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Regular expression to stop at first match
...n regex engines which implement the Perl 5 extensions (Java, Ruby, Python, etc) but not in "traditional" regex engines (including JavaScript, Awk, sed, grep without -P, etc).
– tripleee
Jul 8 at 17:52
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How to change file encoding in NetBeans?
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Go to etc folder in Netbeans home --> open netbeans.conf file and add
on netbeans_default_options following line:
-J-Dfile.encoding=UTF-8
Restart Netbeans and it should be in UTF-8
To check go to help --> about and check...
Differences between hard real-time, soft real-time, and firm real-time?
...ions such as pacemakers, a large number of defense applications, avionics, etc.
Firm/soft real time systems can miss some deadlines, but eventually performance will degrade if too many are missed. A good example is the sound system in your computer. If you miss a few bits, no big deal, but miss t...
Test a weekly cron job [closed]
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Just do what cron does, run the following as root:
run-parts -v /etc/cron.weekly
... or the next one if you receive the "Not a directory: -v" error:
run-parts /etc/cron.weekly -v
Option -v prints the script names before they are run.
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What does the [Flags] Enum Attribute mean in C#?
...mentation of your enum uses Flags, and so does Enum.IsDefined, Enum.Parse, etc. Try to remove Flags and look at the result of MyColor.Yellow | MyColor.Red; without it you get "5", with Flags you get "Yellow, Red". Some other parts of the framework also use [Flags] (e.g., XML Serialization).
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What is a bus error?
...ler accept all address in its range which would suggest that when the BARs etc are changed, it would have to internally
– Lewis Kelsey
Mar 10 '19 at 5:00
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Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
...itional support for developing (such as forms designers, resource editors, etc), compiling and debugging applications. e.g Eclipse, Visual Studio.
A Library is a chunk of code that you can call from your own code, to help you do things more quickly/easily. For example, a Bitmap Processing library w...
Why does the C++ STL not provide any “tree” containers?
...require a tree is, IMO, another argument for having an stl::red_black_tree etc. Finally, the std::map and std::set trees are balanced, an std::tree might not be.
– einpoklum
Jul 26 '16 at 15:59
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JSON left out Infinity and NaN; JSON status in ECMAScript?
...literal values is ES -- you either have to use an expression (eg. 1/0, 0/0 etc) or a property lookup (referring to Infinity or NaN). As those require code execution they cannot be included in JSON.
– olliej
Sep 15 '09 at 3:30
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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...控最大连接数。
服务端还需要调整一下系统的参数，在/etc/sysctl.conf中：
net.core.somaxconn = 2048
net.core.rmem_default = 262144
net.core.wmem_default = 262144
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 4096 16777216 ...