Жители Санкт-Петербурга устроили «крысогон»17:52
One major limitation of malloc (and even the best implementations like jemalloc and dlmalloc) is that they try to use a single allocator for each data structure. This is a mistake: A huge performance gain can be had by using
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for(unsigned long long i=0;i<h->length;++i)unref(((void**)x)[i]);
// console.log(canSeePersonsCount([1,2,3,4,5])); // 输出 [1,1,1,1,0]（正确）