Strange conversion results

iOS Programming: The Big Nerd Ranch Guide (6th Edi 4. Text Input and Delegation
1

Hi,

I’ve been following this chapter closely, and I seem to be getting some wild results when I run WorldTrotter on the simulator. I’m a little stumped as to why I’m getting these odd conversion results. I’ve gone through from scratch twice, and I keep getting the same error. Everything works fine up until I create the function updateCelsiusLabel() and update fahrenheitFieldEditingChanged() on pg. 80

Screen Shot 2017-07-11 at 1.08.16 pm.png1812×1340 509 KB

If anyone could point me in the right direction I’d be very grateful!

Thanks

2

What exactly is the problem? That conversion looks right.

import Foundation

struct TemperatureConversion {
    static var fahrenheitValue = Measurement <UnitTemperature> (value: 40, unit: .fahrenheit)
    static var celsiusValue    = Measurement <UnitTemperature> (value: 4.44444444444673, unit: .celsius)

    static func main () {
        print ("\(fahrenheitValue) -> \(fahrenheitValue.converted (to:.celsius))")
        print ("\(celsiusValue) -> \(celsiusValue.converted (to:.fahrenheit))")

    }
}

40.0 °F  -> 4.44444444444673 °C
4.44444444444673 °C -> 40.0 °F
3

You are right!

The level of precision showed a result that went beyond the limits of the screen, which looked as if I was getting incorrect output.

Thanks for pointing me in the right direction.