Issue #6203 has been updated by matz (Yukihiro Matsumoto). Assignee changed from matz (Yukihiro Matsumoto) to nobu (Nobuyoshi Nakada) The trailing nil must be a bug. Matz. ---------------------------------------- Bug #6203: Array#values_at does not handle ranges with end index past the end of the array https://bugs.ruby-lang.org/issues/6203#change-28061 Author: ferrous26 (Mark Rada) Status: Assigned Priority: Normal Assignee: nobu (Nobuyoshi Nakada) Category: core Target version: 2.0.0 ruby -v: trunk =begin When I use Array#values_at I expect that it would be the same as successive calls to (({Array#[]})). There is one case where this does not hold: a = [0,1,2,3,4,5] a[4..6] # => [4, 5] a.values_at(4..6) # => [4,5,nil] I think this is an inconsistency in the design of (({Array#values_at})). We can look at a more extreme case: a[4..100] # => [4, 5] a.values_at 4..100 # => [4, 5, nil] And now it doesn't make any sense. I think the best solution would be to make (({Array#values_at})) be equivalent to successive calls to (({Array#[]})). I have patched (({rb_range_beg_len()})) to handle the extra case and opened a pull request on github. =end -- http://bugs.ruby-lang.org/