摘要： publicsealedclassSingleton<T>whereT:new()...{privatestaticTinstance=newT();privatestaticobjectlockHelper=newobject();privateSingleton()...{}publicstaticTGetInstance()...{if(instance==null)...{lock(lockHelper)...{if(instance==null)...{instance=newT();}}}returninstance;}} 阅读全文