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  • Why is Java the lingua franca at so many institutions?

    - by Billy ONeal
    EDIT: This question at first seems to be bashing Java, and I guess at this point it is a bit. However, the bigger point I am trying to make is why any one single language is chosen as the one end all be all solution to all problems. Java happens to be the one that's used so that's the one I had to beat on here, but I'm not intentionality ripping Java a new one :) I don't like Java in most academic settings. I'm not saying the language itself is bad -- it has several extremely desirable aspects, most importantly the ability to run without recompilation on most any platform. Nothing wrong with using the language for Your Next App ^TM. (Not something I would personally do, but that's more because I have less experience with it, rather than it's design being poor) I think it is a waste that high level CS courses are taught using Java as a language. Too many of my co-students cannot program worth a damn, because they don't know how to work in a non-garbage-collected world. They don't fundamentally understand the machines they are programming for. When someone can work outside of a garbage collected world, they can work inside of one, but not vice versa. GC is a tool, not a crutch. But the way it is used to teach computer science students is a as a crutch. Computer science should not teach an entire suite of courses tailored to a single language. Students leave with the idea that all good design is idiomatic Java design, and that Object Oriented Design is the ONE TRUE WAY THAT IS THE ONLY WAY THINGS CAN BE DONE. Other languages, at least one of them not being a garbage collected language, should be used in teaching, in order to give the graduate a better understanding of the machines. It is an embarrassment that somebody with a PHD in CS from a respected institution cannot program their way out of a paper bag. What's worse, is that when I talk to those CS professors who actually do understand how things operate, they share feelings like this, that we're doing a disservice to our students by doing everything in Java. (Note that the above would be the same if I replaced it with any other language, generally using a single language is the problem, not Java itself) In total, I feel I can no longer respect any kind of degree at all -- when I can't see those around me able to program their way out of fizzbuzz problems. Why/how did it get to be this way?

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  • Isometric Collision Detection

    - by Sleepy Rhino
    I am having some issues with trying to detect collision of two isometric tile. I have tried plotting the lines between each point on the tile and then checking for line intercepts however that didn't work (probably due to incorrect formula) After looking into this for awhile today I believe I am thinking to much into it and there must be a easier way. I am not looking for code just some advise on the best way to achieve detection of overlap

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  • Calculate pi to an accuracy of 5 decimal places?

    - by pgras
    In this message at point 18 I saw following programming question: Given that Pi can be estimated using the function 4 * (1 – 1/3 + 1/5 – 1/7 + …) with more terms giving greater accuracy, write a function that calculates Pi to an accuracy of 5 decimal places. So I know how to implement the given function and how to choose how "far" I should calculate, but how can I tell when I've reached the "accuracy of 5 decimal places" ?

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  • Voronoi regions of a (convex) polygon.

    - by Xavura
    I'm looking to add circle-polygon collisions to my Separating Axis Theorem collision detection. The metanet software tutorial (http://www.metanetsoftware.com/technique/tutorialA.html#section3) on SAT, which I discovered in the answer to a question I found when searching, talks about voronoi regions. I'm having trouble finding material on how I would calculate these regions for an arbitrary convex polygon and aleo how I would determine if a point is in one + which. The tutorial does contain source code but it's a .fla and I don't have Flash unfortunately.

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  • Semantic algorithms

    - by Mythago
    I have a more theoretical than practical question. I'll start with an example - when I get an email and open it on my iPad, there is a feature, which recognizes the timestamp from the text and offers me to create an event in the calendar. Simply told, I want to know theoretically how it's done - I believe it's some kind of semantic parsing, and I would like if someone could point me to some resources, where I can read more about this.

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  • Making a language switch main menu button in Drupal

    - by Let_Me_Be
    I have a bilingual site in Drupal. The problem is that I hate the language switch block taking up so much space (sometimes the only thing in the sidebar is the language switch block). So what I would love to have is language switch menu item, that would point to the other language (other then the current one). Something like this: | Home | Projects | BlaBla | | Cesky | after swith: | Domu | Projekty | Blabla | | English | Is that possible without writing a whole new module?

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  • Ubuntu Touch se lance à la conquête de l'écosystème mobile, l'OS de Canonical pourra-t-il s'imposer face à la concurrence ?

