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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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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...
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 base64 encoding require padding if the input length is not divisible by 3?
...ally it seems you can't, for example the implementations in javascript and php don't support this. Starting with a concatenated string, you either have to decode 4 bytes at a time or split the string after padding characters. It seems like those implementations just ignore the padding chars, even wh...
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 ...
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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Open Redis port for remote connections
...the bind option to allow remote access on the redis server?
Before (file /etc/redis/redis.conf)
bind 127.0.0.1
After
bind 0.0.0.0
and run sudo service redis-server restart to restart the server. If that's not the problem, you might want to check any firewalls that might block the access.
Imp...
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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How can I have grep not print out 'No such file or directory' errors?
...significantly faster than standard grep. (Perhaps it ignores binary files, etc? No idea, but useful.)
– Daniel
Mar 24 at 14:12
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