How Can LINQ Efficiently Find Items in a String List?

Finding an Item in a List Using LINQ

The provided code defines a function to find an item in a list of strings using a loop or delegate. However, LINQ (Language INtegrated Query) offers alternative approaches to achieve the same result.

Using Single/SingleOrDefault

If you expect a single match, the Single method can be utilized:

string search = "lookforme";
List<string> myList = new List<string>();
string result = myList.Single(s => s == search);

Using Where

If you may have multiple matches, Where returns all matching items as an IEnumerable:

IEnumerable<string> results = myList.Where(s => s == search);

Using First/FirstOrDefault

First returns the first matching item, similar to Single. FirstOrDefault returns null or default for empty sequences instead of throwing an exception:

string result = myList.First(s => s == search);

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