void M()
{
var d = new DefaultToString();
Console.WriteLine(d.ToString()); // BAD
var s = "hello " + d; // BAD
new A().ToString(); // GOOD
new B().ToString(); // GOOD
var ints = new int[] { 1, 2, 3 };
Console.WriteLine(ints); // BAD
Console.WriteLine(string.Join(", ", ints)); // GOOD
s = "hello " + ints; // BAD
s = "hello " + string.Join(", ", ints); // GOOD
s = "" + NullableE; // GOOD
E e = E.A;
Console.WriteLine(e); // GOOD
C c = new D();
Console.WriteLine(c); // GOOD
}
void M()
{
var d = new DefaultToString();
Console.WriteLine(d.ToString()); // BAD
var s = "hello " + d; // BAD
new A().ToString(); // GOOD
new B().ToString(); // GOOD
var ints = new int[] { 1, 2, 3 };
Console.WriteLine(ints); // BAD
Console.WriteLine(string.Join(", ", ints)); // GOOD
s = "hello " + ints; // BAD
s = "hello " + string.Join(", ", ints); // GOOD
s = "" + NullableE; // GOOD
E e = E.A;
Console.WriteLine(e); // GOOD
C c = new D();
Console.WriteLine(c); // GOOD
var sb = new StringBuilder();
sb.Append(new char[] { 'a', 'b', 'c' }, 0, 3); // GOOD
IPrivate f = null;
Console.WriteLine(f); // BAD
IPublic g = null;
Console.WriteLine(g); // GOOD
}