Discussion on: C# For Beginners - Lesson 9: Arrays

[Kristina (Coding Mama)]

Hi, thanks for reading!

I'm using Dotnet Interactive Notebooks extension in VSCode. It's linked in this article: dev.to/coding_mama/c-for-beginners...

Regarding question 2, it's entirely possible to make that assumption! However, if it's an object array technically the elements are not int or string but would be object type. So the statement would still be false.

Thanks again for your comment! 😊

[David Kröll]

Thanks for your reply!

Hmm, I can't fully agree with your above argument, since the underlying (concrete) type does not change when you store something inside a object array.

See the following example:

var arr = new object[] {"some string", 42};

Console.WriteLine($"Type: {arr[0].GetType()}, Value: {arr[0]}");
Console.WriteLine($"Type: {arr[1].GetType()}, Value: {arr[1]}");

// Output: 
// Type: System.String, Value: some string
// Type: System.Int32, Value: 42

Other types for the array would also work, they just have to satisfy both int and string, for example IComparable.

[Kristina (Coding Mama)]

Ah, in that case I stand corrected 😊 though I haven't really introduced the object type in this course, so the expected answer was false. I should probably reword that question to make it exact!

Thanks for the clarification!