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Fastest way to list all primes below N
This is the best algorithm I could come up.
35 Answers
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Best way of returning a random boolean value
I've been using this for some time to return either true or false when building fake seed data. Just wondering if anybody has a better, more succinct or verbose way of returning either true or false .
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Simple Digit Recognition OCR in OpenCV-Python
I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would like to learn both KNearest and SVM features in OpenCV.
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Is there a NumPy function to return the first index of something in an array?
I know there is a method for a Python list to return the first index of something:
13 Answers
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How to set Sqlite3 to be case insensitive when string comparing?
I want to select records from sqlite3 database by string matching. But if I use '=' in the where clause, I found that sqlite3 is case sensitive. Can anyone tell me how to use string comparing case-insensitive?
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How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
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What is the difference between BIT and TINYINT in MySQL?
In which cases would you use which? Is there much of a difference? Which I typically used by persistence engines to store booleans?
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Is there a printf converter to print in binary format?
I can print with printf as a hex or octal number. Is there a format tag to print as binary, or arbitrary base?
52 Answer...
How to give border to any element using css without adding border-width to the whole width of elemen
How to give border to any element using css without adding border-width to the whole width of element?
11 Answers
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Generate random numbers using C++11 random library
As the title suggests, I am trying to figure out a way of generating random numbers using the new C++11 <random> library. I have tried it with this code:
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