swift中double的错误值

Question

I have string value and converting to double value for adding it. But it shows different values when debugging. While using print statement it shows correct values, but when using "po" command in console shows different, so getting different results then expected one.

    let stringValue = "83.84"
    let doubleValue = Double(stringValue)
    let floatValue = Float(stringValue)

    let decimalArray: Array<Double> = [doubleValue!, doubleValue!, doubleValue!]
    let test1 = decimalArray.reduce(0, combine: +)

    let floatArray: Array<Float> = [floatValue!, floatValue!, floatValue!]
    let test2 = floatArray.reduce(0, combine: +)

    print(test1)
    print(test2)

I have attached the image of the console. Please let me know how this can be resolved.

Answer 1

I think you are using po before it's properly converting. put just one breakpoint at last line ie at print(test2) and then check.