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Version number comparison in Python
I want to write a cmp -like function which compares two version numbers and returns -1 , 0 , or 1 based on their compared valuses.
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~x + ~y == ~(x + y) is always false?
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Assume for the sake of contradiction that there exists some x and some y (mod 2n) such that
~(x+y) == ~x + ~y
By two's complement*, we know that,
-x == ~x + 1
<==> -1 == ~x + x
Noting this result, we have,
~(x+y) == ~x + ~y
<==> ~(x+y) + (x+y) == ~x + ~y...
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:
12 Answers
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How do you check whether a number is divisible by another number (Python)?
...le of 5. The way I thought I'd do this would be to divide the number by 3, and if the result is an integer then it would be a multiple of 3. Same with 5.
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How can I create directory tree in C++/Linux?
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With C++17 or later, there's the standard header <filesystem> with
function
std::filesystem::create_directories
which should be used in modern C++ programs.
The C++ standard functions do not have the POSIX-specific explicit
permissions (mode) argument, t...
How to create SBT project with IntelliJ Idea?
I just got started with Scala/LiftWeb/Sbt developing, and I'd like to import a Sbt project in IntelliJ Idea.
Actually, I managed to import my project in two different ways:
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Force the origin to start at 0
How can I set the origin / interception of the y-axis and x-axis in ggplot2?
3 Answers
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The $.param( ) inverse function in JavaScript / jQuery
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You should use jQuery BBQ's deparam function. It's well-tested and documented.
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How does this CSS produce a circle?
...f 180 pixels?
Let's reformulate that into two questions:
Where do width and height actually apply?
Let's have a look at the areas of a typical box (source):
The height and width apply only on content, if the correct box model is being used (no quirks mode, no old Internet Explorer).
Where d...
How do you add swap to an EC2 instance?
I'm currently running an ec2 micro instance and i've been finding that the instance occasionally runs out of memory.
10 Ans...