+ (addition) operator

Type	Assocation	Precedence	Input types	Output types
binary	left	4	int float complex color	int float complex color

This operator returns the sum of both operands. The type of the result is equal to the largest type of the operands (complex is larger than float, and float is larger than int).

When used with color operands, the + operator returns a color where each component (red, green, blue, alpha) is the sum of the respective components from the operands.

Examples:

3 + 2                      ; 5
3.15 + 9                   ; 12.15
(3, 2) + (6, 4)            ; (9, 6)
rgba(0, 0.1, 0.2, 1) + \
rgba(0.5, 0.49, 0.1, 1)    ; rgba(0.5, 0.59, 0.3, 2)