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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enums and Objects

Posted by Hector Lopez
Hector Lopez
1,477 Points

I have no idea what is supposed to be returned in my switch statement to get the x or y coordinate to move.

I think I have everything in order except the part where I need to return something in each case. I've tried Point(x:0, y:0) and I get non-void return value in void function.

2 Answers

Brendan Whiting
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Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points

A robot has a property called location which is an instance of Point, which will mean that location has an x and a y property. The important thing to note is that you don't modify properties of Point, you modify properties of location.

                switch direction {
          case .Up: location.y++
          case .Down: location.y--
          case .Right: location.x++
          case .Left: location.x--
        }
Hector Lopez
Hector Lopez
1,477 Points
Hector Lopez
Hector Lopez
1,477 Points

Thanks!