C++ struct sorting error
我正在尝试在C ++中对自定义结构的向量进行排序
1 2 3 | struct Book{ public:int H,W,V,i; }; |
一个简单的函子
1 2 3 4 5 6 7 8 | class CompareHeight { public: int operator() (Book lhs,Book rhs) { return lhs.H-rhs.H; } }; |
尝试时:
1 2 3 | vector<Book> books(X); ..... sort(books.begin(),books.end(), CompareHeight()); |
它给我异常"无效的运算符<"
此错误是什么意思?
谢谢
1 2 3 4 | bool operator() (const Book& lhs, const Book& rhs) { return lhs.H < rhs.H; } |
还要注意对