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摘要： 关于NSString的各种初始化与之的retainCountint main(int argc, const char * argv[]){ @autoreleasepool { NSString *s1 = @"Constant string"; NSLog(@"%lx", [s1 retainCount]); // ffffffffffffffff NSString *s2 = [NSString stringWithString:@"string 2"]; NSLog(@"%lx", [s2 r... 阅读全文