如何检查元素是否在 std::set 中?
如何检查元素是否在集合中?
How do you check that an element is in a set?
是否有更简单的等价于以下代码:
Is there a simpler equivalent of the following code:
myset.find(x) != myset.end()
推荐答案
在许多 STL 容器(例如 std::map、std::set<)中检查是否存在的典型方法/code>, ... 是:
The typical way to check for existence in many STL containers such as std::map, std::set, ... is:
const bool is_in = container.find(element) != container.end();
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