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• HTG Explains: Learn How Websites Are Tracking You Online

  - by Chris Hoffman

  Some forms of tracking are obvious – for example, websites know who you are if you’re logged in. But how do tracking networks build up profiles of your browsing activity across multiple websites over time? Tracking is generally used by advertising networks to build up detailed profiles for pinpoint ad-targeting. If you’ve ever visited a business’ website and seen ads for that business on other websites later, you’ve seen it in action. Here’s How to Download Windows 8 Release Preview Right Now HTG Explains: Why Linux Doesn’t Need Defragmenting How to Convert News Feeds to Ebooks with Calibre

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• Beginner Geek: Everything You Need To Know About Browser Extensions

  - by Chris Hoffman

  Browser extensions extend your web browser with additional features, modify web pages, and integrate your browser with the other services you use. This guide will introduce you to the world of browser extensions and help you get started. If you’re a geek, this stuff is obvious to you. We geeks take this for granted — we know exactly what browser extensions can do, when to use them, and what to avoid. But not everyone knows all this stuff.    

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• How to create realistic 2d lighting using colour temperature

  - by Truncheon

  I'm looking for a lighting algorithm that produces realistic lights expressed in kelvins, from about 2500k to 6500k. What I'm confused about is how to make the lights properly interact with the colors of game objects. If a whole level is fully lit (overcast daylight) then it would seem that I should use just the color of the object. But what if I'm in a closed room with no windows, and there is an incandescent bulb shining light in the room? How would that light properly light up the objects in the room? There does not seem to be an obvious solution to the problem. And simply mixing the color of the light with the colors of the object, seems an inaccurate approach.

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• How should I store a Game Database on Android?

  - by Liam

  I'm looking at creating a game for Android and while I have most of the ins and outs worked out, the one thing I'm struggling with is how to store data for the game. Ultimately, the game will be based off of a lot of pre-defined data and statistics so the obvious choice to me would be something like SQLite, but as I'm pretty new to the realm of Android and Game Development, I'm not 100% certain if this is the right route to follow. The data will be general pre-defined data as well as player data (along the lines of careers stats - what place finished, etc). I was wondering if there was a better/best practice solution that wasn't SQLite and that would provide said functionality and if so, could you point me in the right direction?

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• 'Situations gone wrong' for web apps...

  - by AvgJoe007

  Hi all I know there's some decent material floating around relating to more specific areas, but wanted to get some opinions from people who have had bad experiences in the past. I have a project where I can have a say on the design of a B2C web app, which has some external API interfaces. UX is crucial as is speed. Not sure what technology will be used at this stage. In designing this application, I want to make sure obvious features are not left out (i.e. ones that make maintenance/development easier). So can you guys tell me about 'situations gone wrong' that could have been avoided had more consideration taken place? Am looking to gather feedback in general, so don't worry if your example is industry/technology specific - so long as it pertains to web. Thanks for reading, I look forward to your responses!

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• What are the most important languages to localize for on the iOS App Store?

  - by Kevin Y

  It's obvious that to gain more customers on any given platform, one of the most important steps to take would be to localize your software into many languages: as many as possible, ideally. However, with independently developed apps, it tends to be difficult to localize into many different languages, due to not having the budget and / or time to do so. My question is if I were to localize my apps into languages other than English on the iOS App Store, which languages should I prioritize? (Maybe the top three or four most important.) (Also, let's pretend this is a generic app that won't cater more to one language demographic than another.)

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• Google Analytics Export API - nextPagePath data

  - by Btibert3

  I am probably missing something obvious, but I do not understand when I query: start.date = DATE_START, end.date = DATE_END, dimensions = c("ga:pagePath","ga:previousPagePath"), metrics = c("ga:pageviews"), filters = mypageofinterest, table.id = "ga:mytable", max.results=RESULTS my data return as expected, all of the previous pages including (entrance). However, when I modify the code to be nextPagePath start.date = DATE_START, end.date = DATE_END, dimensions = c("ga:pagePath","ga:nextPagePath"), metrics = c("ga:pageviews"), filters = mypageofinterest, table.id = "ga:mytable", max.results=RESULTS only one line of data are returned; the pagepath and nextpagepath are identical with itself. I replicated this result using the Query Explorer. What am I missing or doing wrong? I was expecting to see a large number of "next" pages, including (exit). Thanks in advance.

