Month: October 2022

• IDisposable
  • SupressFinalize in IDisposable
• Asynchronous programming in .NET
  • async/await
  • Avoid deadlock with async/await
  • Does async/await creates new thread?
  • CPU bound vs I/O bound tasks
  • SynchronizationContext
  • Threads/tasks
  • locking in .NET
    • locking with integer
  • TPL
  • ThreadPool
• Type system
  • Reference types vs value types
    • value types as fields in objects
  • What kind of types cannot be object field?
  • ref struct types
  • Strings in .NET
  • Data Structures
  • Generics
  • Covariance and Contravariance
  • Equals and GetHashCode
• Garbage Collector
  • Is it possible to block GC?
• Records
• Compilation and runtime
  • Jit
  • AOT
  • Deployment models
• Reflection
• Pattern matching
• EntityFramework
  • Entity Framework eager and lazy loading
  • Entity Framework Change Tracking
• Linq
• Expression Trees
• ASP.NET
  • Owin model and Kestrell request handling
  • Kestrell
  • Middleware in OWIN
    • What Middleware can do?
  • ASP.NET Core global exception handling
  • ASP.NET Core controller level exception handling
  • Difference between Controller and ControllerBase
• Open – for you to consider
  • new .NET features
  • new C# features

Custom implementation is usually only necessary if default, reference equality is not enough. In example:

• entities value based equality
• value equality of deserialized objects
• custom comparisons based on other criterias

public class ImaginaryNumber : IEquatable<ImaginaryNumber>
{
    public double RealNumber { get; set; }
    public double ImaginaryUnit { get; set; }

    public override bool Equals(object obj)
    {
        return Equals(obj as ImaginaryNumber);
    }

    public bool Equals(ImaginaryNumber other)
    {
        return other != null &&
               RealNumber == other.RealNumber &&
               ImaginaryUnit == other.ImaginaryUnit;
    }

    public override int GetHashCode()
    {
        return HashCode.Combine(RealNumber, ImaginaryUnit);
    }
}