    Ubuntu Touch se lance à la conquête de l'écosystème mobile l'OS de Canonical pourra-t-il s'imposer face à la concurrence ? Le marché des smartphones a le vent en poupe. Les ventes de tablettes sont sur le point de surpasser celles des PC. L'univers du mobile devient donc un secteur incontournable de l'IT.Actuellement, Google domine largement le monde du mobile avec Android. iOS figure en en bonne position et Windows Phone innove pour se faire une place au soleil. L'écosystème système mobile est...

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  • How to do proper Alpha in XNA?

    - by Soshimo
    Okay, I've read several articles, tutorials, and questions regarding this. Most point to the same technique which doesn't solve my problem. I need the ability to create semi-transparent sprites (texture2D's really) and have them overlay another sprite. I can achieve that somewhat with the code samples I've found but I'm not satisfied with the results and I know there is a way to do this. In mobile programming (BREW) we did it old school and actually checked each pixel for transparency before rendering. In this case it seems to render the sprite below it blended with the alpha above it. This may be an artifact of how I'm rendering the texture but, as I said before, all examples point to this one technique. Before I go any further I'll go ahead and paste my example code. public void Draw(SpriteBatch batch, Camera camera, float alpha) { int tileMapWidth = Width; int tileMapHeight = Height; batch.Begin(SpriteSortMode.Texture, BlendState.AlphaBlend, SamplerState.PointWrap, DepthStencilState.Default, RasterizerState.CullNone, null, camera.TransformMatrix); for (int x = 0; x < tileMapWidth; x++) { for (int y = 0; y < tileMapHeight; y++) { int tileIndex = _map[y, x]; if (tileIndex != -1) { Texture2D texture = _tileTextures[tileIndex]; batch.Draw( texture, new Rectangle( (x * Engine.TileWidth), (y * Engine.TileHeight), Engine.TileWidth, Engine.TileHeight), new Color(new Vector4(1f, 1f, 1f, alpha ))); } } } batch.End(); } As you can see, in this code I'm using the overloaded SpriteBatch.Begin method which takes, among other things, a blend state. I'm almost positive that's my problem. I don't want to BLEND the sprites, I want them to be transparent when alpha is 0. In this example I can set alpha to 0 but it still renders both tiles, with the lower z ordered sprite showing through, discolored because of the blending. This is not a desired effect, I want the higher z-ordered sprite to fade out and not effect the color beneath it in such a manner. I might be way off here as I'm fairly new to XNA development so feel free to steer me in the correct direction in the event I'm going down the wrong rabbit hole. TIA

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  • Is there going to be a friendly Unity settings window?

    - by Valorin
    Currently, as far as I am aware, you need to use the CompizConfig Settings Manager application to play with the Unity configuration settings. While this makes sense, from a technical point of view, it requires the user to know about the settings manager, install it, and then find the Unity options within it. Not very user friendly. Is there a user friendly configuration application planned that will offer all the configuration options in an easy-to-use for new people fashion?

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  • 5 Reasons to Having Sitemap For SEO

    When you talk about optimizing a site, there are lot many ways and tricks which you can use for it. But from my point of view, there is a way whose importance is mostly underestimated. We call it Sitemaps. This is one of the most important and fruitful way to optimize a site.

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  • How can I move a library inside a project's source tree and compiling static binaries?

    - by AbrahamVanHelpsing
    How can I move a library inside a project's source tree and compiling static binaries? I want to use a particular tool that utilizes ANCIENT binaries without upgrading it's API usage. This way I can use the old libraries inside the single binary without wrecking the local host environment. I am on nix with netbeans/eclipse/code::blocks. I don't have a problem reading, just looking for a starting point. Any thoughts?

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  • How do you approach tutorials

    - by aurel
    I get lots of interesting tutorials through feeds and sometimes I implement them step by step, other times I just read through them and note anything that I do not know. When ever I implement them I takes a long time - starting the project, typing the code (as I feel there is no point to copy and paste ), then going back and forth between browser and editing program All in all, I am interested to know how do you learn from the tutorials (I'm no where close to being an expert). Or if you don't use tutorials, is there any other way to learn?

