大约有 900 项符合查询结果（耗时：0.0196秒） [XML]
Most efficient way to increment a Map value in Java
...nificantly faster, in that only they give a performance boost of more than 10%. However, if threading is an issue, AtomicLong might be more attractive than the others (I'm not really sure). I also ran TestForNull with final variables, but the difference was negligible.
Note that I haven't profiled ...
How do I find the caller of a method using stacktrace or reflection?
...his in a performance-critical area anyway. ;) A 1.6 JVM only seems to be ~10% slower and, as Software Monkey said, it expresses the intent better than the "new Exception" way.
– GaZ
Jul 7 '09 at 14:42
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Best practice for creating millions of small temporary objects
...or instance, if you have a young GC every 100ms that takes 10ms, you spend 10% of your time in the GC, and you have 10 collections per second (which is huuuuuge). In such a case, I would not spend any time in GC tuning, since those 10 GC/s would still be there.
3 - Some experience
I had a similar ...
How can I count text lines inside an DOM element? Can I?
...
}
countLines(document.getElementById("foo"));
div
{
padding:100px 0 10% 0;
background: pink;
box-sizing: border-box;
border:30px solid red;
}
<div id="foo">
x<br>
x<br>
x<br>
x<br>
</div>
...
Want to find records with no associated records in Rails
... 813ms / query
dmarkow's approach (:without_friends_v2) 891ms / query (~ 10% slower)
But then it occurred to me that I don't need the call to DISTINCT()... I'm looking for Person records with NO Contacts - so they just need to be NOT IN the list of contact person_ids. So I tried this scope:
sc...
Add a common Legend for combined ggplots
...n="bottom"))
# add the legend underneath the row we made earlier. Give it 10% of the height
# of one plot (via rel_heights).
p <- plot_grid( prow, legend_b, ncol = 1, rel_heights = c(1, .2))
p
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Fast way to get image dimensions (not filesize)
...of them have EXIF data then the slowness of using ImageMagick on the other 10% will be acceptable.
– Andy Lester
Jul 17 '13 at 17:53
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Why should you use an ORM? [closed]
...ules are not easily formed in declarative constraints. E.g. "customer gets 10% off entire order the first time they buy more than three pairs of slacks from the same brand." How would you put that business rule into the database (keep in mind an answer involving stored procedures is clunky).
...
CSS hexadecimal RGBA?
...t HEX prefix
0% 0.00 00
5% 12.75 0C
10% 25.50 19
15% 38.25 26
20% 51.00 33
25% 63.75 3F
30% 76.50 4C
35% 89.25 59
40% 102.00 66
45% ...
An error occurred while validating. HRESULT = '8000000A'
...t time. Not nice, but it works most of the time (error rate is down from ~ 10% to ~ 1%).
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