nameof – Tarik Billa

Why can nameof not be used with alias-qualified types at the root level?

December 29, 2023 by Tarik

Answer to underlying question if you came here for compile-time desision – there is no way at this moment. It is an expected behavior from compilator side as result of expression compilation. Quick runtime solution (typeof(f::SomeCustomClassName)).Name instead of nameof(f::SomeCustomClassName) Explanation Now lets see again to nameof_expression (link) nameof_expression = ‘nameof’ ‘(‘ named_entity ‘)’ where named_entity … Read more

ReSharper highlights use of nameof with “Explicit argument passed to parameter with caller info attribute”

September 23, 2023 by Tarik

was just wondering if the above warning is something I should worry about. When you have CallerMemberName attribute attached, you don’t have to explicitly pass a value, because the attribute will do exactly that for you. It will find the caller’s name and use it, making your nameof declaration redundant. This is of course assuming … Read more

Get the name of a variable (like nameof operator in C#) [duplicate]

September 13, 2023 by Tarik

This is my own answer in Q&A style which comes with a bit of a compromise. The trick is here to pass the parameter to the function nameof inside an object by enclosing it in curly braces, like this nameof({myVariable}) instead of nameof(myVariable). Following this convention, the solution can look like this: var HD = … Read more

Is there any way for the nameof operator to access method parameters (outside of the same method)?

August 10, 2023 by Tarik

No. There is no way to get the parameter names from the outside of the method using nameof. nameof doesn’t work for method parameters if you want the name on the calling side (for the callee it does work obviously). The other methods you mentioned, like reflection, do work. var parameterNames = typeof(Program) .GetMethod(nameof(Program.Main)).GetParameters() .Select(p … Read more

Difference between nameof and typeof

August 6, 2023 by Tarik

Two reasons: nameof turns into a compile-time constant. typeof(…).Name requires a bit of reflection. It’s not overly expensive, but it can hurt in some cases. Second, it’s used for other things than type names. For example, arguments: void SomeMethod(int myArgument) { Debug.WriteLine(nameof(myArgument)); } You can also get the name of class members and even locals. … Read more

Can C# nameof operator reference instance property without instance?

May 28, 2023 by Tarik

In the past, the documentation explicitly explained this, reading in part: In the examples you see that you can use a type name and access an instance method name. You do not need to have an instance of the type… [emphasis mine] This has been omitted in the current documentation. However, the examples still make … Read more

nameof equivalent in Java

May 23, 2023 by Tarik

It can be done using runtime byte code instrumentation, for instance using Byte Buddy library. See this library: https://github.com/strangeway-org/nameof The approach is described here: http://in.relation.to/2016/04/14/emulating-property-literals-with-java-8-method-references/ Usage example: public class NameOfTest { @Test public void direct() { assertEquals(“name”, $$(Person.class, Person::getName)); } @Test public void properties() { assertEquals(“summary”, Person.$(Person::getSummary)); } }

Why does nameof return only last name?

May 18, 2023 by Tarik

Note that if you need/want the “full” name, you could do this: $”{nameof(order)}.{nameof(User)}.{nameof(Age)}”.GetLastName(); as long as all of these names are in the current scope. Obviously in this case it’s not really all that helpful (the names won’t be in scope in the Razor call), but it might be if you needed, for example, the … Read more

How to use C# nameof() with ASP.NET MVC Url.Action

May 8, 2023 by Tarik

I like James’ suggestion of using an extension method. There is just one problem: although you’re using nameof() and have eliminated magic strings, there’s still a small issue of type safety: you’re still working with strings. As such, it is very easy to forget to use the extension method, or to provide an arbitrary string … Read more

Using nameof to get name of current method

April 23, 2023 by Tarik

You can’t use nameof to achieve that, but how about this workaround: The below uses no direct reflection (just like nameof) and no explicit method name. Results.Add(GetCaller(), result); public static string GetCaller([CallerMemberName] string caller = null) { return caller; } GetCaller returns the name of any method that calls it.