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• Introduce unit testing when codebase is already available

  - by McMannus

  I've been working on a project in Flex for three years now without unit testing. The simple reason for that is the fact that I just didn't realize the importance of unit testing when being at the beginning of studies at university. Now my attitude towards testing changed completely and therefore I want to introduce it to the existing project (about 25000LOC). In order to do it, there are two approaches to choose from: 1) Discard the existing codebase and start from scratch with TDD 2) Write the tests and try to make them pass by changing the existing code Well, I would appreciate not having to write everything from scratch but I think by doing this, the design would be much better. What would you advise me to do? Thanks for replies in advance! Jan

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• Google web search shows dateCreated instead of dateModified metadata

  - by LonelyPixel

  So today I discovered that the pages from my website are listed with an unexpected date value. I specify the schema.org properties dateCreated and dateModified for most of my content pages. I'd expect that search results show me when a page was last updated, to get a sense of the currency of the page. But it's showing the date of first publishing which may be years ago. That's a bit unsatisfying but I don't want to misuse the metadata because Google probably reads it wrong. Some search terms for you to try it out: "gitrevisiontool"; "easyxml"; "multiselecttreeview" (look for the results on dev.unclassified.de; the human- and machine-readable dates come at the end of the page) Does anybody know more about what's wrong here? Or does it work as designed? (What a stupid design that would be.)

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• How an offline main domain can influence traffic on an active sub domain

  - by danie7L T

  The website(s) design is for a company active in 3 different areas. As an example lets use the following structure: www.example.com [sub1.example.com] [sub2.example.com] [sub3.example.com] sub2.example.com and sub3.example.com are ready to go live but www.example.com really isn't and send a 503 http error code. I would like to know if this situation will affect the traffic and ranking of the subdomains ready to go live? Is it preferable to wait and go live with the main domain? Or there is nothing to "fear" and one doesn't affect the other? Thank you

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• Free serif font with clearly distinguishable 0 (zero) character

  - by l0b0

  I'm using gLabels to create some small pieces of paper to give away to people - Just two lines of about 15-20 characters each. One of the important parts of the design is that there are no "o" ("oh") characters, but there are "0" ("zero") characters in an all-lowercase URL. Therefore I need a non-monospaced (and very legible in print) font where "0" cannot be confused with "o" even without reference. The closest thing I've found so far is Andale Mono and Inconsolata , but they are both monospace, and as such not very easy to read in print. Alternatively, to find a font myself, is there some way to preview all fonts in the Ubuntu repositories without installing them?

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• Is the use of hashbang really a good idea? [on hold]

  - by user32642

  I've been working on a WordPress site lately that was design with hashbang or shebang in the dynamically generated URLs. After doing some research, I noticed that there was some preference by Google in their use and how it crawled the site. However, after I ran several sitemap generators and Screaming Frog SEO Spider, I realized that the only page being crawled was the index page. So now I am questioning the use of hashbangs. What do you think? Should I attempt to remove them? Or will it even matter? And does anyone know of a easy way to remove this? The site is www.modernvintage1005.com

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• If you need more than 3 levels of indentation, you're screwed?

  - by jokoon

  Per the Linux kernel coding style document: The answer to that is that if you need more than 3 levels of indentation, you're screwed anyway, and should fix your program. What can I deduct from this quote? On top of the fact that too long methods are hard to maintain, are they hard or impossible to optimize for the compiler? I don't really understand if this quote encourages better coding practice or is really a mathematical / algorithmic sort of truth. I also read in some C++ optimizing guide that dividing up a program into more function improves its design is a common thing taught at school, but it should be not done too much, since it can turn into a lot of JMP calls (even if the compiler can inline some methods by itself).

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• Factory for arrays of objects in python

  - by Vorac

  Ok, the title might be a little misleading. I have a Window class that draws widgets inside itself in the constructor. The widgets are all of the same type. So I pass a list of dictionaries, which contain the parameters for each widget. This works quite nicely, but I am worried that the interface to callers is obfuscated. That is, in order to use Window, one has to study the class, construct a correct list of dictionaries, and then call the constructor with only one parameter - widgets_params. Is this good or bad design? What alternatives does the python syntax provide?

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• JS framework with conditionally loaded fragments

  - by kjs3

  I'm doing a single-page, responsive, mobile first design. I found this article about conditionally loaded fragments but am wondering what the different js frameworks have build-in to handle this? I'm imagining the mobile version with a list view fragment that transitions to a show view fragment. A larger portal could just show both fragments and change the show fragment when items in the list are clicked. I'd love thoughts on what is available from the various frameworks, not an argument. Ember?, Angular?, etc. Maybe I'm missing it, but I'm not seeing the responsive fragments issue brought up in the various demos I've found so far.

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• Building an instance system.

