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Why is pow(a, d, n) so much faster than a**d % n?
I was trying to implement a Miller-Rabin primality test , and was puzzled why it was taking so long (> 20 seconds) for midsize numbers (~7 digits). I eventually found the following line of code to be the source of the problem:
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How to efficiently concatenate strings in go
In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string.
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Cooler ASCII Spinners? [closed]
In a console app, an ascii spinner can be used, like the GUI wait cursor, to indicate that work is being done. A common spinner cycles through these 4 characters: '|', '/', '-', '\'
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How to do exponentiation in clojure?
How can I do exponentiation in clojure?
For now I'm only needing integer exponentiation, but the question goes for fractions too.
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Get last n lines of a file, similar to tail
I'm writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom.
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New line in JavaScript alert box
How do you put in a new line into a JavaScript alert box?
20 Answers
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What are the mathematical/computational principles behind this game?
My kids have this fun game called Spot It! The game constraints (as best I can describe) are:
9 Answers
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What's the opposite of head? I want all but the first N lines of a file
Given a text file of unknown length, how can I read, for example all but the first 2 lines of the file? I know tail will give me the last N lines, but I don't know what N is ahead of time.
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Find XOR of all numbers in a given range
You are given a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
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NumPy array initialization (fill with identical values)
I need to create a NumPy array of length n , each element of which is v .
7 Answers
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