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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
..., sqrt). A worker/wrapper transformation gives us:
$ time ./so
842161320
real 0m7.954s
user 0m7.944s
sys 0m0.004s
That's right, 7.95 seconds. Consistently half a second faster than the C solution. Without the -fllvm flag I'm still getting 8.182 seconds, so the NCG back...
Hide separator line on one UITableViewCell
... UIImageView *line = [[UIImageView alloc] initWithFrame:CGRectMake(0, 44, 320, 2)];
line.backgroundColor = [UIColor redColor];
[cell addSubview:line];
}
for iOS 7 upper versions (including iOS 8)
if (indexPath.row == self.newCarArray.count-1) {
cell.separatorInset = UIEdgeInsetsMake(0...
Make absolute positioned div expand parent div height
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answered Aug 22 '12 at 10:20
feeelafeeela
25.3k66 gold badges5454 silver badges6666 bronze badges
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How do I install and use curl on Windows?
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20
Was there a curl.exe file there? Run that. Alternatively, copy curl.exe that and any files that have .dll extension to a directory that is ...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...still have much overhead
Some shared memory measurement:
September 14, 2009 – Solace Systems announced today that its Unified Messaging Platform API can achieve an average latency of less than 700 nanoseconds using a shared memory transport.
http://solacesystems.com/news/fastest-ipc-m...
Retrieving the last record in each group - MySQL
... WHERE rn = 1;
Below is the original answer I wrote for this question in 2009:
I write the solution this way:
SELECT m1.*
FROM messages m1 LEFT JOIN messages m2
ON (m1.name = m2.name AND m1.id < m2.id)
WHERE m2.id IS NULL;
Regarding performance, one solution or the other can be better, d...
Is log(n!) = Θ(n·log(n))?
...on.
– Mehrdad Afshari
Jan 19 '10 at 20:34
33
You don't need Sterling's approximation for a lower ...
How to restore the permissions of files and directories within git if they have been modified?
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Java LinkedHashMap get first or last entry
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answered Dec 20 '09 at 17:58
skaffmanskaffman
374k9292 gold badges779779 silver badges744744 bronze badges
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How to convert floats to human-readable fractions?
...in / UC Irvine / 8 Aug 1993
**
** With corrections from Arno Formella, May 2008
**
** usage: a.out r d
** r is real number to approx
** d is the maximum denominator allowed
**
** based on the theory of continued fractions
** if x = a1 + 1/(a2 + 1/(a3 + 1/(a4 + ...)))
** then best approximation i...