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  • Computer Science Degrees and Real-World Experience

    - by Steven Elliott Jr
    Recently, at a family reunion-type event I was asked by a high school student how important it is to get a computer science degree in order to get a job as a programmer in lieu of actual programming experience. The kid has been working with Python and the Blender project as he's into making games and the like; it sounds like he has some decent programming chops. Now, as someone that has gone through a computer science degree my initial response to this question is to say, "You absolutely MUST get a computer science degree in order to get a job as a programmer!" However, as I thought about this I was unsure as to whether my initial reaction was due in part to my own suffering as a CS student or because I feel that this is actually the case. Now, for me, I can say that I rarely use anything that I learned in college, in terms of the extremely hard math, algorithms, etc, etc. but I did come away with a decent attitude and the willingness to work through tough problems. I just don't know what to tell this kid; I feel like I should tell him to do the CS degree but I have hired so many programmers that majored in things like English, Philosophy, and other liberal arts-type degrees, even some that never went to college. In fact my best developer, falls into this latter category. He got started writing software for his church or something and then it took off into a passion. So, while I know this is one of those juicy potential down vote questions, I am just curious as to what everyone else thinks about this topic. Would you tell a high school kid about this? Perhaps if he/she already knows a good deal of programming and loves it he doesn't need a CS degree and could expand his horizons with a liberal arts degree. I know one of the creators of the Django web framework was a American Literature major and he is obviously a pretty gifted developer. Anyway, thanks for the consideration.

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  • How do I load tmx files with Slick2d?

    - by mbreen
    I just started using Slick2D and learned how simple it is to load in a tilemap and display it. I tried atleast a dozen different tmx files from numerous examples to see if it was the actual file that was corrupted. Everytime I get this error: Exception in thread "main" java.lang.RuntimeException: Resource not found: data/maps/desert.tmx at org.newdawn.slick.util.ResourceLoader.getResourceAsStream(ResourceLoader.java:69) at org.newdawn.slick.tiled.TiledMap.<init>(TiledMap.java:101) at game.Game.init(Game.java:17) at game.Tunneler.initStatesList(Tunneler.java:37) at org.newdawn.slick.state.StateBasedGame.init(StateBasedGame.java:164) at org.newdawn.slick.AppGameContainer.setup(AppGameContainer.java:390) at org.newdawn.slick.AppGameContainer.start(AppGameContainer.java:314) at game.Tunneler.main(Tunneler.java:29) Here is my Game class: package game; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.SlickException; import org.newdawn.slick.state.BasicGameState; import org.newdawn.slick.state.StateBasedGame; import org.newdawn.slick.tiled.TiledMap; public class Game extends BasicGameState{ private int stateID = -1; private TiledMap map = null; public Game(int stateID){ this.stateID = stateID; } public void init(GameContainer container, StateBasedGame game) throws SlickException{ map = new TiledMap("data/maps/desert.tmx","maps");//ERROR } public void render(GameContainer container, StateBasedGame game, Graphics g) throws SlickException{ //map.render(0,0); } public void update(GameContainer container, StateBasedGame game, int delta) throws SlickException{ } public int getID(){return stateID;} } I've tried to see if anyone else has had similar problems but haven't turned up anything. I am able to load other files, so I don't believe it's a compiler issue. My menu class can load images and display them just fine. Also, the filepath is correct. Please let me know if you have any pointers that might help me sort this out.

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  • Designing javascript chart library

    - by coolscitist
    I started coding a chart library on top of d3js: My chart library. I read Javascript API reusability and Towards reusable charts. However, I am NOT really following the suggestions because I am not really convinced about them. This is how my library can be used to create a bubble chart: var chart = new XYBubbleChart(); chart.data = [{"xValue":200,"yValue":300},{"xValue":400,"yValue":200},{"xValue":100,"yValue":310}]; //set data chart.dataKey.x = "xValue"; chart.dataKey.y = "yValue"; chart.elementId = "#chart"; chart.createChart(); Here are my questions: It does not use chaining. Is it a big issue? Every property and function is exposed publicly. (Example: width, height are exposed in Chart.js). OOP is all about abstraction and hiding, but I don't really see the point right now. I think exposing everything gives flexibility to change property and functionality inside subclasses and objects without writing a lot of code. What could be pitfalls of such exposure? I have implemented functions like: zooming, "showing info boxes when data point is clicked" as "abilities". (example: XYZoomingAbility.js). Basically, such "abilities" accept "chart" object, play around with public variables of "chart" to add functionality. What this allows me to do is to add an ability by writing: activateZoomAbility(chartObject); My goal is to separate "visualization" from "interactivity". I want "interactivity" like: zooming to be plugged into the chart rather than built inside the chart. Like, I don't want my bubble chart to know anything about "zooming". However, I do want zoomable bubble chart. What is the best way to do this? How to test and what to test? I have written mixed tests: jasmine and actual html files so that I can test manually on browser.

