Is there any problem of calling functions in the initialization list?

Question

Hi, I'm writing this copy constructor:

//CCtor of RegMatrix                    
RegMatrix::RegMatrix(const RegMatrix &other){

    this-> numRow = other.getRow();
    this-> numCol = other.getCol();

    //Create
    _matrix = createMatrix(other.numRow,other.numCol);

    int i,j;

    //Copy Matrix
    for(i=0;i<numRow; ++i){
        for(j=0;j<numCol; ++j){
            _matrix[i][j] = other._matrix[i][j];
        }
    }
}

Is there a problem to initialize numRow, numCol in the initialization list like this: numRow(other.numRow), numCol(other.numCol) instead of:

this-> numRow = other.getRow();
this-> numCol = other.getCol();

Also, i don't know if there isn't such a problem, is there a problem of calling other classes' object's function in the initialization list, such as:

numRow(other.getRow())

instead of:

this-> numRow = other.getRow();

Answer 1

No there is no problem actually. Except that be careful that the order of initialization is NOT the order in which you specify initializers in the init-list. The order is the one in which your members have been declared in the class. Other than that potential problem, I see none. HTH