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Groups > comp.lang.java.programmer > #35791
| From | 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: double == double |
| Date | 2016-10-16 22:19 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <nu0qtc$eiu$1@dont-email.me> (permalink) |
| References | (10 earlier) <nu063a$edp$1@gioia.aioe.org> <nu075n$4cs$1@dont-email.me> <nu0bcj$nbt$1@gioia.aioe.org> <nu0dsb$kv3$3@dont-email.me> <nu0g1b$vt5$2@gioia.aioe.org> |
On 16/10/2016 19:14, Arne Vajhøj wrote:
[...]
> But that code is not using String as version
Erm... how about this? :) I don't see how this is less OO-ish than the
previous one, but hey... okay!...:
List<String> versions = new ArrayList<String>();
versions.add("1.9.0-123");
versions.add("1.10.0-123");
versions.add("1.7.0-123");
versions.add("1.7.0-123");
versions.add("1.7.0-10");
versions.add("1.7.0-9");
Collections.sort(versions, new VersionComparator());
...
static class VersionComparator implements Comparator<String> {
private static Pattern PATTERN = Pattern.compile(
"(\\d+)\\.(\\d+)\\.(\\d+)-(\\d+)");
class ParsedVersion {
int major;
int minor;
int patch;
int build;
boolean lessThan(ParsedVersion other) {
return major < other.major
|| minor < other.minor
|| patch < other.patch
|| build < other.build;
}
}
public int compare(String version1, String version2) {
try {
ParsedVersion pv1 = parse(version1);
ParsedVersion pv2 = parse(version2);
if (pv1.equals(pv2)) return 0;
if (pv1.lessThan(pv2)) return -1;
return 1;
} catch (InvalidVersionException e) {
throw new IllegalArgumentException(e);
}
}
private ParsedVersion parse(String versionAsString)
throws InvalidVersionException {
Matcher matcher = PATTERN.matcher(versionAsString);
if (!matcher.find()) {
throw new InvalidVersionException(versionAsString);
}
ParsedVersion parsedVersion = new ParsedVersion();
parsedVersion.major = Integer.valueOf(matcher.group(1));
parsedVersion.minor = Integer.valueOf(matcher.group(2));
parsedVersion.patch = Integer.valueOf(matcher.group(3));
parsedVersion.build = Integer.valueOf(matcher.group(4));
return parsedVersion;
}
}
--
4ndre4
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Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-12 09:39 -0400
Re: double == double Michael Jung <miju@golem.phantasia.org> - 2016-10-13 21:10 +0200
Re: double == double Michael Jung <miju@golem.phantasia.org> - 2016-10-15 14:04 +0200
Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-15 09:13 -0400
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-15 10:32 -0400
Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-15 10:46 -0400
Re: double == double Michael Jung <miju@golem.phantasia.org> - 2016-10-15 17:44 +0200
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-15 17:36 +0100
Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-15 14:15 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-15 19:41 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-15 20:39 -0400
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-15 10:41 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-15 23:09 +0100
Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-15 18:28 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 03:13 +0100
Re: double == double Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-16 08:37 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 14:06 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-15 20:30 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 03:16 +0100
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 03:18 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-16 09:45 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 14:51 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-16 11:24 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 16:43 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-16 12:54 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 18:37 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-16 14:14 -0400
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-16 22:19 +0100
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-16 22:49 -0400
Re: double == double a.laforgia@gmail.com - 2016-10-17 01:53 -0700
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-17 19:04 +0200
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-17 20:17 +0100
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-17 23:11 +0200
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-17 22:46 +0100
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-18 18:55 +0200
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-18 18:52 +0100
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-20 15:03 +0200
True O-O [Was: double == double] Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-17 18:06 -0400
Re: True O-O Patrick Roemer <sangamon@netcologne.de> - 2016-10-18 18:32 +0200
Re: True O-O [Was: double == double] Arne Vajhøj <arne@vajhoej.dk> - 2016-10-19 22:09 -0400
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-19 21:58 -0400
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-17 18:58 +0200
Re: double == double 4ndre4 <626401fd-4bc7-4f8f-b641-563ae0f72920@626401fd-4bc7-4f8f-b641-563ae0f72920.invalid> - 2016-10-17 20:32 +0100
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-17 23:21 +0200
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-19 21:38 -0400
Re: double == double Arne Vajhøj <arne@vajhoej.dk> - 2016-10-19 21:47 -0400
Re: double == double Patrick Roemer <sangamon@netcologne.de> - 2016-10-20 15:01 +0200
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