Geterror

Calling Convention

Call

local r[,...] = sl.non([...])

Args

a1...aN are of any type

Results

r1...rN are boolean

Usage Example

local sl = dofile(getinstalldir()..'/lib/simplelib.lua')
non  = sl.non
null = sl.null
local a,b,c,d = non(false,nil,null,0)
print(a)
print(b)
print(c)
print(d)

--> 'false'
--> 'true'
--> 'true'
--> 'false'

Description

Tests each supplied argument as to whether it is nil or null. If so, then non returns true for that value, otherwise false. non returns the same number of values as the number of arguments it accepted.

Upon Error

If non receives no arguments, then it returns a single nil value.

See Also

• ERR

• nil

• null

• try

• type