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tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...cept的时候获取listener自旋锁并出队连接，最后通过VFS虚拟文件系统分配文件描述符后返回。
SO_REUSEPORT和SO_INCOMING_CPU
REUSEPORT: 每个listener只有一个accept队列， reuseport通过多个不同的socket文件描述符 listen在同一个地址端口，增...
Copy/duplicate database without using mysqldump
...ble = mysql_query("CREATE DATABASE `$newDbName` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;") or die(mysql_error());
foreach($tables as $cTable){
$db_check = @mysql_select_db ( $newDbName );
$create = $admin->query("CREATE TABLE $cTable LIKE ".$dbName."....
How do I print the type or class of a variable in Swift?
... // "Swift.Int"
println(Bool.self) // "Swift.Bool"
println([UTF8].self) // "Swift.Array<Swift.UTF8>"
println((Int, String).self) // "(Swift.Int, Swift.String)"
println((String?()).dynamicType)// "Swift.Optional<Swift.String>"
println(NSDate) ...
How to make an HTTP request + basic auth in Swift
...sername, password)
let loginData = loginString.data(using: String.Encoding.utf8)!
let base64LoginString = loginData.base64EncodedString()
// create the request
let url = URL(string: "http://www.example.com/")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Basic \(...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...时，ZMQ版本已经升级到4.1.0，不过影响没多大
2）解压源文件
tar zxf zeromq-4.0.3.tar.gz
3）进入zmq目录并进行编译和安装：
cd zeromq-4.0.3
./configure
make
make install
4）现在开始使用zmq进行网络通信
4.1接收端代码
//包含zmq的头文...
How should I store GUID in MySQL tables?
...ing said value with a value mapped from a lookup table (in most cases now, UTF8). A BINARY field expects the same kind of value without any intention of representing said data from a lookup table. I used CHAR(16) back in the 4.x days because back then MySQL wasn't as good as it is now.
...
iOS: how to perform a HTTP POST request?
...String *responseText = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding];
// Do anything you want with it
[responseText release];
}
// Handle basic authentication challenge if needed
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:...
MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ist对象中添加位图和图标资源，其资源可以是程序中资源文件中的资源，也可以直接从外部文件调入。
（1）从程序中资源文件中添加图标和位图图像如下所示
// 创建一个CImageList类的指针变量
CImageList* pImageList;
pImageList =...
C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...l stack/queue 的使用方法1、stackstack 模板类的定义在<stack>头文件中。stack 模板类需要两个模板参数，一个是元素类型，一个容器类型，但只有元素类型是必要的...1、stack
stack 模板类的定义在<stack>头文件中。
stack 模板类需要两个...
PDO closing connection
...
PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8mb4 COLLATE utf8mb4_general_ci",
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
)
);
} catch (PDOException $e) {
...