  - by Kyle C

  I am looking into how to design an instance system for the game I am working on. I have always wondered how these are created in games like World of Warcraft, where instances == dungeons/raids/etc). Areas that are separated from players other than those in your group, but have specific logic to them. Specifically how can you reuse your existing code base and not have a bunch of checks everywhere ? if (isInstance) do x; else do y; I don't know if this will make too much of a difference on any answers, but we're using a pretty classic "Object as pure aggregation" component system for our entities.

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• How can I improve the workflow between developer and designer with Expression Blend?

  - by Amenti

  We use WPF and Expression Blend 4. I'm trying to improve our workflow by tutoring one of our designers to use it for styling and animation. Slowly but surely I get the impression Blend in itself is to technical for the designer in question. I myself use it only occasionally (it's great for Visual States for instance) because a lot of things are easier done in code or not possible at all in Blend alone. It seems a developer with design experience is a lot more productive with it than a sole designer. Are there any good resources or advice as to how I can improve this workflow?

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• Observer Pattern Implementation

  - by user17028

  To teach myself basic game programming, I am going to program a clone of Pong. I will use the Observer design pattern, with an interface between the input and the game engine. However, I'm not sure what the interface should do. One idea I had was for the input interface to tell the game engine that (e.g.) the screen was clicked, then to let the game engine decide what to do with that information (shoot a bullet, for example). Another idea I had was for the input interface, having caught the mouse click, to tell the game engine to shoot a bullet. Which method would be better for me to use?

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• How to use database to generate multiple folder content page? [migrated]

  - by VenomVipes

  Scenario :I am trying to build a Mobile Entertainment Portal. It will enable users to download Music & Movies to their Cell Phones... Problem Exp : Suppose I upload 100 folders of Songs, each folder is for one Album. I want a way to generate a page with all the folders name (Album Name) in it. If user click on the page, they should be taken to a page where they get list of all songs in the album. Clicking on any song name will let them download it. Can it be done anyway or will I have to manually design each of the 3 pages for each album. If I do that, its time consuming and also will be difficult to change anything like footer, header...

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• Most standard / Best way to keep the same top menu among different web pages?

  - by jsoldi

  What's the standard way to keep the same menu on top among different web pages without having to duplicate it on each page (I don't mean that it doesn't reload like when using frames and only loading the bottom part; I want the menu to scroll with the page when scrolling down, like this, this, this and pretty much every single web page that exists). I found this answer but the guy can't use Php and I can. Plus, I see several people giving different suggestions, but I assume there is a standard since pretty much every single web page in the whole web have a menu on top that stays the same among multiple pages . I'm just a newbie on web design (I can program Php and Html easily but I have no idea about standards and stuff like that since I'm self-taught guy ;)). What I would normally do is to include the menu with php but I'm not sure if this is the "standard".

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• How does sprite customization in 2D games work?

  - by Alouette

  I´m working on the design of a new game concept at the moment and I would like to know how to handle a customization of sprites. (In 2D that is, hence the topic.) This is my scenario: The player will have a tower containing 3 floors (or more). Each floor can be replaced by another "piece", i.e. a blue floor, a fire floor, a stone floor. With the little knowledge of game development I have, creating a sprite for each possible combination is probably not a good idea, since the size of the game file will be HUGE. So, how does developers solve this? Do you put a standard position and just replace the sprite itself? Any advice or information about this would be great. Regards.

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• How to improve workflow between developer and designer with Expression Blend?

  - by Amenti

  We use WPF and Expression Blend 4. I'm trying to improve our workflow by tutoring one of our designers to use it for styling and animation. Slowly but surely I get the impression Blend in itself is to technical for the designer in question. I myself use it only occasionally (it's great for Visual States for instance) because a lot of things are easier done in code or not possible at all in Blend alone. It seems a developer with design experience is a lot more productive with it than a sole designer. Are there any good online resources or advice you could give me how to improve this situation?

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• Improve Bad testing

  - by SetiSeeker

  We have a large team of developers and testers. The ratio is one tester for every one developer. We have full bug tracking and reporting systems in place. We have test plans in place. Every change to the product, the testing team is involved in the design of the feature and are included in the development process as much as possible. We build in small iterative blocks, using scrum methodology and every scrum they are included in, including the grooming sessions etc. But every release of the product, they miss even the most simple and obvious defects. How can we improve this?

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• Could it be more efficient for systems in general to do away with Stacks and just use Heap for memory management?

  - by Dark Templar

  It seems to me that everything that can be done with a stack can be done with the heap, but not everything that can be done with the heap can be done with the stack. Is that correct? Then for simplicity's sake, and even if we do lose a little amount of performance with certain workloads, couldn't it be better to just go with one standard (ie, the heap)? Think of the trade-off between modularity and performance. I know that isn't the best way to describe this scenario, but in general it seems that simplicity of understanding and design could be a better option even if there is a potential for better performance.

