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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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Generating random integer from a range
...integer in given range (including border values). I don't unreasonable quality/randomness requirements, I have four requirements:
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How do you specify a byte literal in Java?
...is considered an integer (or long if followed by a "L"), so you must explicitly downcast it to a byte to pass it as a parameter. As far as I know there is no shortcut.
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Finalize vs Dispose
...ll called a destructor in the language specification), so I'll just add a little about the scenarios where the Finalize method comes in handy.
Some types encapsulate disposable resources in a manner where it is easy to use and dispose of them in a single action. The general usage is often like this...
What is the difference between “git init” and “git init --bare”?
What is the different between git init and git init --bare ? I found that a lot of blog post requires --bare for their Git server?
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Is it correct to use JavaScript Array.sort() method for shuffling?
I was helping somebody out with his JavaScript code and my eyes were caught by a section that looked like that:
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What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
... is a lot faster than Python's SimpleHTTPServer. This is primarily because it uses asynchronous IO for concurrent handling of requests, instead of serialising requests.
Installation
Install node.js if you haven't already. Then use the node package manager (npm) to install the package, using the -g o...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
Warning: This question is a bit heretical... religious programmers always abiding by good practices, please don't read it. :)
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Can you call Directory.GetFiles() with multiple filters?
...e types, such as mp3 's and jpg 's. I have tried both of the following with no luck:
26 Answers
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When should you use constexpr capability in C++11?
It seems to me that having a "function that always returns 5" is breaking or diluting the meaning of "calling a function". There must be a reason, or a need for this capability or it wouldn't be in C++11. Why is it there?
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