C 14 Feature: Using Unbound Generic Types with nameof

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C 14 introduces a new capability allowing the use of unbound generic types as arguments to nameof. For example:

Console.WriteLine(nameof(List<>)); // Output: "List" 

Previously, only closed generic types (e.g., List<int>) were permitted. This enhancement simplifies reflection and dynamic type handling in large-scale applications.

You Should Know:

1. Practical Use Cases

  • Reflection & Dynamic Code Generation:
    Type openGeneric = typeof(List<>); 
    Console.WriteLine(nameof(List<>)); // Helps avoid hardcoding strings 
    
  • Logging & Debugging:
    Debug.WriteLine($"Processing type: {nameof(Dictionary<,>)}"); 
    

2. Linux & Windows Commands for .NET Developers

  • Compile & Run C 14 Code (Linux):
    dotnet new console -n CSharp14Demo 
    cd CSharp14Demo 
    dotnet add package Microsoft.Net.Compilers.Toolset --version 4.8.0 
    dotnet run 
    
  • Check .NET SDK Version:
    dotnet --version 
    
  • Windows PowerShell (Check Installed Runtimes):
    dotnet --list-runtimes 
    

3. Advanced Example: Dynamic Type Resolution

var typeName = nameof(List<>); 
Type genericType = Type.GetType($"System.Collections.Generic.{typeName}`1"); 
Console.WriteLine(genericType?.FullName); 

4. Expected Performance Impact

  • No runtime overhead—resolved at compile time.
  • Reduces magic strings in reflection-heavy code.

Prediction

This feature will be widely adopted in ORMs (e.g., Entity Framework) and serialization libraries to simplify generic type handling.

What Undercode Say

C continues to evolve, bridging gaps between static and dynamic typing. This update, while subtle, enhances meta-programming. For Linux/.NET interoperability, consider these commands:

 List all dotnet processes (Linux) 
ps aux | grep dotnet

Monitor .NET app memory usage 
top -p $(pgrep -f "MyApp.dll") 

Expected Output:

List 
System.Collections.Generic.List`1[bash] 

Reference:

.NET Blog – C 14 Preview

References:

Reported By: Okyrylchuk C – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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