Csharp/C Sharp/LINQ/Any

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Версия от 14:38, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Any operator with an string array

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; public class MainClass {

   public static void Main() {
       string[] presidents = {"G", "H", "a", "H", "over", "Jack"};
       bool any = presidents.Any();
       Console.WriteLine(any);
   }

}

</source>


Any with condition

<source lang="csharp"> using System; using System.Collections; using System.Collections.Generic; using System.Text; using System.Linq; public class MainClass{

  public static void Main(){
      int[] numbers = { 2, 6, 1, 5, 10 };
      Console.WriteLine("Is there at least one odd number?");
      Console.Write(numbers.Any(e => e % 2 == 1) ? "Yes, there is" : "No, there isn"t");
  }

}

</source>


Any with false predicate

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; public class MainClass {

   public static void Main() {
       string[] presidents = {"G", "H", "a", "H", "over", "Jack"};
       bool any = presidents.Any(s => s.StartsWith("A"));
       Console.WriteLine(any);
   }

}

</source>


Any with string operator

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; public class MainClass {

   public static void Main() {
       string[] presidents = {"G", "H", "a", "H", "over", "Jack"};
       bool any = presidents.Any(s => s.StartsWith("Z"));
       Console.WriteLine(any);
   }

}

</source>


Contains, Any return a bool value

<source lang="csharp"> using System; using System.Collections.Generic; using System.Linq; public class MainClass {

   public static void Main() {
       int[] numbers = { 10, 9, 8, 7, 6 };
       bool hasTheNumberNine = numbers.Contains(9);          // true
       bool hasMoreThanZeroElements = numbers.Any();          // true
       bool hasAnOddElement = numbers.Any(n => n % 2 == 1);  // true
   }

}

</source>


Use Quantifiers: Any

<source lang="csharp"> using System; using System.Collections.Generic; using System.Linq; using System.Text; public class MainClass {

   public static void Main() {
       string[] words = { "bei", "rie", "rei", "field" };
       bool iAfterE = words.Any(w => w.Contains("ei"));
       Console.WriteLine("There is a word that contains in the list that contains "ei": {0}", iAfterE);
   }

}

</source>