Path: csiph.com!aioe.org!.POSTED!not-for-mail
From: =?UTF-8?Q?Arne_Vajh=c3=b8j?= <arne@vajhoej.dk>
Newsgroups: comp.lang.java.programmer
Subject: Re: double == double
Date: Sun, 16 Oct 2016 12:54:44 -0400
Organization: Aioe.org NNTP Server
Lines: 37
Message-ID: <nu0bcj$nbt$1@gioia.aioe.org>
References: <double-20161012130409@ram.dialup.fu-berlin.de> <ntledh$lfi$1@dont-email.me> <8737k0qd38.fsf@golem.phantasia.org> <87zim5es30.fsf@golem.phantasia.org> <nttf6l$nml$1@gioia.aioe.org> <ntu9de$6uj$1@dont-email.me> <ntuhmi$cdr$1@gioia.aioe.org> <ntuntn$slf$2@dont-email.me> <nu00a0$5sj$1@gioia.aioe.org> <nu00ks$edh$5@dont-email.me> <nu063a$edp$1@gioia.aioe.org> <nu075n$4cs$1@dont-email.me>
NNTP-Posting-Host: PBuS014lhzVyHjLbXmo/ZQ.user.gioia.aioe.org
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 8bit
X-Complaints-To: abuse@aioe.org
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0
X-Notice: Filtered by postfilter v. 0.8.2
Xref: csiph.com comp.lang.java.programmer:35787

On 10/16/2016 11:43 AM, 4ndre4 wrote:
> On 16/10/2016 16:24, Arne Vajhøj wrote:
>
> [...]
>> The model for dates in Java which you seem to suggest for version
>> numbers.
>
> Sorry, you seem to miss the point here (or maybe it's me?)
>
> You stated that you don't think that double nor String are good choices
> for version numbers.
>
> There's no logical reason to believe that, IMO.
>
> Strings are as good as double for version numbers, as long as you know
> the semantics of your values and hence you know how to process them.

But using String comparison does not work at all.

Using a Version class can have the right semantics. But then it is
no longer a String that is the version.

> Your StringVersion and DoubleVersion classes, for example, could
> implement Comparator<T> and its compare() and equals() methods.
>
> I don't see why that would be a problem.

You could have String carrying the version data and then
put all the methods working on the data in a VersionProcessor
class.

But I tend to like OO principles. And the above would be
about as non-OO'ish as something can be.

Arne