How to make Foreach Loop run faster by C #

This article will explain in detail how C # makes the Foreach cycle run faster. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

How to make the Foreach loop run faster

Foreach is a ready-made statement that simply enumerates and manipulates the elements in the collection, as shown in the following example:

Using System; using System.Collections; namespace LoopTest {class Class1 {static void Main (string [] args) {/ / create an ArrayList of strings ArrayList array = new ArrayList (); array.Add ("Marty"); array.Add ("Bill"); array.Add ("George"); / / print the value of every item foreach (string item in array) {Console.WriteLine (item);}

You can use foreach statements in each collection that implements the Ienumerable interface. If you want to know more about the use of foreach, you can check out the C # Language Specification in the .NET Framework SDK documentation.

At compile time, the C # editor converts each foreach region.

IEnumerator enumerator = array.GetEnumerator (); try {string item; while (enumerator.MoveNext ()) {item = (string) enumerator.Current; Console.WriteLine (item);} finally {IDisposable d = enumerator as IDisposable; if (d! = null) d.Dispose ();}

This shows that in the background, the management of foreach will bring some extra code to your program to increase the system overhead.

This is the end of the article on "how to make the Foreach cycle run faster". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.