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C# Intermediate C# Polymorphism Virtual Properties

blake littleton
blake littleton
14,255 Points
Posted by blake littleton
blake littleton
14,255 Points

Override the Description proerty..?

So its asking to override the description property so that it can return the text. I cant really tell what I've done wrong because their is no preview button . Any suggestions?

RepeatDetector.cs 
namespace Treehouse.CodeChallenges
{
    class RepeatDetector : SequenceDetector
    {
        public override bool Scan(int[] sequence)
        {
            if(sequence.Length < 2)
            {
                return false;
            }

            for(int i = 1; i < sequence.Length; ++i)
            {
                if(sequence[i] == sequence[i-1])
                {
                    return true;
                }
            }

            return false;
        }
    }
}
SequenceDetector.cs 
namespace Treehouse.CodeChallenges
{
    class SequenceDetector
    {
        public override string Description => "Detects Repetitions";

        public virtual bool Scan(int[] sequence)
        {
            return true;
        }
    }
}

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

I see a few issues:

  • the challenge says "In RepeatDetector, override the Description property...", but your override code seems to have been placed in the other file
  • the item being overridden must be declared "virtual" (that change would go in SequenceDetector)
  • you wrote "Detects Repetitions" (capital "R") instead of "Detects repetitions" (little "r")..

I noticed the "Bummer" messages specifically direct you to the preview. You might want to report the fact that is is missing to Support.