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Java's Atomic and volatile, under the hood on x86
It’s well known that volatile in Java doesn’t mean the same thing as atomic . As Jeremy Manson says :
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An Introduction to Condition Handling for Non-Lispers
One of Common Lisp’s more advanced features is its condition handling system, which is a powerful generalisation of other languages’ exception handling systems. I first became aware of condition handling from Peter Seibel’s Practical Common Lisp , chapter 19 . But if I’m honest I’ve only very recently understood what…
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Reading Other People's Code
I really enjoy reading other people’s code, it allows you see how others solve common problems, and sometimes even provide parables on what you shouldn’t do with yours. It also teaches the much needed skill of reading other people’s code. Now, ask yourself two questions: 1. how
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Learning to Learn
I believe the key thing that has helped me to become successful and will continue to do so, is my ability to learn how to learn about a subject and self educate. When you take ownership for the learning process, you start putting knowledge into action.
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C Programming Puzzlers
These questions originally appeared as an article on programmersheaven.com , written by Ashok K. Pathak, a researcher at Bharat Electronics Limited (CRL), Ghaziabad. They are reproduced here with minor modifications.
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Hopefully more controversial programming opinions
It's not about technology for its own sake. It's about being able to implement your ideas.
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Going Simple with JavaScript
I was making a change to a page that needed to pull from a remote API and make changes to various parts of the page. Sounds like the time to pull out jQuery and Ajax, doesn't it? Instead, I just u...
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The Caves of Clojure
Lately I've had an urge to start playing a few games again, namely Nethack and Dwarf Fortress (the latter being triggered by this book ). Aside from being incredibly fun, they also made me want to play around with writing a roguelike game of my own.
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Factorization diagrams in Haskell
Meta Title: Math, Sports Data & IPTV: A Portugal Guide Meta Description: Explore how math-minded sports fans use IPTV in Portugal to watch live football, Champi
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Why we didn't use a bloom filter
Josiah Carlson talks about Redis, Python, and other technology topics.
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Myths about Hash Tables
A hash table is data structure that is used to search for exact matches to a search key. For searching, they work like this: Take a search key (example: the word “cat”) Hash the search …
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One sentence per line, please
I give some advice each year in my annual Sphinx tutorial at PyCon . A grateful student asked where I myself had learned the tip. I have done some archæology and finally have an answer. Let me share what I teach them about “semantic linefeeds,” then I will reveal its source — which turns out to have been written when…
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Writing Browser Extensions - Comparing Firefox, Chrome and Opera
MediaPlus is a browser extension that gives users more control over media elements like video, images, games, flash, etc by allowing them t...
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Ideas for Raspberry Pi Projects
 Ideas for your Raspberry Pi!The chances are you have a Raspberry Pi or there's one on the way to you, n
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Moving Django to GitHub: the postmortem
We finally moved Django to GitHub late yesterday. Here's a postmortem, to keep the community updated and for the benefit of any projects that take this leap in the future.
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Kolmogorov Complexity - A Primer
The Complexity of Things Previously on this blog (quite a while ago), we’ve investigated some simple ideas of using randomness in artistic design (psychedelic art, and earlier randomized css …
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OrmHate
Object-Relational Mappers get a lot of hate from people who misjudge the complexities of the task.
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The Switch from Heroku to Hardware
Shop a wide selection of domains at HugeDomains.com. Find the right domain name today.
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The birthday paradox in action: calculating the probability of a hash collision
You may feel like you've seen this before. If you have, skip to the end where I talk about a formula, and discuss the relevance to parameters in computer hashing algorithms. In particular, I'm going to talk about how large hash spaces should be to avoid collisions with a given level of probability. If there are just…