What is the => assignment in C# in a property signature

Question

I came across some code that said

public int MaxHealth => 
         Memory[Address].IsValid ? 
         Memory[Address].Read(Offs.Life.MaxHp)          


        

Answer 1

You can even write this:

    private string foo = "foo";

    private string bar
    {
        get => $"{foo}bar";
        set
        {
            foo = value;
        }
    }