[Haskell-cafe] Re: [Haskell] Re: Trying to install binary-0.4
simonmarhaskell at gmail.com
Tue Oct 16 09:05:52 EDT 2007
Bayley, Alistair wrote:
>> From: Simon Marlow [mailto:simonmarhaskell at gmail.com]
>> The lexicographical ordering would make 10.0 > 9.3. In
>> general, A.B > C.D
>> iff A > C or A == C && B > D. When we say the "latest"
>> version we mean
>> "greatest", implying that version numbers increase with time.
>> Does that help?
> Sort of. It's what I'd expect from a sensible version comparison. It's
> just not something I'd ever choose to call lexicographic ordering. IMO,
> lexicographgic ordering is a basic string comparision so e.g.
> max "10.0" "9.3" = "9.3"
> I'd call what you're doing numeric ordering. Does it have a better name,
> like version-number-ordering, or section-number-ordering (e.g. Section
> 3.2.5, Section 3.2.6)?
I've heard it called lexicographical ordering before, but I'm happy to call
it by whatever name induces the least confusion!
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