xcode编译提示问题:Existing instance variable '_delegate' for property 'delegate' with  assign attribute must be __unsafe_unretained 改动为: __unsafe_unretained id<QuadCurveMenuDelegate> _delegate; 这样就能够编译通过了.…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace EventClock { public class ClassWithDelegate { //封装了一个返回值为int的多重委托方法 public delegate int DelegateThatReturns(); public event Delega…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace EventClock { public class ClassWithDelegate { //封装了一个返回值为int的多重委托方法 public delegate int DelegateThatReturns(); public DelegateThat…

//public event SecondChangeHandler OnSecondChange; 若将委托加上event,则视作是事件,不是委托,外围就不能直接对OnSecondChange传值 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace EventClock { //一个存放事件信息的类 //存放…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace Starter { public enum Comparison { theFirstComesFirst = 1, theSecondComesFirst = 2 } //包含两项的简单集合 public class Pair<T> { //存放两个对象的…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; //如果账户金额小于0 触发事件 namespace Starter { public enum Comparison { theFirstComesFirst = 1, theSecondComesFirst = 2 } //包含两项的简单集合 public class Pai…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; //如果账户金额小于0 触发事件 namespace Starter { public delegate int DeleageteClass(out DateTime start, out DateTime stop); class Program { static void…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; //异步调用 //returntype EndInvoke(ref_out_argument,AsyncWaitHandle ar) namespace Starter { public delegate int DeleageteClass(out DateTime start…

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Delegate { public delegate int Myfunction(ref int refCount); class Program { static void Main(string[] args) { Myfunction[] mfs = { MethodA, MethodA, Meth…

值参数不能加,引用参数可以. 引用参数是共享的 using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Delegate { public delegate void Myfunction(int valCount,ref int refCount); class Program { static void Main(string[] args) { Myfun…