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• NetBeans 7.3 Beta2 is Out!

  - by Ondrej Brejla

  NetBeans 7.3 Beta2 was published today. You can download it. You could read about the PHP features added to the NetBeans 7.3 release here on the blog, but the main features added or improved are: Parsers for Namespaced Annotations (Symfony 2, Doctrine 2, etc.), Basic Composer Integration (Dependency Manager for PHP), Twig Code Completion (with documentation), Smarty Braces Matching for Related Tags, Smarty Parser Errors of Unmatched Tags. As obvious you can help us to test the build. Just try it and if you find an issue / error, please report it. Thanks for your help.

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• About floating point precision and why do we still use it

  - by system_is_b0rken

  Floating point has always been troublesome for precision on large worlds. This article explains behind-the-scenes and offers the obvious alternative - fixed point numbers. Some facts are really impressive, like: "Well 64 bits of precision gets you to the furthest distance of Pluto from the Sun (7.4 billion km) with sub-micrometer precision. " Well sub-micrometer precision is more than any fps needs (for positions and even velocities), and it would enable you to build really big worlds. My question is, why do we still use floating point if fixed point has such advantages? Most rendering APIs and physics libraries use floating point (and suffer it's disadvantages, so developers need to get around them). Are they so much slower? Additionally, how do you think scalable planetary engines like outerra or infinity handle the large scale? Do they use fixed point for positions or do they have some space dividing algorithm?

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• How to identify potential for becoming a programmer

  - by Jacob Spire

  There's heaps of information out there on hiring someone who's already a programmer. (Or claims to be one.) But what about identifying someone who has the potential to become a programmer, with little or no knowledge? Aside from the obvious things to look for (smart, gets things done), are there any interview questions and/or tests to determine whether one has the potential to become a programmer? Note: I'm not asking how to tell whether I can learn programming, but how to tell someone else is right for it.

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• Display current layout (language code/country flag) in keyboard indicator

  - by Jono

  Just upgraded from 10.04 to 10.10, and the keyboard indicator applet no longer displays the two-letter country code for the active layout. This is terrible. Is this the default behaviour? Anyone using two layouts can't tell which language they're in. I can't seem to find the setting for this, it used to be in the preferences for keyboard layout. Update 1: In case this wasn't obvious - I have two keyboard layouts - English and Hebrew. I just upgraded form 10.04, where the country code (USA/IL) was displayed, overlaid on the flag. Now all I get is a vague keyboard icon, and can't find the settings for this. Update 2: this seems to be a bug that people have been reporting since Lucid, and is now back in Maverick

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• How to prepare a game for localization?

  - by kevin42

  Many projects don't think about localization until the game is done. Then localization is done as a hack, and it's obvious that it was added on later. Some specific areas of concern: Text strings (obviously) Audio clips such as music and/or narratives Text rendered on textures (e.g. a label on a crate) Text rendered in frames in pre-rendered movies Fonts/Character sets for different languages Etc. What are some good ways to prepare for these challenges in the initial development stages, so you can make it easier without incurring too much cost up front?

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• Windows 7 Display Color Calibration Wizard

  Windows 7 comes complete with plenty of new features for you to get the most out of your PC. While some of them may be obvious the operating system has some tools that can help make your life easier. This series will discuss those tools and how to use them. To kick things off let s take a look at the Display Color Calibration Wizard.... Comcast? Business Class - Official Site Learn About Comcast Small Business Services. Best in Phone, TV & Internet.

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• pgadmin III doesn't work due to "The server lacks instrumentation functions."

