The first case for name inference in Projection initializers is wrong

[Xulei-NL]

Type of issue

Outdated article

Description

Hi there!

I was reading Anonymous Types. I tried to grasp three cases in the section Project initializers where the dotnet compiler would not be able to infer member names. The cases are as follows:

The member name isn't inferred in the following cases:

    The candidate name is a member name of an anonymous type, such as ToString or GetHashCode.
    The candidate name is a duplicate of another property member in the same anonymous type, either explicit or implicit.
    The candidate name isn't a valid identifier (for example, it contains spaces or special characters).

I doubt the first case The candidate name is a member name of an anonymous type, such as ToString or GetHashCode. I tried it in dotnetfiddle. However the code was compilable and runnable. Therefore I create this issue to see whether it is possible to delete the first case if I am right.

using System;
					
public class Program
{
	public static void Main()
	{
		var ToString = "hello world";
		var anAnonymous = new { ToString };
		Console.WriteLine(anAnonymous.ToString);
	}
}

What do you think? I'm looking forward to your input.

Page URL

https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/types/anonymous-types

Content source URL

https://github.com/dotnet/docs/blob/main/docs/csharp/fundamentals/types/anonymous-types.md

Document Version Independent Id

dd937177-98f0-a797-d49b-29332aae0614

Platform Id

ecfed45c-63aa-17f6-2cfc-88b1f8bc7adb

Article author

@BillWagner

Metadata

• ID: d1b30ebe-b640-449b-3602-9891a55794db
• PlatformId: ecfed45c-63aa-17f6-2cfc-88b1f8bc7adb
• Service: dotnet-csharp
• Sub-service: fundamentals

Related Issues

[BillWagner]

I looked through the pertinent sections of the C# standard, back to C# 3 (when anonymous types were introduced.)

The first rule was never part of the spec. It should be removed.

[Xulei-NL]

@BillWagner If so, I plan to make a PR to remove the first case!

[Xulei-NL]

@BillWagner I have made a PR #49113 and look forward the final merge.