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

Posted by kask
kask
7,509 Points

Enums and object challenge 1

Needing a bit of help not quite understanding what it wants me to do.

"In the editor below you have two objects - a struct named Point and a class named Robot. The Robot stores its location as a point instance and contains a move function.

The task of this challenge is to complete the implementation for move. Move takes a parameter of type Direction which is an enumeration listing the possible movement directions.

When you tell the robot to move up (by specifying Direction.Up as the argument), the y coordinate should increase by 1. Similarly moving down means the y coordinate decreases by 1, moving right means the x coordinate increases by 1 and finally left means x decreases by 1."

3 Answers

Brendan Whiting
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
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

Depending on the direction of the move, you're going to increment or decrement the robot's location x or y coordinate. Let me know if you need more than that.

kask
kask
7,509 Points

Ok finally got it thank you :)

Gibson Smiley
Gibson Smiley
1,923 Points
Gibson Smiley
Gibson Smiley
1,923 Points

What was the correct code?

Gibson Smiley
Gibson Smiley
1,923 Points
Gibson Smiley
Gibson Smiley
1,923 Points

Never mind, I got it:

  switch direction {
        case .Up: location.y += 1
        case .Down: location.y -= 1
        case .Right: location.x += 1
        case .Left: location.x -= 1
        }```
Joshua Hardy
Joshua Hardy
17,317 Points
Joshua Hardy
Joshua Hardy
17,317 Points 
switch direction {
        case .up: location.y += 1
        case .down: location.y -= 1
        case .right: location.x += 1
        case .left: location.x -= 1
        }