  - by Chaz SLiger

  When pgAdmin III is used to open a PostgreSQL database the following message appears. There does not seem to be any obvious package listed in the Ubuntu Software Center for this. The server lacks instrumentation functions. pgadmin III uses some support functions that are not available by default in all PostgreSQL versions. These enable some tasks that make life easier when dealing with log files and configuration files. The adminpack is installed and activated by default if you are running the one-click installer of PostgreSQL. On Unix, you may have to install the contrib package, either with your package installer tool or by compilation.

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• Stop KDE services from running

  - by Gabriel

  I recently installed KDE with the command sudo apt-get install kubuntu-desktop. Now whenever I log into Unity I can see KDE-related services running in the background and I see no obvious way to prevent them from opening at startup. I checked bum but I see nothing there. These are the services I see running right now: kde4 klauncher knotify4 These ones I can identify as being related to KDE given their names, but there could be more. How can I prevent these services from launching by themselves? I should mention I often use KDE applications such as kate, okular and kile. Could these be responsible for opening those services?

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• Declarative Transactions in Node.js

  - by James Kingsbery

  Back in the day, it was common to manage database transactions in Java by writing code that did it. Something like this: Transaction tx = session.startTransaction(); ... try { tx.commit(); } catch (SomeException e){ tx.rollback(); } at the beginning and end of every method. This had some obvious problems - it's redundant, hides the intent of what's happening, etc. So, along came annotation-driven transactions: @Transaction public SomeResultObj getResult(...){ ... } Is there any support for declarative transaction management in node.js?

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• How to install Edubuntu on a system with low memory (256 Mb)?

  - by int_ua

  I'm preparing an old system with 256 Mb RAM to send it to some children. It doesn't have Ethernet controller and there are no Internet access at the destination. I've chosen Edubuntu for obvious reasons and modified it with UCK trying to minimize memory usage just to install, let alone using it yet. But Ubiquity won't start even in openbox (edited /etc/lightdm/lightdm.conf) because there are no space left on /cow right after booting. I've already deleted things like ibus, zeitgeist, update-manager (no network access after all), twisted-core, plymouth logos. I'm thinking about creating a swap partition on HDD, can it be later added to expand this /cow ? Is there a package for the text-mode installation which is used on Alternate CDs? I don't want to re-create Edubuntu from an Alternate CD. This behavior is reproducible in VM limited to 256Mb RAM.

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• When designing a job queue, what should determine the scope of a job?

  - by Stuart Pegg

  We've got a job queue system that'll cheerfully process any kind of job given to it. We intend to use it to process jobs that each contain 2 tasks: Job (Pass information from one server to another) Fetch task (get the data, slowly) Send task (send the data, comparatively quickly) The difficulty we're having is that we don't know whether to break the tasks into separate jobs, or process the job in one go. Are there any best practices or useful references on this subject? Is there some obvious benefit to a method that we're missing? So far we can see these benefits for each method: Split Job lease length reflects job length: Rather than total of two Finer granularity on recovery: If we lose outgoing connectivity we can tell them all to retry The starting state of the second task is saved to job history: Helps with debugging (although similar logging could be added in single task method) Single Single job to be scheduled: Less processing overhead Data not stale on recovery: If the outgoing downtime is quite long, the pending Send jobs could be outdated

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• Whole map design vs. tiles array design

  - by Mikalichov

  I am working on a 2D RPG, which will feature the usual dungeon/town maps (pre-generated). I am using tiles, that I will then combine to make the maps. My original plan was to assemble the tiles using Photoshop, or some other graphic program, in order to have one bigger picture that I could then use as a map. However, I have read on several places people talking about how they used arrays to build their map in the engine (so you give an array of x tiles to your engine, and it assemble them as a map). I can understand how it's done, but it seems a lot more complicated to implement, and I can't see obvious avantages. What is the most common method, and what are advantages/disadvantages of each?

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• Are there any adverse side effects to loading html5shiv in every browser?

  - by Jeff

  On the html5shiv Google Code page the example usage includes an IE conditional: <!--[if lt IE 9]> <script src="dist/html5shiv.js"></script> <![endif]--> However on the html5shiv github page, the description explains: This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer, as well as default HTML5 styling in Internet Explorer 6 - 9, Safari 4.x (and iPhone 3.x), and Firefox 3.x. An obvious contradiction. So to satisfy my curiosity, for anyone who has studied the code, are there any adverse side affects to loading html5shiv in every browser (without the IE conditional)? EDIT: My goal, obviously, is to use the shiv without the IE conditional.

