消费者是否愿意为了安全冗余付费是个未知数，否则沃尔沃应该是全球销量第一。
void testSort(void (*sortFunc)(int[], int), char *name, int arr[], int n) {，详情可参考同城约会
“拿着订单养羊，收入不愁。”养殖大户张四海成立合作社，与食品公司签订供货协议，带着30多户乡亲走上致富路。，这一点在51吃瓜中也有详细论述
With normal Smalltalk code, I would explore the system using senders, implementors, inspectors— gradually rebuilding my understanding. Here, that breaks down. The matching syntax lives inside strings, invisible to standard navigation tools. No code completion. No refactorings. No help from the environment.