Get a list of every value for a given key in a set of dictionaries?

c#

Solution

You can select `dict["filePath"]` for each `dict` in `levelVariantURIDicts` with Select:

return levelVariantURIDicts.Select(dict => dict["filePath"])
                           .Distinct()
                           .ToList();

Drop `.Distinct()` if duplicate entries in the result are fine. Drop `.ToList()` if you don't really need to return an ICollection<T> and an IEnumerable<T> is fine.

Problem

How can I write this code more cleanly/concisely? ``` /// <summary> /// Creates a set of valid URIs. /// </summary> /// <param name="levelVariantURIDicts">A collection of dictionaries of the form: /// dict["filePath"] == theFilePath </param> /// <returns></returns> private ICollection<string> URIsOfDicts(ICollection<IDictionary<string, string>> levelVariantURIDicts) { ICollection<string> result = new HashSet<string>(); foreach (IDictionary<string, string> dict in levelVariantURIDicts) { result.Add(dict["filePath"]); } return result; } ```

Original source