Operator 演算子

-(_:_:)

Subtracts one value from another and produces their difference.

Declaration 宣言 

static func - (lhs: AnimatablePair<First, Second>, rhs: AnimatablePair<First, Second>) -> AnimatablePair<First, Second>

Parameters パラメータ

lhs

A numeric value. ある数値。

rhs

The value to subtract from lhs. lhsから減じる値。

Discussion 議論

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


8 - 3                   // 5
-10 - 5                 // -15
100 - -5                // 105
10.5 - 100.0            // -89.5

You cannot use - with arguments of different types. To subtract values of different types, convert one of the values to the other value’s type.


let x: UInt8 = 21
let y: UInt = 1000000
y - UInt(x)             // 999979

See Also 参照

Manipulating Animations

static var zero: AnimatablePair<First, Second>
The zero value. ゼロ値。
static func + (AnimatablePair<First, Second>, AnimatablePair<First, Second>) -> AnimatablePair<First, Second>
Adds two values and produces their sum. ２つの値を加算してそれらの合計を生成します。
static func += (inout AnimatablePair<First, Second>, AnimatablePair<First, Second>)
Adds two values and stores the result in the left-hand-side variable. ２つの値を加算して、結果を左手側の変数に格納します。
static func -= (inout AnimatablePair<First, Second>, AnimatablePair<First, Second>)
Subtracts the second value from the first and stores the difference in the left-hand-side variable. ２番目の値を最初のものから減じて、その差を左手側の変数の中に格納します。
var magnitudeSquared: Double
The dot-product of this animated pair with itself.
func scale(by: Double)
Multiplies each component of this value by the given value. この値の各構成要素をこの与えられた値で乗算します。