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How to delete files/subfolders in a specific directory at the command prompt in Windows
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Use single percentage sign if you wish to run direct from command line e.g. %p
– Alex
Mar 9 '14 at 8:24
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config.assets.compile=true in Rails production, why not?
...d assets very fast, and the serving of the files themselves are web-server-from-the-filesystem fast. Both dramatically faster than live compiling.
To get the maximum advantage of the pipeline and fingerprinting, you need to set far-future headers on your web server, and enable gzip compression for ...
Extracting text OpenCV
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You can detect text by finding close edge elements (inspired from a LPD):
#include "opencv2/opencv.hpp"
std::vector<cv::Rect> detectLetters(cv::Mat img)
{
std::vector<cv::Rect> boundRect;
cv::Mat img_gray, img_sobel, img_threshold, element;
cvtColor(img, img_g...
How can I parse a time string containing milliseconds in it with python?
...roseconds. You may be better off using datetime, like this:
>>> from datetime import datetime
>>> a = datetime.strptime('30/03/09 16:31:32.123', '%d/%m/%y %H:%M:%S.%f')
>>> a.microsecond
123000
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Number of days between two NSDates [duplicate]
...of calendar days between two dates:
+ (NSInteger)daysBetweenDate:(NSDate*)fromDateTime andDate:(NSDate*)toDateTime
{
NSDate *fromDate;
NSDate *toDate;
NSCalendar *calendar = [NSCalendar currentCalendar];
[calendar rangeOfUnit:NSCalendarUnitDay startDate:&fromDate
inter...
How do I concatenate two lists in Python?
...l first unpack the contents of the iterables and then simply create a list from the contents.
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How to allocate aligned memory only using the standard library?
...mask() into a general purpose allocation function, the single return value from the allocator would have to encode the release address, as several people have indicated in their answers.
Problems with interviewers
Uri commented: Maybe I am having [a] reading comprehension problem this morning, but...
When is assembly faster than C?
...ed a lot.
C doesn't have a full-multiplication operator (2N-bit result from N-bit inputs). The usual way to express it in C is to cast the inputs to the wider type and hope the compiler recognizes that the upper bits of the inputs aren't interesting:
// on a 32-bit machine, int can hold 32-bit...
jQuery - prevent default, then continue default
...-> in async callback fill some fields in the form -> submit the form from the callback"
– The Godfather
Oct 11 '16 at 14:49
1
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How do I uniquely identify computers visiting my web site?
... one possible fingerprinting algorithm, and collected these
fingerprints from a large sample of browsers that visited our test side,
panopticlick.eff.org. We observe that the distribution of our finger-
print contains at least 18.1 bits of entropy, meaning that if we pick a
brow...