static void Main(string[] args)
{
var instance = SingletonSample.GetInstance();
instance?.Print();
Console.WriteLine("exit");
}
/// <summary>
/// 使用方法获取单例实例
/// </summary>
/// <returns></returns>
public static SingletonSample GetInstance()
{
if (_instance != null)
{
return(_instance);
}
lock (InstanceLocker)
{
if (_instance == null)
{
_instance = new SingletonSample();
}
}
return(_instance);
}