FAQ: Reference Fundamentals - Arrays of References

This community-built FAQ covers the “Arrays of References” exercise from the lesson “Reference Fundamentals”.

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The exercise doesn’t follow what the explanation says, while completely defeating the purpose of what has been explained in this lesson.
The starting code is this:

static void Main(string[] args)
{
Dissertation diss1 = new Dissertation(32, "Anna Knowles-Smith", "Refugees and Theatre");
Dissertation diss2 = new Dissertation(19, "Lajos Kossuth", "Shiny Happy People");
Diary dy1 = new Diary(48, "Anne Frank", "The Diary of a Young Girl");
Diary dy2 = new Diary(23, "Lili Elbe", "Man into Woman");
}

and the instructions tell me to create an array that contains diss1, diss2, dy1 and dy2.
This is what it accepts:
Book[] books = new Book[] {diss1, diss2, dy1, dy2}

Wouldn’t it be faster and better to just do this?

Book[] books = new Book[] 
{
new Dissertation(32, "Anna Knowles-Smith", "Refugees and Theatre"),
new Dissertation(19, "Lajos Kossuth", "Shiny Happy People"),
new Diary(48, "Anne Frank", "The Diary of a Young Girl"),
new Diary(23, "Lili Elbe", "Man into Woman")
};

and then the foreach loop still returns the same result.

1 Like

Instead of using an interface as suggested in the explanation to create an array, could an abstract class be used?

1 Like

i too think the same …

1 Like

What does your foreach loop look like?

I can’t get mine to print to the console.
This is mine:

foreach ( Book Title in books)
{
Console.WriteLine(Title);
}

I figured it out. lol

image