Hands-on exercises

1. Define generic classes by creating generic code of StringCalculator: https://github.com/garora/TDD-Katas/tree/develop/Src/cs/StringCalculator
2. Create a generic and non-generic collection and test which one is better as per performance.
3. We have discussed code snippets in the section-Why one should use Generics? that tells about run-time compilation exceptions. In this regard, why should we not use the same code in the following way?

internal class Program 
{ 
      private static void Main(string[] args) 
{ 
    //No exception at compile-time or run-time 
    ArrayList authorEditorArrayList = new ArrayList {
    "Gaurav Arora", 43, "Vikas Tiwari", 25 }; 
    foreach (var authorEditor in authorEditorArrayList) 
    { 
        WriteLine($"{authorEditor}"); 
    } 
}     
} 

1. What is the use of the default keyword in generic code, elaborate with the help of a real-world example.
2. Write simple code by using all 3-types of predefined attributes.
3. What is the default restriction type for...