plus

infix operator fun plus(other: Int): Int
infix operator fun plus(other: NonZeroInt): Int
infix operator fun plus(other: PositiveInt): Int
infix operator fun plus(other: StrictlyPositiveInt): Int
infix operator fun plus(other: NegativeInt): NegativeInt
infix operator fun plus(other: StrictlyNegativeInt): StrictlyNegativeInt

Adds the other value to this value.