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calc/help/isdefined
2017-05-21 15:38:25 -07:00

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NAME
isdefined - whether a string names a defined function
SYNOPSIS
isdefined(str)
TYPES
str string
return 0, 1, or 2
DESCRIPTION
isdefined(str) returns 1 if str is the name of a builtin function,
2 if str is the name of a user-defined function, 0 otherwise.
EXAMPLE
> isdefined("abs")
1
> isdefined("fun")
0
> define fun() { }
fun() defined
> isdefined("fun")
2
> undefine fun
> isdefined("fun")
0
LIMITS
none
LIBRARY
none - XXX ?
SEE ALSO
define, undefine,
isassoc, isatty, isblk, isconfig, iserror, iseven, isfile,
ishash, isident, isint, islist, ismat, ismult, isnull, isnum, isobj,
isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
issimple, issq, isstr, istype