问题描述: github / sourcetree下载的Demo,很多时候使用到CocoaPods,有的时候因为依赖关系或者版本问题不能编译运行。出现例如The sandbox is not sync with the Podfile.lock问题时候,如下所示 diff: /../Podfile.lock: No such file or directory diff: Manifest.l
解决Re-download dependencies and sync project 问题描述 新建一个工程,报错 Error:Failed to open zip file.Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)<a hr
互斥锁 Mutex mutex 的 加解锁很简单: var mutex sync.Mutexmutex.Lock()defer mutex.Unlock()// 加锁期间的代码逻辑 加锁 // Lock locks m.// If the lock is already in use, the calling goroutine// blocks until the mutex i