查看类簇中的类（17）

#import <Foundation/Foundation.h> #import <stdio.h> static void printClass(NSString *obj) { printf("Class=%s,\tMember=%s,\tKind=%s\n", [NSStringFromClass([obj class]) UTF8String], [obj isMemberOfClass:[NSString class]] ? "YES" : "NO", [obj isKindOfClass:[NSString class]] ? "YES" : "NO"); } int main(void) { NSString *ss = @"static string"; @autoreleasepool { printClass(ss); printClass([ss stringByAppendingString:@"(｡◝‿◜｡)"]); printClass([ss stringByAppendingString:@"(｡◝_◜｡)"]); printClass(NSHomeDirectory()); } return 0; }