Unique ways to use the null coalescing operator [closed]

Answer 1

Another thing to consider is that the coalesce operator doesn't call the get method of a property twice, as the ternary does.

So there are scenarios where you shouldn't use the ternary operator, for example:

public class A
{
    var count = 0;
    private int? _prop = null;
    public int? Prop
    {
        get 
        {
            ++count;
            return _prop
        }
        set
        {
            _prop = value;
        }
    }
}

If you use:

var a = new A();
var b = a.Prop == null ? 0 : a.Prop;

the getter will be called twice and the count variable will be equal to 2, and if you use:

var b = a.Prop ?? 0

the count variable will be equal to 1, as it should.