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  • Teaching myself, as a physicist, to become a better programmer

    - by user787267
    I've always liked physics, and I've always liked coding, so when I got the offer for a PhD position doing numerical physics (details are not relevant, it's mostly parallel programming for a cluster) at a university, it was a no-brainer for me. However, as most physicists, I'm self taught. I don't have broad background knowledge about how to code in an object oriented way, or the name of that specific algorithm that optimizes the search in some kD tree. Since all my work so far has been more concerned about the physics and the scientific results, I undoubtedly have some bad habits - more so because my coding is my own, and not really teamwork. I have mostly used C since it is very straightforward and "what you write is what you get" - no need for fancy abstractions. However, I have recently switched to C++ since I'd like to learn more about the power that comes with abstraction, and it's pretty C-like (syntax-wise at least). How do I teach myself to code in a good, abstract way like a graduate in computer science? I know my code is efficient, but I want it to be elegant as well, and readable. Keep in mind that I don't have time to read several 1000-page tomes about abstract programming. I need to spend time on actual, physics related research (my supervisor would laugh at me if he knew I spent time thinking about how to program elegantly). How do I assess if my work is also good from a programmer's perspective?

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  • Should we have a database independent SQL like query language in Django?

    - by Yugal Jindle
    Note : I know we have Django ORM already that keeps things database independent and converts to the database specific SQL queries. Once things starts getting complicated it is preferred to write raw SQL queries for better efficiency. When you write raw sql queries your code gets trapped with the database you are using. I also understand its important to use the full power of your database that can-not be achieved with the django orm alone. My Question : Until I use any database specific feature, why should one be trapped with the database. For instance : We have a query with multiple joins and we decided to write a raw sql query. Now, that makes my website postgres specific. Even when I have not used any postgres specific feature. I feel there should be some fake sql language which can translate to any database's sql query. Even Django's ORM can be built over it. So, that if you go out of ORM but not database specific - you can still remain database independent. I asked the same question to Jacob Kaplan Moss (In person) : He advised me to stay with the database that I like and endure its whole power, to which I agree. But my point was not that we should be database independent. My point is we should be database independent until we use a database specific feature. Please explain, why should be there a fake sql layer over the actual sql ?

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  • How best to handle ID3D11InputLayout in rendering code?

    - by JohnB
    I'm looking for an elegant way to handle input layouts in my directx11 code. The problem I have that I have an Effect class and a Element class. The effect class encapsulates shaders and similar settings, and the Element class contains something that can be drawn (3d model, lanscape etc) My drawing code sets the device shaders etc using the effect specified and then calls the draw function of the Element to draw the actual geometry contained in it. The problem is this - I need to create an D3D11InputLayout somewhere. This really belongs in the Element class as it's no business of the rest of the system how that element chooses to represent it's vertex layout. But in order to create the object the API requires the vertex shader bytecode for the vertex shader that will be used to draw the object. In directx9 it was easy, there was no dependency so my element could contain it's own input layout structures and set them without the effect being involved. But the Element shouldn't really have to know anything about the effect that it's being drawn with, that's just render settings, and the Element is there to provide geometry. So I don't really know where to store and how to select the InputLayout for each draw call. I mean, I've made something work but it seems very ugly. This makes me thing I've either missed something obvious, or else my design of having all the render settings in an Effect, the Geometry in an Element, and a 3rd party that draws it all is just flawed. Just wondering how anyone else handles their input layouts in directx11 in a elegant way?

