can't solve challenge 1 of 2

Question

Challenge Task 1 of 2
Use the syntactic sugar just learned about to convert the Area property to a single line property.
 Important: In each task of this code challenge, the code you write should be added to the code from the previous task. Restart   Preview   Get Help   Check Work
Square.cs
Polygon.cs
1
namespace Treehouse.CodeChallenges
2
{
3
    class Square : Polygon
4
    {
5
        public double SideLength { get; private set; }
6
​
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        public double Area 
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        { 
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            get { return SideLength * SideLength; } 
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        }
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        public Square(double sideLength) : base(4)
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        {
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            SideLength = sideLength;
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        }
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        public void Scale(double factor)
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        {
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            SideLength *= factor;
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        }
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    }
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}
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​
```Square.cs
namespace Treehouse.CodeChallenges
{
    class Square : Polygon
    {
        public double SideLength { get; private set; }
    public double Area 
    { 
        get { return SideLength * SideLength; } 
    }

public Square(double sideLength) : base(4)
    {
        SideLength = sideLength;
    }

public void Scale(double factor)
    {
        SideLength *= factor;
    }
}
}
```
```Polygon.cs
namespace Treehouse.CodeChallenges
{
    class Polygon
    {
        public int NumSides { get; private set; }
    public Polygon(int numSides)
    {
        NumSides = numSides;
    }
}
}
```

tjgrist · Accepted Answer

Hi Shawn! So there are a couple different ways to write a property in C#. One way is to use the syntax:
C#
public double Area
{
 get { return SideLength * SideLength } 
}

Another is (and this is the style the challenge is asking for) is to write it on one line using the "=>" which is essentially the same as the "get { return }" part in the other property style. That "syntactical sugar" style looks like this:
C#
public double Area => SideLength * SideLength;

Hope that helps! the next challenge you should be able to solve given this information :)

Larry Singleton · Answer

This passed for me and its explained starting at 1:27 into the video:
namespace Treehouse.CodeChallenges
{
    class Square : Polygon
    {
        public double SideLength { get; private set; }
    public double Area => SideLength * SideLength;

public Square(double sideLength) : base(4)
    {
        SideLength = sideLength;
    }

public void Scale(double factor)
    {
        SideLength *= factor;
    }
}
}

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shawn khah

shawn khah

can't solve challenge 1 of 2

2 Answers

tjgrist

tjgrist

shawn khah

shawn khah

Katherine O'Halloran

Katherine O'Halloran

Larry Singleton

Larry Singleton