Re: Built-ins for hashes - keys, values and entries?
Randall R Schulz <[email protected]>
| Newsgroups | gmane.comp.web.freemarker.user |
|---|---|
| Message-ID | <[email protected]> |
On Friday 13 June 2008 08:42, Zemian Deng wrote: > Hi list, > > Is there a reason not to add a "entries" to hashes built-in that's > similar to java.util.Map#entrySet? > > AFAIK, looping over java.util.Map via entry set is much faster than > looping a key set then retrieve value by each key on all items. For what it's worth, that may be true of Sun's implementation of a hashed map, but Trove4J's implementation is the opposite, since it does not use the memory-wasting chained-buckets technique. I guess the point is that low-level performance considerations like this are incidental, not intrinsic. > -Zemian Randall Schulz ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php