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  • Distinction between API and frontend-backend

    - by Jason
    I'm trying to write a "standard" business web site. By "standard", I mean this site runs the usual HTML5, CSS and Javascript for the front-end, a back-end (to process stuff), and runs MySQL for the database. It's a basic CRUD site: the front-end just makes pretty whatever the database has in store; the backend writes to the database whatever the user enters and does some processing. Just like most sites out there. In creating my Github repositories to begin coding, I've realized I don't understand the distinction between the front-end back-end, and the API. Another way of phrasing my question is: where does the API come into this picture? I'm going to list some more details and then questions I have - hopefully this gives you guys a better idea of what my actual question is, because I'm so confused that I don't know the specific question to ask. Some more details: I'd like to try the Model-View-Controller pattern. I don't know if this changes the question/answer. The API will be RESTful I'd like my back-end to use my own API instead of allowing the back-end to cheat and call special queries. I think this style is more consistent. My questions: Does the front-end call the back-end which calls the API? Or does the front-end just call the API instead of calling the back-end? Does the back-end just execute an API and the API returns control to the back-end (where the back-end acts as the ultimate controller, delegating tasks)? Long and detailed answers explaining the role of the API alongside the front-end back-end are encouraged. If the answer depends on the model of programming (models other than the Model-View-Controller pattern), please describe these other ways of thinking of the API. Thanks. I'm very confused.

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  • Duck checker in Python: does one exist?

    - by elliot42
    Python uses duck-typing, rather than static type checking. But many of the same concerns ultimately apply: does an object have the desired methods and attributes? Do those attributes have valid, in-range values? Whether you're writing constraints in code, or writing test cases, or validating user input, or just debugging, inevitably somewhere you'll need to verify that an object is still in a proper state--that it still "looks like a duck" and "quacks like a duck." In statically typed languages you can simply declare "int x", and anytime you create or mutate x, it will always be a valid int. It seems feasible to decorate a Python object to ensure that it is valid under certain constraints, and that every time that object is mutated it is still valid under those constraints. Ideally there would be a simple declarative syntax to express "hasattr length and length is non-negative" (not in those words. Not unlike Rails validators, but less human-language and more programming-language). You could think of this as ad-hoc interface/type system, or you could think of it as an ever-present object-level unit test. Does such a library exist to declare and validate constraint/duck-checking on Python-objects? Is this an unreasonable tool to want? :) (Thanks!) Contrived example: rectangle = {'length': 5, 'width': 10} # We live in a fictional universe where multiplication is super expensive. # Therefore any time we multiply, we need to cache the results. def area(rect): if 'area' in rect: return rect['area'] rect['area'] = rect['length'] * rect['width'] return rect['area'] print area(rectangle) rectangle['length'] = 15 print area(rectangle) # compare expected vs. actual output! # imagine the same thing with object attributes rather than dictionary keys.

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  • Rotating a view of a chunked 2d tilemap

    - by Danie Clawson
    I'm working on a top-down (oblique) tile-based engine. I would like for the tiles to have a definable height in the world, with Characters being occluded by them, etc. This has led to a desire to be able to "rotate" the view of the world, even though I'm using all hand-drawn graphics and blitting. Therefor, I need to rotate the actual world itself, or change how the Camera traverses these arrays. How can, or should, I create individual rotations of 90 degrees, when I have multi-dimensional arrays? Is it faster to actually rotate the array, to access it differently, or to create pre-computed accessor(?) arrays, something like how my chunks work? How can I rotate an individual chunk, or set of chunks? Currently I establish my tile grid like this (tile height not included): function Surface(WIDTH, HEIGHT) { WIDTH = Math.max(WIDTH-(WIDTH%TPC), TPC); HEIGHT = Math.max(HEIGHT-(HEIGHT%TPC), TPC); this.tiles = []; this.chunks = []; //Establish tiles for(var x = 0; x < WIDTH; x++) { var col = [], ch_x = Math.floor(x/TPC); if(!this.chunks[ch_x]) this.chunks.push([]); for(var y = 0; y < HEIGHT; y++) { var tile = new Tile(x, y), ch_y = Math.floor(y/TPC); if(!this.chunks[ch_x][ch_y]) this.chunks[ch_x].push([]); this.chunks[ch_x][ch_y].push(tile); col.push(tile); } this.tiles.push(col); } }; Even some basic advice on my data struct would be much appreciated.

