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How to validate an email address using a regular expression?
...)+)\])
Here is diagram of finite state machine for above regexp which is more clear than regexp itself
The more sophisticated patterns in Perl and PCRE (regex library used e.g. in PHP) can correctly parse RFC 5322 without a hitch. Python and C# can do that too, but they use a different syntax fr...
ETag vs Header Expires
...request to the server at all. The closer you are to the Expires date, the more likely it is the client (or proxy) will make an HTTP request for that file from the server.
So really what you want to do is use BOTH headers - set the Expires header to a reasonable value based on how often the content...
How can I print a circular structure in a JSON-like format?
...on() { return 'whatever you think that is right'; }; (if you want anything more generic/specific, just try anything in the prototype tree: HTMLDivElement implements HTMLElement implements Element implements Node implements EventTarget; note: this may be browser-dependent, the previous tree is true f...
Recursive search and replace in text files on Mac and Linux
...d-line arguments allowed by the OS is breached; in that case find will run more than one instance.)
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Multi-line string with extra space (preserved indentation)
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Heredoc sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat
cat << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage
The string after <<...
Where to place JavaScript in an HTML file?
...l downloads. The HTTP/1.1 specification suggests that browsers download no more than two components in parallel per hostname. If you serve your images from multiple hostnames, you can get more than two downloads to occur in parallel. While a script is downloading, however, the browser won't start an...
What does the 'b' character do in front of a string literal?
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A little more plain language narrative around the quoted documentation would make this a better answer IMHO
– Hack-R
Jun 3 '17 at 16:24
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Why should I use an IDE? [closed]
...tc!
All of these save time. They're things I could do manually, but with more pain: I'd rather be coding.
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How do I include a pipe | in my linux find -exec command?
...e of xargs would be, that you can speed it with modern multi core cpu even more up, by using the -P switch (-P 0).
– flolo
Nov 20 '08 at 23:03
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What is the difference between currying and partial application?
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more or less, yes. If you only supply a subset of the arguments, you'll get back a function that accepts the rest of the arguments
– Mark Cidade
Oct 20 '08 at 11:27
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