Subtracts the second value from the first and stores the difference in the left-hand-side variable, rounding to a representable value.
SDK
- Xcode 9.0+
Framework
- Swift Standard Library
Operator-=(_:
-=(_:
Relationships
From Protocol
See Also
Arithmetic with Assignment
static func += (inout Double, Double)Adds two values and stores the result in the left-hand-side variable, rounded to a representable value.
static func *= (inout Double, Double)Multiplies two values and stores the result in the left-hand-side variable, rounding to a representable value.
static func /= (inout Double, Double)Divides the first value by the second and stores the quotient in the left-hand-side variable, rounding to a representable value.