&rest
numbers → sum
Returns the sum of numbers, performing any necessary type conversions in the process. If no numbers are supplied, 0
is returned.
(+)
→0
(+ 1)
→1
(+ 31/100 69/100)
→1
(+ 1/5 0.8)
→1.0
None.
Might signal type-error if some argument is not a number. Might signal arithmetic-error.
None.