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Introduction Hi, I’m Glenn Fiedler and welcome to Networking for Game Programmers. Have you ever wondered how multiplayer games work? From the outside it seems magical: two or more players sharing a consistent experience across the network like they actually exist together in the same virtual world. But as programmers we know the truth of what is actually going on underneath is quite different fro
What Every C Programmer Should Know About Undefined Behavior #1/3 People occasionally ask why LLVM-compiled code sometimes generates SIGTRAP signals when the optimizer is turned on. After digging in, they find that Clang generated a "ud2" instruction (assuming X86 code) - the same as is generated by __builtin_trap(). There are several issues at work here, all centering around undefined behavior in
Over the last few years since I started paying attention to SEO I have noticed many “developer guides to SEO”. Largely, these guides are written by developers and not SEO experts. At this point, I am neither of those, but since I spent the last few years working for an SEO tools company, I managed to garner quite a bit of knowledge on the topic. Of course, the things I love about SEO, are the th
The idea here is that most of us should already know most of what is on this list. But there just might be one or two items you haven't really looked into before, don't fully understand, or maybe never even heard of. Interface and User Experience Be aware that browsers implement standards inconsistently and make sure your site works reasonably well across all major browsers. At a minimum test agai
First written in 2006 or before. Last modified 3 Mar 2015. Some notes about time: UTC: The time at zero degrees longitude (the Prime Meridian) is called Coordinated Universal Time (UTC is a compromise between the French and English initialisms) GMT: UTC used to be called Greenwich Mean Time (GMT) because the Prime Meridian was (arbitrarily) chosen to pass through the Royal Observatory in Greenwich
I’m Joel Spolsky, a software developer in New York City. More about me. Read the archives in dead-tree format! Many of these articles have been collected into four books, available at your favorite bookstore. It’s an excellent way to read the site in the bath, or throw it at your boss. Ready to level up? Stack Overflow Jobs is the job site that puts the needs of developers first. Whether you want
What Every Computer Scientist Should Know About Floating-Point Arithmetic Note – This appendix is an edited reprint of the paper What Every Computer Scientist Should Know About Floating-Point Arithmetic, by David Goldberg, published in the March, 1991 issue of Computing Surveys. Copyright 1991, Association for Computing Machinery, Inc., reprinted by permission. Abstract Floating-point arithmetic i
What Every Programmer Should Know About Memory Ulrich Drepper Red Hat, Inc. drepper@redhat.com November 21, 2007 Abstract As CPU cores become both faster and more numerous, the limiting factor for most programs is now, and will be for some time, memory access. Hardware designers have come up with ever more sophisticated memory handling and acceleration techniques–such as CPU caches–but these canno
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