anchor.diff:      [| (5L, 'a'); (3L, 'b'); (11L, 'f'); (2L, 'd'); (17L, 'a'); (4L, 'g'); (12L, 'b'); (14L, 'c'); (11L, 'F'); (4L, 'G'); |]
       |> LongMap.ofArray
       |> LongMap.toArray
  -    |> assertEqual
  +    |> Collection.assertEqual
           [| (2L, 'd'); (3L, 'b'); (4L, 'G'); (5L, 'a'); (11L, 'F'); (12L, 'b'); (14L, 'c'); (17L, 'a'); |]
   
   [<Test>]
  
positive.code:     [| (5L, 'a'); (3L, 'b'); (11L, 'f'); (2L, 'd'); (17L, 'a'); (4L, 'g'); (12L, 'b'); (14L, 'c'); (11L, 'F'); (4L, 'G'); |]
      |> LongMap.ofArray
      |> LongMap.toList
      |> assertEqual
          [(2L, 'd'); (3L, 'b'); (4L, 'G'); (5L, 'a'); (11L, 'F'); (12L, 'b'); (14L, 'c'); (17L, 'a')]
  
  [<Test>]
  
negative.code: 
          elements
          |> ResizeArray.toArray
          |> Collection.assertEqual
              [| 102L; 102L; 77L; 105L; 85L; 115L; 119L; 121L; |]
  
  [<Test>]
  