nulldefault         package:DescribeDisplay         R Documentation

_N_u_l_l _d_e_f_a_u_l_t

_D_e_s_c_r_i_p_t_i_o_n:

     Convienece function for setting defaults for null values

_U_s_a_g_e:

     nulldefault(x, default)

_A_r_g_u_m_e_n_t_s:

       x: value

 default: default to use if value is null

_D_e_t_a_i_l_s:

_A_u_t_h_o_r(_s):

     Hadley Wickham <h.wickham@gmail.com>

_E_x_a_m_p_l_e_s:

