usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingPegasusZero.Extensions;namespacePegasusZero.Demo.ExtensionMethod {classProgram {staticvoidMain(strin
因为 Where 是一个静态方法(static method),所以我们可以像其他静态方法一样直接调用它(invoke it directly):IEnumerable<string> expr = Sequence.Where(names, s => s.Length < 6);然而,扩展方法的一个独特(unique)的特点是我们还可以使用实例的语法(using instance syntax)来调用它:...
Extension methods are a new feature for C# 3.0 and I had the opportunity to implement them in the Compiler. These methods can then be called with instance syntax on any object that is convertible(see convertibility section for details) to the first param of the method.Validation Extension ...
c.MethodA(1); // C.MethodA(object) c.MethodA("hello"); // C.MethodA(object) c.MethodB(); // C.MethodB() } } } /* Output: Extension.MethodA(this IMyInterface myInterface, int i) Extension.MethodA(this IMyInterface myInterface, string s) A.MethodB() B.MethodA(int i) ...
If you are a control author and you are generating a convention where a particular named element in an applied template is the target for a behavior that is defined by the control itself, you can use the GetTemplateChild method from your control implementation code. The GetTemplateChild method is...
feature. While this feature opens up a new set of possibilities, it's worth noting that the underlying intermediate language (IL) code generated by the compiler is really doing nothing new or specific to the .NET Framework 3.5. In actuality, it is simply making a shared method call. ...
(struct objc_selector*)"sleep","v16@0:8",(void*)_I_Person_Test_sleep}}};// 类方法列表staticstruct/*_method_list_t*/{unsigned int entsize;// sizeof(struct _objc_method)unsigned int method_count;struct _objc_method method_list[2];}_OBJC_$_CATEGORY_CLASS_METHODS_Person_$_Test_...
// Declare an instance of class A, class B, and class C.A a =newA(); B b =newB(); C c =newC();// For a, b, and c, call the following methods:// -- MethodA with an int argument// -- MethodA with a string argument// -- MethodB with no argument.// A contains no...
class A : IMyInterface { public void MethodB() { Console.WriteLine("A.MethodB()"); } } class B : IMyInterface { public void MethodB() { Console.WriteLine("B.MethodB()"); } public void MethodA(int i) { Console.WriteLine("B.MethodA(int i)"); } } class C : IMyInterface ...
method2; //需求的,类实现文件中必须要实现这个方法 @optional method3;//可选择的,使用者可以选择性的实现 } @end (4)应用:利用协议可以实现代理模式。也就是给类寻找委托人,帮助类完成一些功能,而类不用自己亲自去做。这种代理模式使得代码的灵活性提高,也降低了耦合性,不必向继承那样,因为父类和子类的耦合...