operator [] method
Returns a reference
Note: the memory of returned VecDMatch is owned by this VecVecDMatch, explicitly call VecDMatch.clone if the parent VecVecDMatch may be disposed.
Implementation
@override
VecDMatch operator [](int idx) =>
VecDMatch.fromPointer(ccore.std_VecVecDMatch_get_p(ptr, idx), attach: false);