大约有 16,000 项符合查询结果（耗时：0.0563秒） [XML]
Is there any way to put malicious code into a regular expression?
...ar Expression Matching Can Be Simple And Fast
(but is slow in Java, Perl, PHP, Python, Ruby, ...) talks about ways that most modern NFAs, which all seem to derive from Henry Spencer’s code, suffer severe performance degradation, but where a Thompson‐style NFA has no such problems.
If you only ...
How many socket connections can a web server handle?
...ic on 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 c...
Determine which MySQL configuration file is being used
...
Among all the other system calls, you will find something like:
stat64("/etc/my.cnf", 0xbfa3d7fc) = -1 ENOENT (No such file or directory)
stat64("/etc/mysql/my.cnf", {st_mode=S_IFREG|0644, st_size=4227, ...}) = 0
open("/etc/mysql/my.cnf", O_RDONLY|O_LARGEFILE) = 3
So, as you can see..it li...
Node.js + Nginx - What now?
... is what I have done in my Ubuntu box:
Create the file yourdomain.com at /etc/nginx/sites-available/:
vim /etc/nginx/sites-available/yourdomain.com
In it you should have something like:
# the IP(s) on which your node server is running. I chose port 3000.
upstream app_yourdomain {
server 12...
How to set the environmental variable LD_LIBRARY_PATH in linux
...le under Ubuntu the right way to do this is to add a custom .conf file to /etc/ld.so.conf.d, for example
sudo gedit /etc/ld.so.conf.d/randomLibs.conf
inside the file you are supposed to write the complete path to the directory that contains all the libraries that you wish to add to the system, fo...
Difference between BeautifulSoup and Scrapy crawler?
...an specify constraints on how many (number of) URLs you want to crawl and fetch,etc. It is a complete framework for web-scraping or crawling.
While
BeautifulSoup is a parsing library which also does a pretty good job of fetching contents from URL and allows you to parse certain parts of them witho...
How to add /usr/local/bin in $PATH on Mac
...on OS X are built using /usr/libexec/path_helper, called from the default /etc/profile. Start at man path_helper then add your paths in files in /etc/paths.d. You will find that pretty much every path setting example from other OSs includes $PATH because none of them seem to be able to commit to bei...
What is the motivation for bringing Symbols to ES6?
...The mechanism doesn't have to be reflection - C++, Java, C#, Ruby, Python, PHP, Objective-C all allow access one way or another if one really wants to. It's not really about ability but communication.
– Esailija
May 14 '14 at 15:48
...
How to make --no-ri --no-rdoc the default for gem install?
... Anyway to make this a system wide default without editing /etc/skel and every user's home directory?
– Hackeron
Jan 13 '11 at 3:43
42
...
Javascript regex returning true.. then false.. then true.. etc [duplicate]
.... In JavaScript, global regexen have state: you call them (with exec, test etc.) the first time, you get the first match in a given string. Call them again and you get the next match, and so on until you get no match and it resets to the start of the next string. You can also write regex.lastIndex= ...