nullp(3)              LPC Library Functions              nullp(3)

NAME
     nullp() - determine whether or not a given variable is null.

SYNOPSIS
     int nullp( mixed arg );

DESCRIPTION
     Return 1 if `arg' is null.  'arg' will be null in  the  fol-
     lowing cases:

     1.   it has not yet been initialized.

     2.   it points to a destructed object.

     3.   it is a function (formal) parameter that corresponds to
          a missing actual argument.

SEE ALSO
     mapp(3), stringp(3), pointerp(3), objectp(3), intp(3),  buf-
     ferp(3), floatp(3), functionp(3), undefinedp(3), errorp(3)

MudOS                Last change: 5 Sep 1994                    1