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How can I get all the request headers in Django?
...import re
regex = re.compile('^HTTP_')
dict((regex.sub('', header), value) for (header, value)
in request.META.items() if header.startswith('HTTP_'))
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Chrome Dev Tools: How to trace network for a link that opens a new tab?
...nk opens a new tab, and apparently the Dev Tools works per tab it was open for. "Preserve Log Upon Navigation" does not help.
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Random number generation in C++11: how to generate, how does it work? [closed]
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The question is way too broad for a complete answer, but let me cherry-pick a couple of interesting points:
Why "equally likely"
Suppose you have a simple random number generator that generate the numbers 0, 1, ..., 10 each with equal probability (think...
How to remove the first and the last character of a string
...ult = yourString.slice(1,-1);
console.log(result);
Documentation for the slice and substring.
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Creating C formatted strings (not printing them)
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Use sprintf.
int sprintf ( char * str, const char * format, ... );
Write formatted data to string Composes a string with the same text
that would be printed if format was used on printf, but instead of
being printed, the content is stored as a C string in the buffer
pointed ...
How to validate an Email in PHP?
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return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
}
Note: For other uses (where you need Regex), the deprecated ereg function family (POSIX Regex Functions) should be replaced by the preg family (PCRE Regex Functions). There are a small amount of differences, reading the Manual shou...
Uploading images using Node.js, Express, and Mongoose
Please consider newer answers that have more up-to-date information as things have changed over the years!
12 Answers
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Looping through localStorage in HTML5 and JavaScript
...der is implementation-defined but constant until you add or remove keys).
for (var i = 0; i < localStorage.length; i++){
$('body').append(localStorage.getItem(localStorage.key(i)));
}
If the order matters, you could store a JSON-serialized array:
localStorage.setItem("words", JSON.stringi...
How can I convert a series of images to a PDF from the command line on linux? [closed]
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Using imagemagick, you can try:
convert page.png page.pdf
Or for multiple images:
convert page*.png mydoc.pdf
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Reliable method to get machine's MAC address in C#
... to work on XP/Vista/Win7 32 and 64 bit as well as on those OSs but with a foreign language default. Many of the C# commands and OS queries don't work across OS. Any ideas? I have been scraping the output of "ipconfig /all" but this is terribly unreliable as the output format differs on every mac...