Operator

-(_:_:)

Subtracts one value from another and produces their difference, rounded to a representable value.

Required.

Declaration

override static func - (lhs: Self, rhs: Self) -> Self

Parameters

lhs

A numeric value.

rhs

The value to subtract from lhs.

Discussion

The subtraction operator (-) calculates the difference of its two arguments. For example:

let x = 7.5
let y = x - 2.25
// y == 5.25

The - operator implements the subtraction operation defined by the IEEE 754 specification.