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Question

试图修复该错误：

Binary operator '<' cannot be applied to operands of type 'CGFloat' and 'Double'.

我试图let centerRadius: CGFloat = 37.5和let whiteDotRadius: CGFloat = 23.5.的代码运行，但不打印语句时whiteDot是在中心内。我如何解决错误信息？

let centerRadius = 37.5 
    let whiteDotRadius = 23.5 

    let whiteDotDist = hypot(center.center.x - whiteDot.center.x, center.center.y - whiteDot.center.y - whiteDot.center.y) 

    if whiteDotDist < centerRadius - whiteDotRadius { 
     print("Inside") 
    } 

Answer 1

更改您的if语句来此

if CFGFloat(whiteDotDist) < CFGFloat(centerRadius - whiteDotRadius) 

希望这有助于！