std::unordered_multimap template < class Key, // unordered_multimap::key_type class T, // unordered_multimap::mapped_type class Hash = hash<Key>, // unordered_multimap::hasher class Pred = equal_to<Key>, // unordered_multimap::key_equal cla…
I decide to write to my blogs in English. When I meet something hard to depict, I'll add some Chinese necessarily. The differences between these containers are : The keys of set and map are unique, but they could be multiple for multiset and multimap…
自己一直用的是C++98规范来编程,对于C++11只闻其名却没用过其特性.近期因为工作的需要,需要掌握C++11的一些特性,所以查阅了一些C++11资料.因为自己有C++98的基础,所以从C++98过渡到C++11并不算特别吃力,读了一些书籍后,算是对C++11有了个比较基础的理解,感觉程序员还是要经常保持新语言新特性的更新,现在 C++ 标准都出到C++17了!这篇文章就是对C++11一些常用新特性的一些总结,以C++98和 C++11在语法上的差异来突出C++11新特性的非凡优势. 新语法…
hashmap是std::unordered_map的子类,前者对后者的接口做了进一步封装. hashmap的移动构造函数: hashmap(std::map<Key, Value>&& map) { // NOTE: We're using 'insert' here with a move iterator in order // to avoid copies because we know we have an r-value paramater. std::unord…