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  • Implementing MVC pattern in SWT application

    - by Pradeep Simha
    I am developing an SWT application (it's basically an Eclipse plugin, so I need to use SWT). Currently my design is as follows: Model: In model, I have POJOs which represents the actual fields in views. View: It is a dumb layer, it contains just UI and contains no logic (not even event handlers) Controller: It acts as a mediator b/w those two layers. Also it is responsible for creating view layer, handling events etc. Basically I have created all of the controls in view as a static like this public static Button btnLogin and in controller I have a code like this: public void createLoginView(Composite comp) { LoginFormView.createView(comp); //This createView method is in view layer ie LoginFormView LoginFormView.btnLogin.addSelectionListener(new SelectionListener() { //Code goes here }); } Similalrly I have done for other views and controls. So that in main class and other classes I am calling just createLoginView of controller. I am doing similar thing for other views. So my question, is what I am doing is correct? Is this design good? Or I should have followed any other approach. Since I am new to SWT and Eclipse plugin development (basically I am Java EE developer having 4+ years of exp). Any tips/pointers would be appreciated.

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  • How should a developer reject impossible requirements?

    - by sugar
    Here's the problem I'm facing: Quote From Project Manager: Hey Sugar, I'm assigning you the task of developing a framework that could be used for many different iOS applications. Here are the requirements: It should be able to detect the thickness of the thumb or fingers being used to manipulate the UI. With this information, all elements of the UI should be arranged & sized automatically. For a larger thumb, elements should be arranged nearer the center of the screen. For a smaller thumb, elements should be arranged nearer the corners of the screen. For a larger thumb, all fonts should be smaller. (We're assuming an adult in this case.) For a smaller thumb, all fonts should be larger. (We're assuming a younger person in this case.) Summary: This framework is required for creating user-friendly user interfaces programmatically. The framework should be developed in such a way that we can use for as many projects as needed, so it must also be very developer-friendly. I am the developer given this task, so my questions are as follows: How can I explain that these requirements are a little ridiculous? How can I explain that it would be better to concentrate on developing actual projects? How can I explain that even if this were possible, I wouldn't recommended developing such a thing? How do I say NO to this project politely, gently, and respectfully? How can I explain that even for a developer with 3 years of experience, this might not be possible?

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  • Does a team of developers need a manager?

    - by Amadiere
    Background: I'm currently part of a team of four: 1 manager, 1 senior developer and 2 developers. We do a range of bespoke in-house systems / projects (e.g. 6-8 weeks) for an organisation of around 3500 staff, as well as all the maintenance and support required from the systems that have been created before. There is not enough of us to do all the work that is potentially coming our way - we're understaffed. Management acknowledge this, but budget restraints limit our ability to recruit additional members to the team (even if we make the salary back in savings). The Change This leaves us where we are now. Our manager is due to leave his role for pastures new, leaving a vacancy in the team. Management are using this opportunity to restructure our team which would see the team manager role replaced by another developer and another senior developer. Their logic being that we need more developers, so here's a way of funding it (one of the roles is partially funded from another vacant post). The team would have no direct line manager and the roles and responsibilities would be divided up between the seniors and the (relatively new to post) service manager (a non-technical role with little-to-no development knowledge/experience whose focus is shared amongst a number of other teams and individuals) - who would be our next actual manager up the food chain. I guess the final question is: Is it possible to run a development team without an manager? Have you had experience of this? And what things could go wrong / could be of benefit to us? I'd ideally like to "see the light" and the benefits of doing things this way, or come up with some points for argument against it.

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  • Getting into driver development for linux [closed]

    - by user1103966
    Right now, I've been learning about writing device-drivers for linux 3.2 kernel for about 2 months. So far I have been able program simple char drivers that only read and write to a fictitious dev structure like a file, but now I'm moving to more advance concepts. The new material I've learned about includes I/O port manipulation, memory management, and interrupts. I feel that I have a basic understanding of overall driver operation but, there is still so much that I don't know. My question is this, given that I have the basic theory of how to write a dev-driver for a piece of hardware ... how long would it take to actually develop the skills of writing actual software that companies would want to employ? I plan on getting involved in an open-source project and building a portfolio. Also what type of beginner drivers could I write for hardware that would best help me develop my skills? I was thinking that taking on a project where I design my own key logger would easy and a good assignment to help me understand how IO ports and interrupts are used. I may want to eventually specialize in writing software for video cards or network devices though these devices seem beyond my understanding at the moment. Thanks for any help

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  • BizTalk Pipeline Component Error: "Object reference not set to an instance of an object"

