as far as I recall the definition of a range,
“” is part of the range (“”…“”)
I verified with irb and
(“”…“”) === “”
returns true
“” <=> “” returns 0 as expected,
“”.succ => “” which is not quite conclusive for me, but see below
anyway it seems inconsistent that
(“”…“”).to_a.include?(“”) returns false
while
(“”…“”) === “” returns true
No I have mimicked the bahvior with
class NilClass
def succ; nil; end
def <=>(other); 0; end
end
Guess what
(nil…nil).to_a returns ??
[nil] as expected
the behavior you described clearly seems to be a bug.
Regards
Robert
–
Deux choses sont infinies : l’univers et la bêtise humaine ; en ce qui
concerne l’univers, je n’en ai pas acquis la certitude absolue.
I initially thought it was because “”.succ == “” which is not correct,
however I created a custom class that returns itself when succ is
called:
class BadSucc
include Comparable
attr_accessor :value
def <=>(other)
self.value <=> other.value
end
def succ
self
end
end
But this did not seem to work
irb(main):002:0> b = BadSucc.new
=> #BadSucc:0x2dc49a8
irb(main):003:0> b.value = 1
=> 1
irb(main):008:0> (b…b).to_a
=> [#<BadSucc:0x2dc49a8 @value=1>]
So it seems like it might be a bug to me or there is some other reason
why (""…"").to_a returns empty while (b…b).to_a doesn’t.
Farrel
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