如何在C ++中执行集合向量? [英] How to do the vector of sets in C++?

问题描述

我可以做一个简单的集合数组: set < char > * words = new set < char > [10] 我怎样做向量集? 这导致编译器错误: vector < set< char >> v. 谢谢您的回答！

I can do a simple array of sets: set < char > * words = new set < char > [10] How I can do a vector of sets? This results in a compiler error: vector < set< char >> v . Thank you for answers!

推荐答案

如果vector < set< char >> v正是您所拥有的(我希望您剪切并粘贴)，则您遇到了一个令人讨厌的小功能之一C ++.

If vector < set< char >> v is exactly what you've got there (I hope you cut and pasted), you've run into one of the annoying little features of C++.

那些>>在您看来就像是两个模板的两个闭合尖括号.对于编译器，它们看起来像是右移运算符.将它们更改为> >，并在两者之间留一个空格.

Those >> look to you like two closing angle brackets for two templates. They look like a right shift operator to the compiler. Change them to > > with a space in between.

幸运的是，这一问题已在今年应批准的C ++标准中得到解决.不幸的是，您现在还没有使用兼容C ++ 11的编译器.

Fortunately, this is being addressed in the C++ standard that should be ratified this year. Unfortunately, you aren't working with a C++11-compliant compiler just now.

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