C# | CharEnumerator.Clone() Method

CharEnumerator.Clone Method is used to create a copy of the current CharEnumerator object. This is useful for saving the current state while iterating through a String object.

Syntax:

public object Clone ();

Return Value: This method returns an Object which is a copy of the current CharEnumerator object with the current state of the CharEnumerator object.

Below are the programs to illustrate the use of CharEnumerator.Clone() Method:

Example 1:

// C# program to illustrate the 
// CharEnumerator.Clone Method 
using System; 
  
class GFG { 
  
    // Driver code 
    public static void Main() 
    { 
        // Initialize a string object 
        string str = "The Sun rises in the East,sets in the West."; 
  
        // Instantiate a CharEnumerator object 
        CharEnumerator chEnum = str.GetEnumerator(); 
  
        while (chEnum.MoveNext())  
        { 
            // Printing the characters 
            Console.Write(chEnum.Current); 
  
            // Break when a space is encountered 
            if (chEnum.Current == ',')  
            { 
                Console.WriteLine(); 
                break; 
            } 
        } 
  
        // Instantiate a copy of CharEnumerator 
        // object with the current state 
        CharEnumerator chEnumCopy = (CharEnumerator)chEnum.Clone(); 
  
        // Printing the rest of the characters 
        while (chEnumCopy.MoveNext()) 
            Console.Write(chEnumCopy.Current); 
    } 
} 

Output:

The Sun rises in the East,
sets in the West.

Example 2:

// C# program to illustrate the 
// CharEnumerator.Clone Method 
using System; 
  
class GFG { 
  
    // Driver code 
    public static void Main() 
    { 
        // Initialize a string object 
        string str = "1234567"; 
  
        // Instantiate a CharEnumerator object 
        CharEnumerator chEnum = str.GetEnumerator(); 
  
        while (chEnum.MoveNext()) 
        { 
            // Print current character 
            Console.Write(chEnum.Current + " "); 
  
            // Instantiate a copy of CharEnumerator  
            // object with current state 
            CharEnumerator chEnumCopy = (CharEnumerator)chEnum.Clone(); 
  
            // Printing all characters  
            // after the current position 
            while (chEnumCopy.MoveNext()) 
                Console.Write(chEnumCopy.Current + " "); 
  
            Console.WriteLine(); 
        } 
    } 
} 

Output:

1 2 3 4 5 6 7 
2 3 4 5 6 7 
3 4 5 6 7 
4 5 6 7 
5 6 7 
6 7 
7

Reference:

https://docs.microsoft.com/en-us/dotnet/api/system.charenumerator.clone?view=netframework-4.7.2

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