LINQ Partitioning Operator

最新推荐文章于 2019-09-21 04:36:48 发布

最新推荐文章于 2019-09-21 04:36:48 发布 · 68 阅读

本文通过具体的C#代码示例介绍了LINQ中的Take、Skip、TakeWhile和SkipWhile等方法的应用。这些方法用于从集合中选取元素，例如获取前几个元素、跳过前几个元素、基于条件选取元素等。

private static readonly int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 }; static void Main() { UseTakeMethod(); UseSkipMethod(); UseTakeWhileMethod(); UseSkipWhileMethod(); } public static void UseTakeMethod() { var takeNumbers = numbers.Take(3); Console.WriteLine("First three numbers"); foreach (var number in takeNumbers) { Console.WriteLine("{0}", number); } } public static void UseSkipMethod() { var skipNumbers = numbers.Skip(4); Console.WriteLine("Get all but skip first four element"); foreach (var number in skipNumbers) { Console.WriteLine("{0}", number); } } public static void UseTakeWhileMethod() { var takeWhileNumbers = numbers.TakeWhile((n, index) => n > index); Console.WriteLine("Get first element not less than position"); foreach (var number in takeWhileNumbers) { Console.WriteLine("{0}", number); } } public static void UseSkipWhileMethod() { var skipWhileNumbers = numbers.SkipWhile(n => n > 2); Console.WriteLine("A specify condition is true that return remaining elements"); foreach (var number in skipWhileNumbers) { Console.WriteLine("{0}", number); } }