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Is file append atomic in UNIX?
...he size of 'PIPE_BUF' is supposed to be atomic. That should be at least 512 bytes, though it could easily be larger (linux seems to have it set to 4096).
This assume that you're talking all fully POSIX-compliant components. For instance, this isn't true on NFS.
But assuming you write to a log fi...
Remove characters except digits from string using Python?
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112
In Python 2.*, by far the fastest approach is the .translate method:
>>> x='aaa12333bb...
How many socket connections can a web server handle?
...n a single Unix flavoured OS machine - https://blog.whatsapp.com/index.php/2012/01/1-million-is-so-2011/.
And finally, this one, http://highscalability.com/blog/2013/5/13/the-secret-to-10-million-concurrent-connections-the-kernel-i.html, goes into a lot of detail, exploring how even 10 million could...
How to serialize an Object into a list of URL query parameters?
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22 Answers
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Java 8 Streams - collect vs reduce
...n would do a great deal of string copying, and the run
time would be O(n^2) in the number of characters. A more performant
approach would be to accumulate the results into a StringBuilder,
which is a mutable container for accumulating strings. We can use the
same technique to parallelize mut...
Split a collection into `n` parts with LINQ?
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128
A pure linq and the simplest solution is as shown below.
static class LinqExtensions
{
pub...
How do I use Linq to obtain a unique list of properties from a list of objects?
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323
IEnumerable<int> ids = list.Select(x=>x.ID).Distinct();
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Deep copying an NSArray
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210
As the Apple documentation about deep copies explicitly states:
If you only need a one-level-...
Convert date to datetime in Python
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answered Dec 21 '09 at 0:33
kiamlalunokiamlaluno
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Threading pool similar to the multiprocessing Pool?
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answered Aug 2 '10 at 9:52
MartinMartin
10.7k66 gold badges2929 silver badges3030 bronze badges
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