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Groups > comp.lang.java.programmer > #24909
| Date | 2013-08-07 13:02 +0300 |
|---|---|
| From | Donkey Hottie <donkey@fredriksson.dy.fi> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Cost of creating objects? |
| References | <ktstsp$59k$1@news.albasani.net> |
| Message-ID | <phi9da-p0l.ln1@tempest.fredriksson.dy.fi> (permalink) |
07.08.2013 10:44, Sebastian kirjoitti:
> @Override
> public int compare(AttrValue o1, AttrValue o2)
> {
> Long ts1 = o1.getEffectiveSequenceNumber(); // ??
> Long ts2 = o2.getEffectiveSequenceNumber(); // ??
> return ts1.compareTo(ts2);
> }
>
> Would you expect a measureable impact of creating these
> variables ts1, ts2, instead of "inlining" the calls to
> getEffectiveSequenceNumber(). (Using JDK 6?)
>
> How can I reason about this things, probably influenced by
> JIT, without doing actually measurements, say as part of a
> code inspection?
>
> -- Sebastian
>
What is getEffectiveSequenceNumber() returning?
If Long, there is no way to prevent the creation of a Long.
If long, try and use long variables instead, and manually code the
comparison code, it's not that complicated anyway.
--
Try to value useful qualities in one who loves you.
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Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 09:44 +0200
Re: Cost of creating objects? Donkey Hottie <donkey@fredriksson.dy.fi> - 2013-08-07 13:02 +0300
Re: Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 12:05 +0200
Re: Cost of creating objects? Donkey Hottie <donkey@fredriksson.dy.fi> - 2013-08-07 14:08 +0300
Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 08:08 -0400
Re: Cost of creating objects? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-08-07 20:14 -0700
Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:17 -0300
Re: Cost of creating objects? Joerg Meier <joergmmeier@arcor.de> - 2013-08-07 12:37 +0200
Re: Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 19:51 +0200
Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 15:51 -0400
Re: Cost of creating objects? Lew <lewbloch@gmail.com> - 2013-08-07 16:52 -0700
Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 20:51 -0400
Re: Cost of creating objects? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-08 11:24 +0300
Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-08 10:07 +0100
Re: Cost of creating objects? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-08 17:34 +0300
Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-08 10:42 -0400
Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-08 20:45 +0100
Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-08 10:38 -0400
Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-08 10:13 -0400
Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-07 20:28 -0400
Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:34 -0300
Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-07 19:19 +0100
Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-07 19:24 +0100
Re: Cost of creating objects? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-08-07 20:03 -0700
Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:39 -0300
Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-07 20:24 -0400
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