How to empty a list in C#?

How to empty a list in C#?

To empty a list in C#, you can use the Clear() method of the List<T> class. This method removes all items from the list.

Here's an example:

 List<int> myList = new List<int> { 1, 2, 3, 4 }; myList.Clear(); // removes all items from the list

After calling Clear(), myList will be an empty list.

Examples

  1. Clearing a List in C#

    Description: Developers may search for ways to remove all elements from a list in C# to free up memory and resources.

    // Create a list List<int> myList = new List<int>(); // Clear the list myList.Clear();

  2. Removing All Elements from a List in C#

    Description: This query involves removing all elements from a list in C# without deallocating the list itself.

    // Create a list List<int> myList = new List<int>(); // Remove all elements from the list myList.RemoveAll(item => true);

  3. Emptying a List and Releasing Memory in C#

    Description: Developers might want to empty a list in C# and ensure that the memory occupied by the list is released.

    // Create a list List<int> myList = new List<int>(); // Empty the list and release memory myList = new List<int>();

  4. Resetting a List to Empty in C#

    Description: This query involves resetting a list to an empty state in C# without creating a new list object.

    // Create a list List<int> myList = new List<int>(); // Reset the list to empty myList.Clear();

  5. Discarding All Items from a List in C#

    Description: Developers might search for methods to discard or remove all items from a list in C# without further processing.

    // Create a list List<int> myList = new List<int>(); // Discard all items from the list myList.RemoveAll(item => true);

  6. Removing Elements from a List and Keeping Capacity in C#

    Description: This query may involve removing elements from a list in C# while retaining the list's capacity for future use.

    // Create a list List<int> myList = new List<int>(); // Remove all elements from the list while keeping capacity myList.RemoveRange(0, myList.Count);

  7. Handling Concurrent Removal from a List in C#

    Description: Developers might want to safely remove all elements from a list in C# when multiple threads are involved.

    // Create a list List<int> myList = new List<int>(); // Clear the list safely lock (myList) { myList.Clear(); }

  8. Purging a List in C#

    Description: This query involves purging or emptying a list in C# to prepare it for new data.

    // Create a list List<int> myList = new List<int>(); // Purge the list myList = new List<int>();

  9. Emptying a List and Resizing Capacity in C#

    Description: Developers may search for ways to empty a list in C# while also resizing its internal capacity.

    // Create a list List<int> myList = new List<int>(); // Empty the list and resize capacity myList.Clear(); myList.TrimExcess();

  10. Optimizing List Removal Performance in C#

    Description: This query involves optimizing the performance of removing all elements from a list in C# while considering memory usage and execution speed.

    // Create a list List<int> myList = new List<int>(); // Optimize removal performance myList.Clear();

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