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• How does a government development shop transition to developing open source solutions?

  - by Rob Oesch

  Our shop has identified several reasons why releasing our software solutions to the open source community would be a good idea. However, there are several reasons from a business stand point why converting our shop to open source would be questioned. I need help from anyone out there who has gone through this transition, or is in the process. Specifically a government entity. About our shop: - We develop and support web and client applications for the local law enforcement community. - We are NOT a private company, rather a public sector entity Some questions that tend to come about when we have this discussion are: We're a government agency, so isn't our code already public? How do we protect ourselves from being 'hacked' if someone looks into our code? (There are obvious answers to this question like making sure you don't hard code passwords, etc. However, the discussion needs to consider an audience of executives who are very security conscience.)

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• 301 redirects - can we not delete old pages?

  - by KBS

  First time here :) We have a page on the site which ranks well for an SEO term (top 5) but contains old information. We have added a new page but Google doesn't rank it that well. Information on these pages is time sensitive. Old: example.com/2013-related-information.html New: example.com/2014-related-information.html Obvious solution is to delete old page and do a 301 redirect to the new page. Now, can we still keep the old page by giving it a new URL. Step1: example.com/2013-related-information.html is redirect to example.com/2014-related-information.html Step2: example.com/2014-related-information.html is recreated with a new address such as example.com/new-2013-related-information.html What we are trying to do is to send the user to the fresh page but still not wasting the record copy if someone wants to go and dig up old page. Would appreciate help!! Cheers

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• What is the relevance of resumes in the age of GitHub, Stack Exchange, Coursera, Udacity, blogs, etc.?

  - by davidk01

  My resume is no longer relevant. It can no longer contain an adequate description of my technical abilities. One can get a much better sense of what I am capable of by looking at my GitHub repositories, my Stack Exchange profiles, and the various courses that I am taking at Udacity and Coursera. The problem is that I have no idea how to tell employers that those are the places to look if they want an accurate description of what I can do. Every time a recruiter contacts me I gently nudge them towards all the resources I just mentioned and I also provide a link to a publicly visible Google doc that contains my resume along with links to all those resources. Yet, they keep coming back asking for a more descriptive resume. How can I make it even more blatantly obvious that if somebody wants to hire me then they can save themselves a whole bunch of trouble by just clicking on a few links and browsing around?

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• RPG Item processing

  - by f00b4r

  I started working on an item system for my (first) game, and I'm having a problem conceptualizing how it should work. Since Items can produce a bunch of potentially non-standard actions (revive a character vs increasing some stat) or have use restrictions (can only revive if a character is dead). For obvious reasons, I don't want to create a new Item class for every item type. What is the best way to handle this? Should I make a handful of item types (field modifiers, status modifiers, )? Is it normal to script item usage? Could (should?) this be combined with the above mentioned solution (have a couple of different sub item types, make special case items usage scripted)? Thanks.

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• Does HTML5 have a feature that enables a user to add an icon to the Apps screen when "installing", and if not, when are they planning to add it?

  - by Jason Livesay

  I know that the mobile bookmark bubble might sort of work for iOS, but it isn't going in the same section. And for Android, bookmarking is really not going to cut it for a mobile HTML5 application install since users just don't think to go to their bookmarks and that bookmark process takes two or three steps. To me this issue of getting the application (bookmark) installed pretty much makes the rest of the HTML 5 features aimed at mobile HTML much less useful. I can't realistically expect users to prefer the bookmark install and launch process over regular apps, so I can realistically expect them to ignore my mobile HTML5 application and use a native app. The groups behind mobile HTML 5 features do seem to be pushing for HTML 5 apps adoption with things like Application Cache etc. To me it seems obvious that the bookmark bubble is not going to cut it. Someone please tell me they have addressed this or at least are working on it?

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