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• Google apporte une refonte à l'interface de son réseau social Google+, les développeurs mécontents

  Google apporte une refonte à l'interface de Google+ les développeurs mécontents Google est aux trousses de Facebook, et ne souhaite pas se laisser distancer par le réseau social. Après la mise à jour de Facebook avec l'introduction de Timeline, c'est au tour du réseau social Google+ de subir un lifting complet de son interface. Le géant de la recherche a annoncé dans un billet de blog une refonte du design du site qui se rapproche un peu plus de Facebook. L'interface conçue autour de la simplification et de la personnalisation, dispose désormais d'un ruban à gauche de l'écran donnant accès aux fonctionnalités les plus usuelles comme les photos et les profil...

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• How do I implement powerups for my Breakout clone?

  - by Eva

  I'm making a simple Breakout clone in Python that will have very many powerups/powerdowns (so far I came up with 26). Some will affect the paddle (paddle missile, two paddles, short paddle, etc.), some will affect the ball (slow ball, destructo-ball, invisible ball, etc.), some will affect the bricks (brick scramble, move up, bricks indestructible, etc.), and some will affect other game aspects (extra life, more points, less points, etc.). I'm pretty sure I have the code to draw the falling powerups and test for collisions with the paddle down, but I'm confused about how to code the effects of the powerups. Since there are very many powerups, it seemed inefficient to add specific methods to each component as done in this tutorial. However, I can't think of an other ways to implement the powerups. I found a page that hints at some way to design powerup behavior using classes, but I'm at a loss for how to do that. (A short example would help.) Please give me a short code example of another way to implement the effects of the powerups.

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• SNEAK PEEK: Another Silverlight theme pack preview

  Building on the positive feedback of the previous Silverlight application themes released last month (Cosmopolitan, Accent Color, and Windows) the design team is working on another theme targeting business application developers. We dont yet have an official name for this one yet (and to mitigate the confusion of internal code names again, Ill spare you the code name), but I wanted to put up a preview. Were turning this theme around FAST and I wanted to throw it out here in an initial iteration for...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• "more than 3 levels of indentation, you're screwed" How should I understand this quote ?

  - by jokoon

  The answer to that is that if you need more than 3 levels of indentation, you're screwed anyway, and should fix your program. What can I deduct from this quote ? On top of the fact that too long methods are hard to maintain, are they hard or impossible to optimize for the compiler ? I don't really understand if this quote encourages better coding practice or is really a mathematical/algorithmic sort of truth... I also read in some C++ optimizing guide that dividing up a program into more function improves its design is a common thing taught at school, but it should be not done too much, since it can turn into a lot of JMP calls (even if the compiler can inline some methods by itself).

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• Fresh start outside Google's crapbox [on hold]

  - by Krzysztof Minister Bytu

  I might have been experimenting with my website too much and Google first cut the flow of visitors considerably and now I didn't get one for 4 days already. It's a joke that they've done this, because I've put a lot of work into it, but that's a topic for another day. My question is about further avoiding it. I want to take the partly improved design from that website onto a new one and get a new domain name. The question is: in that case, do I have to change the hosting option (it has my old website name in the address), or is changing the domain enough for Google to treat it as something new from a "fresh user". In other words, does Google get through the domain address and log into the actual hosting address? I'd hate to waste another few months of hard work, so I prefer to take every possible precaution but not paying for another hosting would make things easier on the wallet.

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• Unit testing a text index

  - by jplot

  Consider a text index such as a suffix tree or a suffix array supporting Count queries (number of occurrences of a pattern) and Locate queries (the positions of all the occurrences of a pattern) over a given text. How would you go about unit testing such a class ? What I have in mind is to generate a big random string then extract a random substring from this big string and compare the results of both queries with naive implementations (such as string::find). Another idea I have is to find the most frequent substring of length l appearing in the original string (using perhaps a naive method) and use these substrings for testing the index. This isn't the best way, so what would be a good design of the unit tests for a text index ? In case it matters, this is in C++ using google test.

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• Announcement: Video Demos Now Available

  - by Richard Bingham

  The YouTube Channel will complement our blog posts, showing you many customization and development tasks using the Fusion Applications platform. This includes: Using Page Composer and Application Composer for run-time customization Using JDeveloper for ADF design-time customization Using BI Composer tools for reports and analytics customization Using SOA development tools for BPEL and BPM customization These videos are bite-sized, only a few minutes each, and show a process from start to finish with no slides or static screenshots. We have an initial library of 14 videos covering many popular areas and a plan to release many more, roughly on a weekly basis. We hope you find these useful, and if you have comments or have things you would like to see then please leave a comment below and we'll do our best. Enjoy the show!

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• Server costs and back loading for mobile devices

  - by user23844

  A company approached me to design an MMO for the mobile platform and I have the perfect idea for them. My question is how much would a server for a FTP game that has both a PVE element and PVP cost? Also do you think that it would be better or is it even possible to back load the data onto the phones (trying to come up with some interesting way to back up the data in case of emergency). I don't want the game to be totally online reliant (I want to appeal to not only phone users but also iPod touch users) and for there to be an offline mode. If you can't tell this is my first game besides simple projects I've done on the side. Any help would be greatly appreciated.

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