    - by Stuart Brierley
    Yesterday I posted about my BizTalk Archiving Pipeline Component, which can be found on Codeplex if anyone is interested in taking a look. During testing of this component I began to encounter an error whereby the component would throw an "Object reference not set to an instance of an object" error when processing as a part of a Custom Pipeline. This was occurring when the component was reading a ReadOnlySeekableStream so that the data can be archived to file, but the actual code throwing the error was somewhere in the depths of the Microsoft.BizTalk.Streaming stack. It turns out that there is a known issue where this exception can be thrown because the garbage collector has disposed of of the stream before execution of the custom pipeline has completed. To get around this you need to add the streams in your code to the pipeline context resource tracker.   So a block of my code goes from:                         originalStrm = bodyPart.GetOriginalDataStream();                         if (!originalStrm.CanSeek)                         {                             ReadOnlySeekableStream seekableStream = new ReadOnlySeekableStream(originalStrm);                             inmsg.BodyPart.Data = seekableStream;                             originalStrm = inmsg.BodyPart.Data;                         }                         fileArchive = new FileStream(FullPath, FileMode.Create, FileAccess.Write);                         binWriter = new BinaryWriter(fileArchive);                         byte[] buffer = new byte[bufferSize];                         int sizeRead = 0;                         while ((sizeRead = originalStrm.Read(buffer, 0, bufferSize)) != 0)                         {                             binWriter.Write(buffer, 0, sizeRead);                         } to                         originalStrm = bodyPart.GetOriginalDataStream();                         if (!originalStrm.CanSeek)                         {                             ReadOnlySeekableStream seekableStream = new ReadOnlySeekableStream(originalStrm);                             inmsg.BodyPart.Data = seekableStream;                             originalStrm = inmsg.BodyPart.Data;                         }                         pc.ResourceTracker.AddResource(originalStrm);                         fileArchive = new FileStream(FullPath, FileMode.Create, FileAccess.Write);                         binWriter = new BinaryWriter(fileArchive);                         byte[] buffer = new byte[bufferSize];                         int sizeRead = 0;                         while ((sizeRead = originalStrm.Read(buffer, 0, bufferSize)) != 0)                         {                             binWriter.Write(buffer, 0, sizeRead);                         } So far this seems to have solved the issue, the error is no more, and my archive component is continuing its way through testing.

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  • Practical considerations for HTML / CSS naming conventions (syntax)

    - by Jeroen
    Question: what are the practical considerations for the syntax in class and id values? Note that I'm not asking about the semantics, i.e. the actual words that are being used, as for example described in this blogpost. There are a lot of resources on that side of naming conventions already, in fact obscuring my search for practical information on the various syntactical bits: casing, use of interpunction (specifically the - dash), specific characters to use or avoid, etc. To sum up the reasons I'm asking this question: The naming restrictions on id and class don't naturally lead to any conventions The abundance of resources on the semantic side of naming conventions obscure searches on the syntactic considerations I couldn't find any authorative source on this There wasn't any question on SE Programmers yet on this topic :) Some of the conventions I've considered using: UpperCamelCase, mainly as a cross-over habit from server side coding lowerCamelCase, for consistency with JavaScript naming conventions css-style-classes, which is consistent with naming of css properties (but can be annoying when Ctrl+Shift+ArrowKey selection of text) with_under_scores, which I personally haven't seen used much alllowercase, simple to remember but can be hard to read for longer names UPPERCASEFTW, as a great way to annoy your fellow programmers (perhaps combined with option 4 for readability) And probably I've left out some important options or combinations as well. So: what considerations are there for naming conventions, and to which convention do they lead?

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  • Acer aspire one d270 can not set brightness

    - by Marko
    I hope you can help me figure out how to set the brightness at my netbook. Following problem appears since I installed ubuntu 11.10 on my acer: I am not able to adjust the brightness by FN Keys nor manually at "systemsettings-display". After searching with google for a while, I found a way via the terminal to adjust it with the folloqing command: "sudo setpci -s 00:02.0 f4.b=7f" ( from 00-9f). That was a major breakthrough for me as I am still new to Linux OS. But still seeking a way to get the FN keys for brightness to work, I kept searching until I found "askubuntu.com". I read through various Questions by other acer users and tried there solutions, but unfortunately none worked out for me. From this thread: fn + arrow keys don't adjust actual brightness on an Acer Aspire 5740 "sudo gedit /etc/X11/xorg.conf". This command did not work because the file was not found. I also used nano instead of gedit, but the file was empty( I think it just created the file since it did not exist). These commands which i found gave me a boot loop and I had to repair ubuntu: sudo gedit /etc/default/grub Change the line GRUB_CMDLINE_LINUX="" into GRUB_CMDLINE_LINUX="acpi_osi=Linux" sudo update-grub From this post Screen Brightness not adjustable for Acer Aspire S3: I tried the solution from the last post, but it did not work either. Does anyone know what I could try? I would appreciate it, if someone could help me out with this. Thanks in advance Netbook specs: CPU: Intel Atom N2600 Memory: 2gb DDR3 Storage: 320 GB HD GPU: Intel GMA 3600

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  • How common is it to submit papers to journals or conferences outside of academia?

