C++ Allocate Vector Size in class variable without default initialization

Question

So I have a class (HostObject) that has a vector of complex classes (object1) inside it. Such as the pseudocode depicted below

#DEFINE ARRAY_SIZE 10
class HostOb         


        

Answer 1

There is no constructor for std::vector for for reserving capacity. The only way you can reserve capacity is to use reserve member function.

#DEFINE ARRAY_SIZE 10
class HostObject {
    //other member variables
    vector vec;

    //default constructor
    HostObject(){
        vec.reserve(ARRAY_SIZE);
    }

    //my custom constructor
    HostObject(double parmeter1, double parameter2, doubleparameter3) {
        vec.reserve(ARRAY_SIZE);
        //some code doing some calculations 

        for (int i = 0; i 

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