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  • Will not supporting IE or older browsers drive away potential visitors/users of my site? [closed]

    - by XToro
    Normally a SO browser but this question doesn't fit there, hopefully it fits here. I just want to ask from web designers' point of view if it's wrong to not care about supporting Internet Explorer or older browsers. The site I'm designing looks great in all browsers except IE9-. There are certain things that IE doesn't support or behave like other browsers; webkit stuff, some CSS styles, drop-and-drop files from OS etc etc, but it all works great in Safari, FireFox, Chrome etc. Should I be that concerned? I know there are several people that use IE, but it's limitations have just been causing me more work by having to come up with workarounds. From what I've read, many of the issues I've been having should be solved with IE10, but not everybody keeps up to date. I know of several people who are still using IE6! Again, I'm hoping this is the right place to ask a question like this, and if not, please point me to the right stack exchange site instead of just downvoting me. Thanks! EDIT: Upon further research.... So far this year, IE(all versions) and Chrome have been neck and neck as the top, with IE only squeaking by Chrome, and FireFox a close 3rd. But looking at the top 10 browsers, IE6 doesn't even show up on this list in which the lowest percentage is 1.92%. Source : http://www.w3counter.com/globalstats.php?year=2012&month=7 Having a look at this other site, IE6 shows up in 11th place out of 12, just before "Other" http://www.sitepoint.com/browser-trends-february-2012/ This makes me a little more wary of not spending more time on IE compatibility. However, my site will not be going to a live beta until October or November, and I'm hoping that IE10 will have more features coded into it. Currently, I've written my upload page which is a "drag-and-drop files from the OS" type to simply display "IE is not supported", leaving no other option for IE users to upload pictures because I've spent so much time writing the uploader which does many things other than just upload the files. I will be changing this kinda cold "Access Denied" to a suggestion to upgrade, or install other browsers, with download links for each. Big thanks for the posts here and the interesting links!

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  • Create a Monitoring Server for SQL Server with PowerShell

    At some point you are going to need a notification system for a range of events that occur in your servers. Laerte Junior shows how you can even set up temporary or permanent alerts for any WMI events to give you a system that fits your server environment perfectly. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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  • How to Write Blogs to Improve SEO

    Writing content for a website can often feel like a bit of a chore but it is an absolute necessity to ensure that your website promotes your company in the correct manner. From a search engine optimisation point of view though, there are other elements that need to be addressed when creating and posting blogs to improve your SEO.

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  • Highlighting repeating groups in SSRS 2008 R2 charts

    In a typical bar chart, the height of the bars represents the value of the data along the X axis and the Y axis represents the category of the data point. All these values can be classified in logical groups depending upon the logic used for analysis. One general requirement that arises in the case of repeating groups, is to highlight these groups without representing it on the X or Y scale. In this tip we will look at how to address this requirement.

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  • Different Ways to Restore a SQL Server Database

    This article describes the SQL Server database restore principles for full backups, differential backups and transaction log backups and how to perform the restores to get to a particular point in time. This tip describes SQL Server database restore principles on a database that is using the FULL recovery model. FREE eBook – "45 Database Performance Tips for Developers"Improve your database performance with 45 tips from SQL Server MVPs and industry experts. Get the eBook here.

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  • State machine interpreters

    - by saadtaame
    I wrote my own state machine tool in C and at this point I'm faced with two choices for specifying state machines. Crafting a little language and writing a interpreter. Writing a compiler for that language. I know the advantages/disadvantages of each. I'd like to know what choices game programmers have made for their games. If you've used a state machine in your game in any form, I'd be interested in knowing how you did it.

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  • Singleton

    Imagine that you need some global logging system in your application.You need to be able log your messages to some file at any point of your application, but also you need to numerate your messages.How can you accomplish this? - SINGLETON

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  • Why You Should Start Researching Keywords Weekly

    Keyword research is very important when it comes to SEO, you need to find good keywords, which you are able to easily rank for, keywords which are going to bring in traffic to your website, after all what would be the point in having a website, if nobody saw it? To start with, keyword research can seem very hard to do, but it's really easy when you start to get the hang of it, with every project you have, every website, you need to have a list of keywords, these are the keywords your going to want to rank...

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  • The Integrity Challenge

    - by andyleonard
    Introduction This post is the twenty-eighth part of a ramble-rant about the software business. The current posts in this series are: Goodwill, Negative and Positive Visions, Quests, Missions Right, Wrong, and Style Follow Me Balance, Part 1 Balance, Part 2 Definition of a Great Team The 15-Minute Meeting Metaproblems: Drama The Right Question Software is Organic, Part 1 Metaproblem: Terror I Don't Work On My Car A Turning Point Human Doings Everything Changes Getting It Right The First Time One-Time...(read more)

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