Unlike static methods, Objective-C's class methods can be inherited (which, in combination with having the aforementionedself, is exactly why many classes can share a single, simple, implementation of+alloconNS
NSObject还有些方法能在运行时获得类的信息,并检查一些特性,比如class返回对象的类;isKindOfClass:和isMemberOfClass:则检查对象是否在指定的类继承体系中;respondsToSelector:检查对象能否响应指定的消息;conformsToProtocol:检查对象是否实现了指定协议类的方法;methodForSelector:则返回指定方法实现的地址。 1.3 Runtime的函数 ...
using System; namespace ConsoleEnum { class host { [STAThread] static void Main(string[] args) { // Create an array of Car objects. Car[] arrayOfCars= new Car[6] { new Car("Ford",1992), new Car("Fiat",1988), new Car("Buick",1932), new Car("Ford",1932), new Car("Dodge"...
In the construction of DT, the process starts from the root node for predicting a class from the input training data. The best attributes are placed at the root of the tree. The input training data is split into subsets, and root attribute values are compared with the data attributes. For...
Search the class’s method cache for the method IMP(use hash to find&store method in cache) -1. If found, jump to it. -2. Not found: lookup the method IMP in the class itself corresponding its hierarchy chain. If found, load it into cache and jump to it. If not found, jump to...
16 bit code assemble with VS 64bits: CoCreateInstance 0x80040154 Class not registered 8 Bit BMP conversion A dynamic link library (DLL) initialization routine failed. (Exception from HRESULT: 0x8007045A) a nonstatic member reference must be relative to a specific object Abort() has been called ...
For 64-bit values, use #include "roaring64map.hh" and the Roaring64Map class, which has a similar API. Dealing with large volumes of data Some users have to deal with large volumes of data. It may be important for these users to be aware of the addMany (C++) roaring_bitmap_or_many...
(string msg); } // Interface that contains only the required methods interface IMyProtocol: INativeObject, IDisposable { [Export ("say:")] void Say (string msg); } // Extension methods static class IMyProtocol_Extensions { public static void Optional (this IMyProtocol this, string msg); ...
Class library overview Walkthroughs (MFC) MFC API Reference MFC classes MFC classes CAccelerateDecelerateTransition class CAnimateCtrl class CAnimationBaseObject class CAnimationColor class CAnimationController class CAnimationGroup class CAnimationManagerEventHandler class CAnimationPoint class CAnimationRect ...
Compiler error C7539'%1$I': a class with user-declared constructors cannot have a member with the same name as the class Compiler error C7540'%1$I': member cannot have the same name as the enclosing class Compiler error C7541'%1$I': C++17 inline static data members are not compatibl...