    - by Furry
    I worked in academia a few years, but more on the D-side of R&D. The race for papers never appealed to me and I'm a practical not theoretical type, but I do like reading papers on certain topics (e.g. Google Papers, NLP, FB papers, ...) a lot. How common is it that normally working developers submit papers to conferences or even journals? It seems to be somewhat common in certain companies (it's not common or encouraged in mine). Do journals or conferences even take papers by an academic nobody (BSc) under consideration? I ask, because I have a few rough ideas and I would just like to bring them into form, one way or the other. Bonus question: Is there a list of CS (in the widest sense) conferences/journals with short descriptions? PS (Four out of five researchers I met published quite some fluffy stuff for my taste. I am no expert, but those people told me sometimes themselves, that the implementation does not matter, just the idea and the presentation. I always wondered about that. I probably could write about ideas all day long (not instantly but with a bit of preparation), but the implementation and the practical part is the really hard part, that academia just does not like to be concerned with. Also many papers actually scream: I was written so the publication list of my author gets longer - which is a waste of time for everyone, and often a waste of tax money, too. When I think of CS-ish papers, I think of running implementations or actual data, like e.g. Google's Map Reduce, Serving Large-scale Batch Computed Data with Project Voldemort or the like.)

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  • Where should SQL/DB Queries be encapsulated in a software system?

    - by Stephen Bennet
    I frequently write small applications (either web based or otherwise) that require heavy database usage. i've attempted various ways of handling where to put the actual sql queries (sort of ad-hoc ORM systems). These include: Models that build themselves up - and only allowing SQL to be inside of a model. A sort of factory style method where the models are built by a factory class that is allowed to know about SQL. A third entity that maps models based on their fields/keys into the database and generates SQL code on the fly based on this. Is there a common knowledge of which method is best? Or another way I have missed? Clearly a lot of it will be based on the context of the system itself, which for me is usually to produce lightweight tools or utility frameworks. In experimenting, I've never found any of them that feel intuitively "right" and not clunky, but I also do not want to go for a full framework such as Django or Ruby - both because the tools I create are in a variety of languages and because they usually do not warrant that level of surrounding footprint.

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  • Affect movieclip scale from a .as doc to another

    - by Madcowe
    I've been working on a game following a tutorial on the internet, the game is an avoider where you have the Avatar, that has to avoid the objects that fall. The way it is made is: I have a DocumentClass which addChild's the screen you should be seeing and removeChild's the screen that you were. For example: first it loads the menuScreen, then when you press play unloads menu and loads playscreen. When you die it loads the gameoverScreen and loads the playscreen. And from the gameOverScreen you can press the SHOP button to go to the shop. From here on I'm on my own and not following any tutorials. The shop has a button that is supposed to alter the Avatar's X and Y scale to 0.5, but the problem is: how do I make that work? I tried creating a sharedObject.data.avatarSize, on the store's size button the code would be something like: sharedObject.data.avatarSize *= 0.5; And on the AvoiderGame.as, which is the most of the actual game, on the part where the avatar is created I tried putting this after it's creation: scaleX.avatar = sharedObject.data.avatarSize; scaleY.avatar = sharedObject.data.avatarSize; This did not work since it gives me the error 1009 saying can't access something that is null. I tried this before "using" the sharedObject: if( sharedObject.data.avatarSize == null ) { sharedObject.data.avatarSize = 1; } But it did not work... So now I'm not sure on what to do. I know we should reduce global variables as much as we can but how do I do it? Also, if it helps, I'm using Flash CS5 and working with AS3.0

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  • How to protect Google Ads from yontoo layers runtime?

