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How do I get indices of N maximum values in a NumPy array?
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In [2]: arr = np.array([1, 3, 2, 4, 5])
In [3]: arr.argsort()[-3:][::-1]
Out[3]: array([4, 3, 1])
This involves a complete sort of the array. I wonder if numpy provides a built-in way to do a partial sort; so far I haven't been able to find one.
If this solution turns out to be too slow (especi...
Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)
... @davejal Thanks a lot and no problem :) I din't want to be a jerk about it. Indeed a little more EQ could be nice out here :)
– Highmastdon
Jan 29 '16 at 9:24
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How to do scanf for single char in C [duplicate]
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This works for me try it out
int main(){
char c;
scanf(" %c",&c);
printf("%c",c);
return 0;
}
share
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improve this answer
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How to decide when to use Node.js?
I am new to this kind of stuff, but lately I've been hearing a lot about how good Node.js is. Considering how much I love working with jQuery and JavaScript in general, I can't help but wonder how to decide when to use Node.js. The web application I have in mind is something like Bitly - takes s...
Where is Python's sys.path initialized from?
...or the rank-and-file python programmer of what happens when python
figures out what to use as the initial values of sys.path,
sys.executable, sys.exec_prefix, and sys.prefix on a normal
python installation.
First, python does its level best to figure out its actual physical
location on the filesyst...
How do I make an HTML text box show a hint when empty?
...the absence of any styles, in Chrome this looks like:
You can try demos out here and in HTML5 Placeholder Styling with CSS.
Be sure to check the browser compatibility of this feature. Support in Firefox was added in 3.7. Chrome is fine. Internet Explorer only added support in 10. If you target ...
C# binary literals
...aring bit-based flag values in enums, I thought it would be worth pointing out a handy trick for this sort of thing. The left-shift operator (<<) will allow you to push a bit to a specific binary position. Combine that with the ability to declare enum values in terms of other values in the sam...
glVertexAttribPointer clarification
...es you make while the VAO is bound is kept, but that can easily be figured out with a test program. I guess you can think of glBindVertexArray(0); as binding to the "default" VAO...
Update: Someone brought to my attention the need for the actual draw call. As it turns out, you don't actually need...
How do I determine if a port is open on a Windows server? [closed]
...a server, but the port may be closed by a firewall. Is there a way to ping out or in, on a specific port, to see if it is open?
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Export to CSV via PHP
...array) == 0) {
return null;
}
ob_start();
$df = fopen("php://output", 'w');
fputcsv($df, array_keys(reset($array)));
foreach ($array as $row) {
fputcsv($df, $row);
}
fclose($df);
return ob_get_clean();
}
Then you can make your user download that file using someth...