🌀floating +−⨉÷ int

🌀 FloatingPoint

// 2022.02.15 (+) : operators +, -
// 2022.02.22 (r) : generalize from CGFloat to FloatingPoint

import SwiftUI

extension FloatingPoint {
    
    /// `fp + int`
    static public func + (a: Self, n: Int) -> Self {
        a + Self(n)
    }
    
    /// `fp - int`
    static public func - (a: Self, n: Int) -> Self {
        a - Self(n)
    }
    
    /// `fp * int`
    static public func * (a: Self, n: Int) -> Self {
        a * Self(n)
    }
    
    /// `fp / int`
    static public func / (a: Self, n: Int) -> Self {
        a / Self(n)
    }
}

👥 相關

• is custom operator on FloatingPoint and Int.

• operate on CGFloat (Core Graphicstype) and Int.

• CGFloat is BinaryFloatingPoint.

• Int is Numbers.

⬇️ 應用

• even-odd fill mode - 用於計算每層內縮的量

• MyGrid - calculate cell view aspect ratio.

• Polygon

• Loading Indicators (dots) - used in .delay( 0.2 * i ).

History

✏️

1. 2022.02.22

1

// 2022.02.15 (+) : operators +, -

import SwiftUI

/// `cgFloat + int`
public func + (a: CGFloat, n: Int) -> CGFloat {
    a + CGFloat(n)
}

/// `cgFloat - int`
public func - (a: CGFloat, n: Int) -> CGFloat {
    a - CGFloat(n)
}

/// `cgFloat * int`
public func * (a: CGFloat, n: Int) -> CGFloat {
    a * CGFloat(n)
}

/// `cgFloat / int`
public func / (a: CGFloat, n: Int) -> CGFloat {
    a / CGFloat(n)
}