    - by Dharmavir
    Since sometime I have observed that Google Ads on any website including my blog (http://blogs.digitss.com) gets replaced with something similar to uploaded image below. I am sure it's happening with many people and that could reduce google adsense income. After some research I found that it is because "yontoo layers runtime" from http://www.yontoo.com/ (tagline says: Platform that allows you to control the websites you visit everyday.) but actually they are taking over. I am not sure with which software they are making a way into users computer but that seems very bad in terms of freedom of Internet and advt/marketing industry. I don't remember I have ever said "yes" to install yontoo on my computer. This piece of software is successful to install itself on my laptop/desktop and workstation at office. I am going to disable it now but the question is how do I make my websites aware of Yontoo Runtime and stop them from replacing Google Ads? Basically they are not able to replace all adsense ads but so far they are successfully replaced 1st instance of adsense advt and I am sure in future they will hit more. There could be 2 approaches 1) Fool yontoo runtime by putting some misleading divs in html document to save actual ads, 2) Completely disable yontoo by working out some client side script (javascript) which can fail/crash yontoo runtime and so will fail it's purpose of replacing ads. You can visit my blog (http://blogs.digitss.com) and see on top-right corner, if you find that google ad replaced with something similar to image attached with question - it means your computer/browser is infected too. Looking forward to reply from webmasters, if someone has already wrote some code/plugin to make website (and google ads) safe from yontoo or similar runtime. FYI: it was able to push this runtime in all browsers installed on machine. So a dangerous threat. And yes, I am just using Google ads - not sure if yontoo runtime is doing trick against other ad networks or not? I am sure they must be doing it with some handful of ad networks.

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  • What's so difficult about SVN merges? [closed]

    - by Mason Wheeler
    Possible Duplicate: I’m a Subversion geek, why should I consider or not consider Mercurial or Git or any other DVCS? Every once in a while, you hear someone saying that distributed version control (Git, HG) is inherently better than centralized version control (like SVN) because merging is difficult and painful in SVN. The thing is, I've never had any trouble with merging in SVN, and since you only ever hear that claim being made by DVCS advocates, and not by actual SVN users, it tends to remind me of those obnoxious commercials on TV where they try to sell you something you don't need by having bumbling actors pretend that the thing you already have and works just fine is incredibly difficult to use. And the use case that's invariably brought up is re-merging a branch, which again reminds me of those strawman product advertisements; if you know what you're doing, you shouldn't (and shouldn't ever have to) re-merge a branch in the first place. (Of course it's difficult to do when you're doing something fundamentally wrong and silly!) So, discounting the ridiculous strawman use case, what is there in SVN merging that is inherently more difficult than merging in a DVCS system?

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  • XNA - Error while rendering a texture to a 2D render target via SpriteBatch

    - by Jared B
    I've got this simple code that uses SpriteBatch to draw a texture onto a RenderTarget2D: private void drawScene(GameTime g) { GraphicsDevice.Clear(skyColor); GraphicsDevice.SetRenderTarget(targetScene); drawSunAndMoon(); effect.Fog = true; GraphicsDevice.SetVertexBuffer(line); effect.MainEffect.CurrentTechnique.Passes[0].Apply(); GraphicsDevice.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2); GraphicsDevice.SetRenderTarget(null); SceneTexture = targetScene; } private void drawPostProcessing(GameTime g) { effect.SceneTexture = SceneTexture; GraphicsDevice.SetRenderTarget(targetBloom); spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.Opaque, null, null, null); { if (Bloom) effect.BlurEffect.CurrentTechnique.Passes[0].Apply(); spriteBatch.Draw( targetScene, new Rectangle(0, 0, Window.ClientBounds.Width, Window.ClientBounds.Height), Color.White); } spriteBatch.End(); BloomTexture = targetBloom; GraphicsDevice.SetRenderTarget(null); } Both methods are called from my Draw(GameTime gameTime) function. First drawScene is called, then drawPostProcessing is called. The thing is, when I run this code I get an error on the spriteBatch.Draw call: The render target must not be set on the device when it is used as a texture. I already found the solution, which is to draw the actual render target (targetScene) to the texture so it doesn't create a reference to the loaded render target. However, to my knowledge, the only way of doing this is to write: GraphicsDevice.SetRenderTarget(outputTarget) SpriteBatch.Draw(inputTarget, ...) GraphicsDevice.SetRenderTarget(null) Which encounters the same exact problem I'm having right now. So, the question I'm asking is: how would I render inputTarget to outputTarget without reference issues?

