Question

Suppose I need to have a class which wraps a priority queue of other objects (meaning the queue is a member of the class), and additionally gives it some extra functions.

I am not quite sure what the best way is to define that vector and, mainly, how to instantiate it.

Currently I have something like this in the header file:

// in SomeClass.h: class SomeClass {     public:         SomeClass(); // constructor             // other methods     private:         std::priority_queue<OtherClass> queue; }; 

while the source file is something like this:

// in SomeClass.cpp SomeClass::SomeClass():     queue() // removed the constructor, no need to explicitly call it     {}  // other methods 

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EDIT: removed the call, per Ray’s answer.

Answer 1

Just write:

SomeClass::SomeClass():     queue() { } 

C++ knows to call the constructor automatically from there with no arguments.