BOOL class_swizzleMethodAndStore(Classclass,SEL original,IMP replacement,IMPPointer store) {IMP imp = NULL; Method method = class_getInstanceMethod(class,original);if(method) {constchar *type = method_getTypeEncoding(method); imp = class_replaceMethod(class,original,replacement,type);if(!imp) { ...
NSLog(@"Running as a function pointer will be more efficiency!"); say_Func(cattle[1],say); } -(void) doWithCattleId:(id) aCattle colorParam:(NSString*) color { if(notFirstRun==NO) { NSString*myName=NSStringFromSelector(_cmd); NSLog(@"Running in the method of %@", myName); no...
Denotes Java interface that imports a C pointer type. The interface must extend PointerBase, i.e., it is a word type. There is never a Java class that implements the interface. If the method has a non-void return type that is not the annotated interface, it is a read-method of the...
Handle Handle (pointer) to the unmanaged object representation. Name The Objective-C name for this class. SuperClass The Objective-C handle to the super class for this class.Methods Išplėsti lentelę GetHandle(String) Returns the unmanaged handle to the Objective-C Class. GetHandle(Type...
编译器错误 C3715 “pointer”: 必须是指向“type”的指针 编译器错误 C3716 “%$L”: 不允许生成具有模块构造的预编译标头 编译器错误 C3717 “member”: 不能定义激发事件的方法 编译器错误 C3718 只能在接收类的成员函数的上下文中调用“__keyword” ...
NSLog(@"Running as a function pointer will be more efficiency!"); say_Func(cattle[1],say); } - (void) doWithCattleId:(id) aCattle colorParam:(NSString*) color { if(notFirstRun == NO) { NSString *myName = NSStringFromSelector(_cmd); ...
对于-> 的重载,我们返回的是pointer 但有一点需要注意,当调用 -> 时,这个操作符不会被消耗,而是继续作用下去。 上图中先调用 sp-> 返回的应该是px。照理说接下来应该是px method(),而实际上 -> 并没有消失而是继续作用在px身上 迭代器 由红色框和黄色部分可知,这也是个智能指针,但与其他不同的是他还需...
实际上,vbptr 指的是虚基类表指针(virtual base table pointer),该指针指向了一个虚基类表(virtual table),虚表中记录了虚基类与本类的偏移地址;通过偏移地址,这样就找到了虚基类成员,而虚继承也不用像普通多继承那样维持着公共基类(虚基类)的两份同样的拷贝,节省了存储空间。
NSLog(@"Running as a function pointer will be more efficiency!"); //调用saySomething方法 say_Func(cattle[1],say); } @end 测试主函数main() #import <Foundation/Foundation.h> #import "DoProxy.h" int main (int argc, const char * argv[]) { ...
个人体会:obj-C中的“Class类型变量”比c#中的Object基类还要灵活,可以用它生成任何类型的实例(但是它又不是NSObject)。而选择器SEL与函数指针IMP,如果非要跟c#扯上关系的话,这二个结合起来,就点类似c#中的反射+委托,可以根据一个方法名称字符串,直接调用方法。