Pattern matching equal null vs is null

Question

From Microsoft new-features-in-c-7-0:

public void PrintStars(object o)
{
    if (o is null) return;     // constant pattern \"null\"
    if (!(o is int i)) r         


        

Answer 1

The differences between "is" and == is "is" special that it act as == if you compare to value and act as typeof(type) when you compare type of object to type.