parameters: (self, i)
docstring: Return the value at the i'th index of the vector.
          @param i the vector index
          @return the value at the i'th index of the vector.
docstring_summary: Return the value at the i'th index of the vector.
docstring_tokens: Return the value at the i th index of the vector .
function: def __getitem__(self, i):
          """
          Return the value at the i'th index of the vector.
          @param i the vector index
          @return the value at the i'th index of the vector.
          """
          if i == 0:
              return self.d0
          elif i == 1:
              return self.d1
          else:
              return self.d2
function_tokens: def __getitem__ ( self , i ) : if i == 0 : return self . d0 elif i == 1 : return self . d1 else : return self . d2