Alias for Tuple in C# 12

From the blog, you will learn how to define an alias for a tuple type with C# 12.

Introduction

Aliastype is one of the new features from C# 12. In this blog, you will learn how to use this alias feature for the tuple type in C#. 

Alias for Tuple

Before C# 12, we can use the aliases for namespaces and named types like delegated, classes, interfaces, and structs. With C# 12, you can use the alias name for int, string, and many more types. Let’s see how to use the alias for the tuple. 

Since C# 12 is in preview, enable it from the project file by adding the LangVersion property, as shown in the below figure. 

You can define an alias for the tuple as given below,

using point3D = (int, int, int); 

public void TestAlias() {
  point3D point3D = (1, 2, 3);
  Console.WriteLine($"{point3D.Item1}, {point3D.Item2},{point3D.Item3}");
}

Next level, you can also define an alias for each item instead of Item1, Item2, and Item3 and give below. 

using point3D = (int x, int y, int z); 

public void TestAlias() {
  point3D point3D = (1, 2, 3);
  Console.WriteLine($"{point3D.x},{point3D.y},{point3D.z}");
}

Summary

We have seen how to use one of the cool features of C# 12, an alias of any type, with an example of defining an alias for the tuple type. We will see more on the C# 12 feature in my next blog.