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Groups > comp.lang.java.programmer > #30750
| From | v_borchert@despammed.com (Volker Borchert) |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Recommended way to make shallow copy of array |
| Date | 2015-01-19 20:15 +0000 |
| Organization | Private site at Eddersheim, Germany |
| Message-ID | <m9jokq$3ih$1@Gaia.teknon.de> (permalink) |
| References | <m93su6$n1u$1@Gaia.teknon.de> <m944pq$58h$1@news.albasani.net> |
Sebastian wrote: > - use System.arraycopy (useful in particular when copying parts of an > array) That's what Array.copyOf() and Arrays.copyOfRange() do. > The for-loop, copyOf and System.arraycopy styles clearly have > independent storage, a clone of a one-dimensional array has independent > storage, but the clone of a multi-dimensional array does not. > > System.arraycopy seems to have slightly better performance. > Arrays.copyOf is easiest to use with dynamic typing. The question is, what happens when the JIT kicks in and starts inlining and/or intrinsifying... > Differences between the various methods are small, however, and might be > regarded a micro-optimization. OK that should do, at least for now and until proven wrong. Thanks -- "I'm a doctor, not a mechanic." Dr Leonard McCoy <mccoy@ncc1701.starfleet.fed> "I'm a mechanic, not a doctor." Volker Borchert <v_borchert@despammed.com>
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Recommended way to make shallow copy of array v_borchert@despammed.com (Volker Borchert) - 2015-01-13 19:50 +0000
Re: Recommended way to make shallow copy of array Joerg Meier <joergmmeier@arcor.de> - 2015-01-13 22:40 +0100
Re: Recommended way to make shallow copy of array Joerg Meier <joergmmeier@arcor.de> - 2015-01-13 22:44 +0100
Re: Recommended way to make shallow copy of array Sebastian <news@seyweiler.dyndns.org> - 2015-01-13 23:04 +0100
Re: Recommended way to make shallow copy of array Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-01-13 18:00 -0500
Re: Recommended way to make shallow copy of array v_borchert@despammed.com (Volker Borchert) - 2015-01-19 20:15 +0000
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