First(), Last(), Any()

Helper methods to simplify development. Prevent common LINQ performance mistakes.

Source

public static T First<T>(this IList<T> list) {
    return list[0];
}

public static T Last<T>(this IList<T> list) {
    return list[list.Count - 1];
}

public static bool Any<T>(this ICollection<T> list) {
    return list.Count > 0;
}

Example

var l = new List<int> { 4, 12, 562, 1 };

Console.WriteLine(l.First()); // 4
Console.WriteLine(l.Last());  // 1
Console.WriteLine(l.Any());   // true

Author: Fons Sonnemans

Submitted on: 24 jan. 2014

Language: C#

Type: System.Collections.Generic.IList<T>

Views: 6109