Tuple in C# 4.0

C# 4.0 language includes a new feature called Tuple. Tuple provides us a way of grouping elements of different data type. That enables us to use it a lots places at practical world like we can store a coordinates of graphs etc.

In C# 4.0 we can create Tuple with Create method. This Create method offer 8 overload like following. So you can group maximum 8 data types with a Tuple. Followings are overloads of a data type.

• Create(T1)- Which represents a tuple of size 1
• Create(T1,T2)- Which represents a tuple of size 2
• Create(T1,T2,T3) – Which represents a tuple of size 3
• Create(T1,T2,T3,T4) – Which represents a tuple of size 4
• Create(T1,T2,T3,T4,T5) – Which represents a tuple of size 5
• Create(T1,T2,T3,T4,T5,T6) – Which represents a tuple of size 6
• Create(T1,T2,T3,T4,T5,T6,T7) – Which represents a tuple of size 7
• Create(T1,T2,T3,T4,T5,T6,T7,T8) – Which represents a tuple of size 8

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TakeWhile operator in linq

In this post I am going to explain TakeWhile Operator in details. TakeWhile is one of partitioning operator available in Linq. It will take sequence until condition becomes false.

Here is the example for that.

using System;
using System.Collections.Generic;
using System.Linq;
namespace Linq
{
class Program
{
  static void Main(string[] args)
  {
      int[] numbers ={10,9,8,7,6,5,4,3,2,1};

      foreach(var number in numbers.TakeWhile(n=>n>5))
      {
          Console.WriteLine(number);
      }
  }
}
}

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SkipWhile Method in Linq

I have been playing around linq and I have found great method call SkipWhile method. SkipWhile methods skips particular element which matches condition in predicate this can be use full in condition where we need to skip elements on particular condition.

So let’s take some example. I have written following console application code.

using System;
using System.Collections.Generic;
using System.Linq;
namespace Linq
{
  class Program
  {
      static void Main(string[] args)
      {
          string[] names = { "Jalpesh", "Jayesh", "Tushar", "Tejas", "Sanjay", "Nijesh" };
          foreach(var name in names.SkipWhile(s=>s.ToLower().StartsWith("j")))
          {
              Console.WriteLine(name);
          }
      }
  }
}

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