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  • 第12月第15天 mysqlx boost reswift

    1.

    INSTALL PLUGIN mysqlx SONAME 'mysqlx.so'

    https://yq.aliyun.com/articles/38288

    2. boost

            boost::shared_ptr< MySQL_Driver > newDriver;
    
            newDriver.reset(new MySQL_Driver(dummy));
            driver[dummy] = newDriver;
    
            return newDriver.get();
    ...
    MySQL_Driver::MySQL_Driver(const ::sql::SQLString & clientLib)
    {
        try {
            proxy.reset(::sql::mysql::NativeAPI::createNativeDriverWrapper(clientLib));
        }    catch(std::runtime_error & e)    {
            throw sql::InvalidArgumentException(e.what());
        }
    }
    ...
    /* {{{ createStMysqlWrapper() */
    NativeDriverWrapper *
    createNativeDriverWrapper(const SQLString & clientFileName)
    {
        return new MySQL_NativeDriverWrapper(clientFileName);
    }
    /* }}} */
    
    
    /* {{{ MySQL_NativeDriverWrapper::MySQL_NativeDriverWrapper() */
    MySQL_NativeDriverWrapper::MySQL_NativeDriverWrapper(const ::sql::SQLString & clientFileName)
        : api(::sql::mysql::NativeAPI::getCApiHandle(clientFileName))
    {
    }
    /* }}} */
    ...
    boost::shared_ptr< IMySQLCAPI > getCApiHandle(const sql::SQLString & name)
    {
    #ifdef MYSQLCLIENT_STATIC_BINDING
        return LibmysqlStaticProxy::theInstance();
    #else

    https://codeload.github.com/mysql/mysql-connector-cpp/tar.gz/1.1.9

    3.

    import UIKit
    
    class ViewController: UIViewController {
        var finishedCallBack: ( (dataString: String) -> () )?
        override func viewDidLoad() {
            super.viewDidLoad()
    
            //解决方式三: [unowned self]  跟 _unsafe_unretained 类似  
            loadData { [unowned self] (dataString) -> () in
                print("(dataString) (self.view)")
            }  
        }
    
        func method2() {
            //解决方式二:  在swift中 有特殊的写法  [weak self]
            loadData { [weak self] (dataString) -> () in
    
                //以后在闭包中中 使用self 都是若引用的
                print("(dataString) (self?.view)")
            }
        }
    
        func method1() {
            // 解决方式一: weak , OC中类似方法__weak
            weak var weakSelf = self
            loadData { (dataString) -> () in
                print("(dataString) (weakSelf?.view)")
            }
        }

    http://www.jianshu.com/p/42c09c4bf6de

    http://www.infoq.com/cn/articles/ios-arch-based-on-reswift-and-app-coordinator

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  • 原文地址:https://www.cnblogs.com/javastart/p/7524467.html
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