如何转换字符串并在Swift中执行计算？

Question

我有一个字符串为： “我有67 + 89.06美元。”

现在我想要做的计算和更新字符串为： “我有156.06美元。”

使用Swift如何执行此任务？

原始字符串中的数字可以是任何值，而不只是我上面写的。

Answer 1

我劝你在developer.apple.com

"I have 67+89.06 Dollars." 
    // In order to get a Float value both operands need to be of type Float. 
    let valueCalculate = "I have \(Float(67) + Float((89.06))) Dollars" 
print(valueCalculate) 

// Convert String to Int 
var stringNumber = "123456" 
    var convertToInt = Int(stringNumber) 

// Convert Float value to Int 
    var stringNumber = "123456" 
    var convertToInt = Int(stringNumber) 

    //convert value of type Float written as a String to Float 
    var stringWithFloatValue = "123.250" 
    var stringtoFloatValue = Float(stringWithFloatValue) 

    //convert Float value to Int 
    if stringtoFloatValue != nil { 
     let floatToInt = Int(stringtoFloatValue!) 
}