C#中的let字句应用示例

usingSystem;

usingSystem.Linq;

namespaceUseLet

{

 classProgram

 {

 staticvoidMain()

 {

  string[] strings = {

  "A penny saved is a penny earned.",

  "The early bird catches the worm.",

  "The pen is mightier than the sword."

  };

  var earlyBirdQuery = from sentenceinstrings

     let words = sentence.Split(' ')

     from wordinwords

     let w = word.ToLower()

     where w[0] =='a'|| w[0] =='e'|| w[0] =='i'|| w[0] =='o'|| w[0] =='u'

     select word;

 foreach(var vinearlyBirdQuery)

  {

  Console.WriteLine(""{0}" starts with a vowel", v);

  }

  Console.WriteLine("Press any key to exit");

  Console.ReadLine();

 }

 }

}