Why does string EndsWith and StartsWith equals true with string.Empty in c# and explain the reason behind this, why it is this way.
string str = "string"; Console.WriteLine(str.EndsWith(string.Empty)); // returns true... why? Console.WriteLine(str.StartsWith(string.Empty)); // returns true... why? The empty string is a substring of every string and also occurs in every possible position – that includes at the start and the end.
Picture it this way: Each character in the needle has to occur in the same sequence at the start or end of the string. And the universal quantifier (∀) over an empty set is always true.
Why shouldn't it?
string.Empty + "string" + string.Empty = "string" 