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  • Loading a new instance of a class through XML not working quite right

    - by Thegluestickman
    I'm having trouble with XML and XNA. I want to be able to load weapon settings through XML to make my weapons easier to make and to have less code in the actual project file. So I started out making a basic XML document, something to just assign variables with. But no matter what I changed it gave me a new error every time. The code below gives me a "XML element 'Tag' not found", I added and it started to say the variables weren't found. What I wanted to do in the XML file as well, was load a texture for the file too. So I created a static class to hold my texture values, then in the Texture tag of my XML document I would set it to that instance too. I think that's were the problems are occuring because that's where the "XML element 'Tag' not found" error is pointing me too. My XML document: <XnaContent> <Asset Type="ConversationEngine.Weapon"> <weaponStrength>0</weaponStrength> <damageModifiers>0</damageModifiers> <speed>0</speed> <magicDefense>0</magicDefense> <description>0</description> <identifier>0</identifier> <weaponTexture>LoadWeaponTextures.ironSword</weaponTexture> </Asset> </XnaContent> My Class to load the weapon XML: public static class LoadWeaponXML { static Weapon Weapons; public static Weapon WeaponLoad(ContentManager content, int id) { Weapons = content.Load<Weapon>(@"Weapons/" + id); return Weapons; } } public static class LoadWeaponTextures { public static Texture2D ironSword; public static void TextureLoad(ContentManager content) { ironSword = content.Load<Texture2D>("Sword"); } } I'm not entirely sure if you can load textures through XML, but any help would be greatly appreciated.

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  • Oracle’s Java Community Outreach Plan

    - by Tori Wieldt
    As the steward of Java, Oracle recognizes the importance and value of the Java community, and the relevant role it plays in keeping Java the largest, most vibrant developer community in the world.   In order to increase Oracle’s touch with Java developers worldwide, we are shifting our focus from a flagship JavaOne event followed by several regional JavaOne conferences, to a new outreach model which continues with the JavaOne flagship event, as well as a mix of online content, regional Java Tours, and regional 3rd party event participation.  1. JavaOne JavaOne continues to remain the premier hub for Java developers where you are given the opportunity to improve your Java technical skills, and interact with other members of the Java community. JavaOne is centered on open collaboration and sharing, and Oracle will continue to invest in JavaOne as a unique stand-alone event for the Java community. Oracle recognizes that many developers cannot attend JavaOne in person, therefore Oracle will share the wealth of the unique event material to those developers through a new and easy-to-access online Java program. While online JavaOne content cannot address the importance of actual face-to-face community/developer engagements and networking, online content does aide in extending the Java technical learning opportunity to a broader collection of developers. 2. Java Developer Day Tours Oracle will execute regional Java Developer Days with recognized Java User Groups (JUGs) with participation from Java Evangelist and Java Champions. This allows local, regional specific Java topics to be addressed both by Oracle and the Java community. In addition, Oracle will deliver more virtual technical content programs to reach developers where an existing JUG may not have a presence. 3. Sponsorship of Community-Driven Regional Events/Conferences Oracle also recognizes that improved community dialog and relations are achievable by continued Oracle sponsorship and onsite participation at both established/well-recognized 3rd party events and new emerging/growing 3rd party events. Oracle’s ultimate goal is to be an even better steward for Java by reaching more of the Java ecosystem with face-to-face and online community engagements. We look forward to planning tours and events with you, members of the Java community.

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  • How should I evaluate the Database Solution for Large Data Application

    - by GµårÐïåñ
    Background I have been tasked to write an application that will be a combination of document and inventory management in VB.net which will be used to store document images in TIFF, PDF, XPS, TXT, DOC, PPT and so on as binary data that can be retrieved for viewing, printing, and possible OCR to be searchable as well along with meta data such as sender, recipient, type of document, date, source, etc. So the table would probably be something like: DOC_NAME, DOC_DATE, NOTES, ... DOC_BINARY (where the actual document will be put inside) Help Please I need help with understanding how to evaluate my database options. What my concern is finding a database solution that will not become unstable due to size restrictions, records limitations and performance. Some of the options are MS_SQL, SQL Express, SQLite, mySQL, and Access. Now I can pretty much eliminate Access right off the bat as it is just too limiting and not scalable. I can further eliminate SQL Express because of the 2 GB limit and again scalability. So I believe that leaves me with MS_SQL, SQLite and mySQL (note, I am open to alternatives). And this is where I need help in understanding how to evaluate those databases. The goal is that the data is all in one place (a single file) that will make backup and portability easier. For small volume usage, pretty much any solution will hold for a while, but my goal is to think ahead and make sure its able to withstand heavy large volume usage as well. Another consideration is also the interoperability with .NET and stability of such code to avoid errors and memory leaks. How should I evaluate my database options for this scenario?

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