IsA

Returns true if the given object is of the specified type, false otherwise.

• Use the is operator to check if obj is of the given type, T.

public static partial class _30s 
{
  public static bool IsA<T>(object obj) 
  {
    return obj is T;
  }
}

string s = "fooBar";

_30s.IsA<string>(s); // true
_30s.IsA<int>(s); // false