union-class          package:externalVector          R Documentation

_S_o_m_e _u_s_e_f_u_l _c_l_a_s_s _u_n_i_o_n_s

_D_e_s_c_r_i_p_t_i_o_n:

     The class "listOrNull" is a union of the classes "list" and
     "NULL". The class "listOrNull" is a union of the classes "list"
     and "NULL". The class "vectorNamesType" is a union of the classes
     "character", "NULL" and "externalVectorWithStorage".

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     These are virtual classes: no objects may be created from them.

_M_e_t_h_o_d_s:

     No methods defined with class "listOrNull", "integerOrNull" or
     "vectorNamesType" in the signature.

