VersionsNull             package:Biobase             R Documentation

_C_l_a_s_s "_V_e_r_s_i_o_n_s_N_u_l_l"

_D_e_s_c_r_i_p_t_i_o_n:

     A class used to represent the `version' of unversioned objects.
     Useful primarily for method dispatch.

_M_e_t_h_o_d_s:

     The following are defined; package developers may write additional
     methods.

     '_n_e_w("_V_e_r_s_i_o_n_s_N_u_l_l", ...)' Create a new 'VersionsNull-class'
          instance, ignoring any additional arguments.

     '_s_h_o_w(_o_b_j_e_c_t)' Display ``No version''.

_A_u_t_h_o_r(_s):

     Biocore

_S_e_e _A_l_s_o:

     'classVersion'

_E_x_a_m_p_l_e_s:

     obj <- new("VersionsNull")
     obj

     obj <- new("VersionsNull", A="1.0.0") # warning
     obj