.DT
replaceable
$MUDNAME$ driver help
replaceable
.SH Name
.SI 5
replaceable() - determine whether any functions are defined at this level
.EI
.SH Synopsis
.SI 5
int replaceable( object ob );
int replaceable( object ob, string *fnames );
.EI
.SH Description
.SP 5 5
In the second form, return 0 if the program for object `ob' defines any
functions explicitly, as opposed to simply inheriting. Function names
in the array `fnames' are ignored. If no such functions are defined, 1
is returned. If the second argument is omitted, it defaults to
({ "create" }). The purpose of this efun is to assist in making
automatic decisions on whether to call replace_program(). Note that
the default version ignores create(), so it is only safe to replace a
object for which replaceable() returns true if you never intend to
clone from that object.
.EP
.SH See also
.SI 5
replace_program(), create()
.EI
