From: ts <decoux@...>
Date: 2004-05-09T21:46:59+09:00
Subject: Re: How to get the last 5 elements of an array?

>>>>> "D" == David Alan Black <dblack@wobblini.net> writes:

D> "Robert Klemme" <bob.news@gmx.net> writes:

>> irb(main):001:0> class Array;def last(n);size>=n ? self[-n .. -1] :
>> self;end;end

D> Isn't that how Array#last works now?

 No, for 2 reasons
  * Array#last always return an object Array
  * it dup the return value when size < n

svg% cat b.rb
#!/usr/bin/ruby
class Array
   def lest(n)
      size>=n ?self[-n..-1]:self
   end

end

class A < Array
end

a = A.new(2, 1)
p a.lest(1).class
p a.last(1).class
svg% 

svg% b.rb
A
Array
svg% 


Guy Decoux