Person *p = [[Person alloc] init];
NSLog(@"p对象的地址：%p",p);
NSLog(@"p指针的地址：%p",&p);
优秀博客地址：
https://www.cnblogs.com/lulipro/p/7460206.html
//打印对象的内存地址
NSLog(@"内存地址1：%p",a);
//打印指针自己的内存地址
NSLog(@"内存地址2：%p",&a);
id classObject = objc_getClass([@"Person" UTF8String]);
unsigned int count = 0;
Ivar *ivarList = class_copyIvarList(classObject, &count);
//赋值
// NSLog(@"ivar:%s",Ivar);
for (int i = 0; i < count; i++) {
Ivar ivar = ivarList[i];
NSString *memberName = [NSString stringWithUTF8String:ivar_getName(ivar)];
NSLog(@"============ivarName:%@",memberName);
Person *p = [[Person alloc] init];
object_setIvar(p, ivar, @"苹果");
NSLog(@"============p.name:%@",p.name);
}
如上述代码所示，Ivar *ivarList ，ivar数组指针，
Ivar ivar = ivarList[i]; 地址变量
class_copyIvarList实现如下
Ivar *class_copyIvarList(Class cls, unsigned int *outCount)
{
Ivar *result = nil;
unsigned int count = 0;
int i;
if (!cls) {
if (outCount) *outCount = 0;
return nil;
}
if (cls->ivars) {
count = cls->ivars->ivar_count;
}
if (count > 0) {
result = (Ivar *)malloc((count+1) * sizeof(Ivar));
for (i = 0; i < cls->ivars->ivar_count; i++) {
result[i] = (Ivar)&cls->ivars->ivar_list[i];
}
result[i] = nil;
}
if (outCount) *outCount = count;
return result;
}
result[i] = (Ivar)&cls->ivars->ivar_list[i];
copylist中返回的数组中存地址
Ivar *result = nil;
返回的数组是一个指针变量
