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Is MATLAB OOP slow or am I doing something wrong?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Why does GCC generate such radically different assembly for nearly the same C code?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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What Every Programmer Should Know About Memory?
...r anyone involved in: game development, scientific computing, finance, databases, compilers, processing of large datasets, visualization, anything that has to handle lots of requests... So yes, if you are working in an application that is idle most of the time, like a text editor, the paper is compl...
Fastest way to determine if an integer's square root is an integer
... doing a bit-wise "and." Perfect squares can only end in 0, 1, 4, or 9 in base 16, So for 75% of your inputs (assuming they are uniformly distributed) you can avoid a call to the square root in exchange for some very fast bit twiddling.
Kip benchmarked the following code implementing the hex tric...
Which timestamp type should I choose in a PostgreSQL database?
...d like to define a best practice for storing timestamps in my Postgres database in the context of a multi-timezone project.
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Regular expression to match numbers with or without commas and decimals in text
...uestion was definitely more complex than it appeared. I updated my answer based on your feedback - it makes sense.
– Leons
May 7 '11 at 12:54
add a comment
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Draw a perfect circle from user's touch
...shape:
So it is not that hard to implement a circle detection mechanism based on that idea. See working demo below (Sorry, I'm using Java as the fastest way to provide this fast and a bit dirty example):
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.a...
Why doesn't Java offer operator overloading?
...t time you learn to do it, you write overloads everywhere as you would put base classes and inheritance everywhere (like, sweet irony, the Java API). But this passes quite fast and then you appreciate the possibility all the while not abusing it. My own 10-years+ experience about C++ is that the num...
Is quitting an application frowned upon?
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Derive all activities from a common AtivityBase. Then hold a flag to force close the app, in onResume check if the force close flag is set. If so call System.exit(0); This will cascade through the entire activity stack and finally get the app completely closed.
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How would you implement an LRU cache in Java?
...ad.
So here is the simplest version with a unit test that shows it works based on some other versions.
First the non-concurrent version:
import java.util.LinkedHashMap;
import java.util.Map;
public class LruSimpleCache<K, V> implements LruCache <K, V>{
Map<K, V> map = new...