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Best way to make Java's modulus behave like it should with negative numbers?
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It behaves as it should a % b = a - a / b * b; i.e. it's the remainder.
You can do (a % b + b) % b
This expression works as the result of (a % b) is necessarily lower than b, no matter if a is positive or negative. Adding...
What and where are the stack and heap?
...re created on the stack , and reference types are created on the heap , without explaining what these two things are. I haven't read a clear explanation of this. I understand what a stack is. But,
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How do you check that a number is NaN in JavaScript?
I’ve only been trying it in Firefox’s JavaScript console, but neither of the following statements return true:
30 Answe...
Difference between “on-heap” and “off-heap”
...t subject to GC). As the off-heap store continues to be managed in memory, it is slightly slower than the on-heap store, but still faster than the disk store.
The internal details involved in management and usage of the off-heap store aren't very evident in the link posted in the question, so it wo...
Why is reading lines from stdin much slower in C++ than Python?
...sing Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misunderstanding something.
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What is makeinfo, and how do I get it?
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In (at least) Ubuntu when using bash, it tells you what package you need to install if you type in a command and its not found in your path. My terminal says you need to install 'texinfo' package.
sudo apt-get install texinfo
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How does one write code that best utilizes the CPU cache to improve performance?
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The cache is there to reduce the number of times the CPU would stall waiting for a memory request to be fulfilled (avoiding the memory latency), and as a second effect, possibly to reduce the overall amount of data that needs to be transfered (preserving memory bandwidth).
Techniques for avoidi...
When should you branch?
When working with a SCM system, when should you branch?
12 Answers
12
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Is there a cross-browser onload event when clicking the back button?
...t fire when the page loads as a result of a back button operation — it only fires when the page is first loaded.
15 A...
What regular expression will match valid international phone numbers?
...eed to determine whether a phone number is valid before attempting to dial it. The phone call can go anywhere in the world.
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