一般情况下:我们读取数据都...1、read 与 recv 区别 read 原则: 数据在不超过指定长度时候有多少读多...
https://www.tsingfun.com/it/cpp/1447.html 

WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术

...CKET s, //需要设置套接字句柄 HWND hWnd, //指定一个窗口句柄, 套接字通知消息将被发到此窗口中 u_int wMsg, //网络事件到来ID,可以在WM_USER以上数值中任意指定一个值 long IEvent //指定哪些通...
https://stackoverflow.com/ques... 

Is there a unique Android device ID?

...r Blog entry that emmby's answer links to (namely, generating and saving a UUID#randomUUID()). There are many answers to this question, most of which will only work "some" of the time, and unfortunately, that's not good enough. Based on my tests of devices (all phones, at least one of which is not ...
https://stackoverflow.com/ques... 

How to Create Deterministic Guids

...s mentioned by @bacar, RFC 4122 §4.3 defines a way to create a name-based UUID. The advantage of doing this (over just using a MD5 hash) is that these are guaranteed not to collide with non-named-based UUIDs, and have a very (very) small possibility of collision with other name-based UUIDs. There'...