C ++在else / if中声明一个优先级队列？
我有两个不同的优先级队列，使用不同的比较器。我想一个if / else与一个布尔值来确定哪个p.q.将被设置为一个变量（例如pq）;
I have two different priority queues that use different comparators. I would like an if/else with a boolean value to determine which p.q. will be set to a variable (for example, "pq");
例如我有
priority_queue<test, vector<test>, CompareTest1> pq;
我如何将它放置在if / else中，所以如果布尔被标记pq将被设置为...
How would I place this in an if/else so if a boolean is flagged pq will be set like...
priority_queue<test, vector<test>, CompareTest2> pq;
谢谢。
这不能实现，因为如果你给一个不同的模板参数，两个模板是不同的类型。我的建议是传递一个具有布尔值的比较函数，该布尔值由if语句中的任何内容决定。例如：
This cannot be done because if you give a different template param the two templates are different types. My suggestion would be to pass a compare functor that has a boolean which is determined by whatever was gonna be in that if statement. For example:
struct compare {
bool b;
//set this instead of the if statement and allow the function to do something different
operator () (const test & lhs, const test & rhs) {
}
};