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Count(*) vs Count(1) - SQL Server
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gbngbn
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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
...<a.length;i++)
a[i]++;// a is an int[], I benchmarked with size 32K
}
The result with and without the flag (on recent Haswell laptop, Oracle JDK 8u60):
-XX:+UseSuperWord : 475.073 ± 44.579 ns/op (nanoseconds per op)
-XX:-UseSuperWord : 3376.364 ± 233.211 ns/op
The assembly for the ...
How do I clone a subdirectory only of a Git repository?
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Jörg W MittagJörg W Mittag
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Disable Interpolation when Scaling a
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answered Aug 1 '12 at 2:32
Simon SarrisSimon Sarris
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Printf width specifier to maintain precision of floating-point value
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OneSeventh before = 0.1428571428571428 214571170656199683435261249542236328125
OneSeventh = 0.1428571428571428 49212692681248881854116916656494140625
OneSeventh after = 0.1428571428571428 769682682968777953647077083587646484375
Printing the exact decimal representation of a double has l...
What are important languages to learn to understand different approaches and concepts? [closed]
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– John Cromartie
May 11 '11 at 15:32
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How to send an email with Python?
...com").
– Tony Meyer
Jun 10 '11 at 2:32
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Small improvement: the file should be opened using with:...
Best Practice: Access form elements by HTML id or name attribute?
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DoinDoin
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Understanding MongoDB BSON Document size limit
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Many in the community would prefer no limit with warnings about performance, see this comment f...
What are the performance characteristics of sqlite with very large database files? [closed]
...rding to the SQLite Limits page, the maximum size of each database page is 32K. And the maximum pages in a database is 1024^3. So by my math that comes out to 32 terabytes as the maximum size. I think you'll hit your file system's limits before hitting SQLite's!
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