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How to create a private class method?
...method in a separate line. I personally don't like this usage but good to know that it exists.
private_class_method def self.method_name
....
end
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SQlite Getting nearest locations (with latitude and longitude)
...w PointF((float) lat, (float) lon);
return newPoint;
}
And now create your query:
PointF center = new PointF(x, y);
final double mult = 1; // mult = 1.1; is more reliable
PointF p1 = calculateDerivedPosition(center, mult * radius, 0);
PointF p2 = calculateDerivedPosition(center, mul...
How do you make a HTTP request with C++?
...
Update 2020: I have a new answer that replaces this, now 8-years-old, one: https://stackoverflow.com/a/61177330/278976
On Linux, I tried cpp-netlib, libcurl, curlpp, urdl, boost::asio and considered Qt (but turned it down based on the license). All of these were either incompl...
Convert list to tuple in Python
...nce you have used a tuple variable to hold a tuple (45, 34) earlier... So, now tuple is an object of type tuple now...
It is no more a type and hence, it is no more Callable.
Never use any built-in types as your variable name... You do have any other name to use. Use any arbitrary name for your va...
Tips for debugging .htaccess rewrite rules
...nd 301 redirected to URL C. Even if URL C was the ultimate goal, you will know that this is bad for SEO and needs to be fixed.
You will be able to see cache headers that were set on the server side, replay requests, modify request headers to test ....
...
What is the Sign Off feature in Git for?
...eated the patch in question, or that you certify that to the best of your knowledge, it was created under an appropriate open-source license, or that it has been provided to you by someone else under those terms. This can help establish a chain of people who take responsibility for the copyright sta...
Why does modern Perl avoid UTF-8 by default?
...ded as UTF‑8. Although once upon a time this pragma did other things, it now serves this one singular purpose alone and no other:
use utf8;
Declare that anything that opens a filehandle within this lexical scope but not elsewhere is to assume that that stream is encoded in UTF‑8 unless you tel...
Why is the order in dictionaries and sets arbitrary?
...gt;>> hash('bar') % 8
4
>>> hash('baz') % 8
4
Their order now depends on which key was slotted first; the second key will have to be moved to a next slot:
>>> {'baz': None, 'bar': None}
{'bar': None, 'baz': None}
>>> {'bar': None, 'baz': None}
{'baz': None, 'bar':...
Download File Using jQuery
...on.href = 'uploads/file.doc';
});
<a href="no-script.html">Download now!</a>
Even if there's no Javascript, at least this way the user will get some feedback.
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How do I undo 'git add' before commit?
...used to error out when
you do not have any commits in your history, but it now gives you
an empty index (to match non-existent commit you are not even on).
Documentation: git reset
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