* Info on components is copied from the first of the given arrays. Number of components
* in the given arrays must be the same.
* \param [in] a1 - an array to include in the result array.
* \param [in] a2 - another array to include in the result array.
* Info on components is copied from the first of the given arrays. Number of components
* in the given arrays must be the same.
* \param [in] a1 - an array to include in the result array.
* \param [in] a2 - another array to include in the result array.
* \return DataArrayChar * - the new instance of DataArrayChar.
* The caller is to delete this result array using decrRef() as it is no more
* needed.
* \return DataArrayChar * - the new instance of DataArrayChar.
* The caller is to delete this result array using decrRef() as it is no more
* needed.