2 isobj - whether a value is an object
13 Determine if x is an object. This function will return 1 if x is
14 an object, 0 otherwise.
18 > print isobj(a), isobj(1)
29 isassoc, isatty, isblk, isconfig, isdefined, iserror, iseven, isfile,
30 ishash, isident, isint, islist, ismat, ismult, isnull, isnum,
31 isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
32 issimple, issq, isstr, istype