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C# C# Collections Sets and Dictionaries Using Dictionaries

Code could not compile: No overload for method `Add' takes `1' arguments I think I might be using KeyValuePair wrong.

Either I'm using KeyValuePair wrong, or I'm not supposed to use KeyValuePair at all. I'm not sure.

LexicalAnalysis.cs
using System.Collections.Generic;

namespace Treehouse.CodeChallenges
{
    public class LexicalAnalysis
    {
        public Dictionary<string, int> WordCount = new Dictionary<string, int>();
        public Dictionary<string, int> WordCountGreater = new Dictionary<string, int>();

        public void AddWord(string word)
        {
            if(WordCount.ContainsKey(word))
            {
                WordCount[word] += 1;
            }
            else
            {
                WordCount[word] = 1;
            }
        }

        public void WordsWithCountGreaterThan(int count)
        {
            foreach(KeyValuePair<string, int> pair in WordCount)
            {
                if(pair.Value > count)
                {
                    WordCountGreater.Add(pair);
                }
            }
            return WordCountGreater;
        }
    }
}

1 Answer

Steven Parker
Steven Parker
231,198 Points

The Add method of a dictionary always takes two arguments.

The arguments are key, and value. It's not designed to take a single object that combines them.

But you could always pass the parts individually:

dictionary.Add(pair.Key, pair.Value);

Also, remember that your method returns a dictionary (not void).

Thank you.