编译错误如下: namespacedefine.cpp:20:33: error: expected unqualified-id before numeric constant namespacedefine.cpp:20:33: error: expected ‘;’ before numeric constant namespacedefine.cpp:21:33: error: expected unqualified-id before numeric constant namespacedefine.cpp:21:33: error: expected ‘...
1.namesapce命名空间这个概念,它可作为附加信息来区分不同库中相同名称的函数、类、变量等。使用了命名空间即定义了上下文。本质上,命名空间就是定义了一个范围。 可以使用using namespace指令,这样在使用命名…
const更加易读、美观。 const默认在当前的namespace下定义常量,而使用define则需要你写明整个namespace的完整路径: 自从PHP5.6后,使用const数组也能被定义为常量。而define目前是不支持这一功能的,但是该功能会在PHP7中被实现: 因为const在编译时就被执行了,所以它在速度上要比define快一点。 尤其是在使用define定义...
Other model elements also define namespaces. For example, an operation belongs to the namespace defined by its parent class, so that its qualified name is likeMyModel ::MyPackage ::MyClass ::MyOperation. In the same manner, an action belongs to the namespace defined by its parent activity....
#define NS_BEGIN(name) namespace name { #define NS_END } 1. 2. 这里定义了一个名为NS_BEGIN和NS_END的宏,它们用于定义命名空间。在程序中,可以使用NS_BEGIN(name)和NS_END来代替namespace name {和},例如: NS_BEGIN(my_namespace) int a = 1; ...
varobject = WinJS.Namespace.define(name, members); Parameters name Type:string The name of the namespace. This could be a dot-separated name for nested namespaces. members Type:object The members of the new namespace. Return value
(function () { "use strict"; var Robot = WinJS.Class.define(function (name) { this.name = name; }); function getAllRobots() { return allRobots; } WinJS.Namespace.define("Robotics", { Robot: Robot }); var allRobots = [ new Robot("mike"), new Robot("ellen") ]; function ...
varobject = WinJS.Namespace.define(name, members); Parameters name Type:string The name of the namespace. This could be a dot-separated name for nested namespaces. members Type:object The members of the new namespace. Return value
varobject = WinJS.Namespace.define(name, members); Parameters name Type:string The name of the namespace. This could be a dot-separated name for nested namespaces. members Type:object The members of the new namespace. Return value
8 namespace ConditionalCompilation 9 { 10 class Program 11 { 12 static void Main(string[] args) 13 { 14 #if Dragon 15 Console.WriteLine("Dragon is defined"); 16 #else 17 Console.WriteLine("Dragon is not defined"); 18 #endif