COMP 1601 2021W Tutorial 1 Solutions

1. Change line 26 to be

   let Cs = String(format: "%.2f", C)

2. Add these lines between lines 27 and 28

    let Ks = String(format: "%.2f", C + 273.15)
    Text("\(Fs) is \(Ks) Kelvin")

3. The most straightforward solution is to make an HStack and separate
   each word into a separate Text view, adding a .bold() to the end of
   certain words; however, a better solution is to combine words with
   the + operator, e.g.

    Text("\(Fs)").bold() + Text(" is ") + Text("\(Cs)").bold() +
            Text(" Celsius")

4. You just need to duplicate the code from the temperature converter

         @State private var milesS = ""  // at the top of the view struct

           ...

            TextField("Enter Miles", text: $milesS)
            
            if let miles = Double(milesS) {
                let km = miles * 1.609344
                let kmS = String(format: "%.2f", km)
                Text("\(milesS)").bold() + Text(" miles is ") +
                    Text("\(kmS)").bold() + Text(" kilometers")
            } else {
                Text("Enter a distance please.")
            }

5. keywords: struct, private, var, if, let, else, some
   explicit types: ContentView (declaration), View
   implicit types: string (Fs, Cs), double (F, C)

6. some is a bit weird, what did you find mysterious?