+ (FUNCTION)

Format: (+ <exp1> <exp2> ...)

Required arguments: None.

Argument expressions must evaluate to numbers.

Argument expressions are evaluated and their sum is computed. See below for special cases of zero or one arguments.

Examples:

> (+ 4 5 6)
15

> (+ 123.5 12/3)
127.5

> (+ (* 2 3) 8)
14

> (+ 'a 1)
Error: A is not of type NUMBER.

Special Cases:

> (+ 3)
3

> (+)
0