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Indexers

An indexer is a special kind of property that allows you to access an object as if it were an array, even though it's a custom class or struct. It enables the use of the square bracket [] syntax for getting or setting values within an object.

What does it do?

An indexer allows you to treat your class like an array or collection. It lets you get or set values from a collection inside the object using an index, just like you would with an array.

Recap: - Indexers allow you to use the [] syntax for accessing elements inside a class or struct. - They work like properties, but with an index parameter. - Indexers can be defined to access any internal collection like arrays, lists, or dictionaries inside the class.

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public class MyClass
{
    private int[] numbers = { 1, 2, 3, 4, 5 };

    public int this[int index]  // Indexer definition
    {
        get
        {
            return numbers[index];  // Return value at the given index
        }
        set
        {
            numbers[index] = value;  // Set value at the given index
        }
    }
}