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• PHP composer question

  - by kdub

  just getting started with composer and I have a couple of questions. When I use composer to add a dependency, the dependency gets added to my folder's Vendor directory. The newly added package not only comes with the source code for that package, but all packagist required files for the developer to test and add that package to packagist repo (composer.json, .travis.yaml, license, readme.md, etc). For my project, do I need to keep the vendor's required packagist files in my project? Can I clean the package folder structure up a little? I added the package, Slim micro framework, which nests the source files three directories deep upon installation, ../vendor/slim/slim/Slim/(source Files). Is it worth moving these files to the top Slim directory like: ../vendor/Slim/(source files)? Or will this ruin the integrity of the package?

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• O'Reilly deal of the week to 23:59 PT 4/Sept/2012 - Master Regular Expressions

  - by TATWORTH

  O'Reilly at http://shop.oreilly.com/category/deals/regular-expressions-owo.do?code=WKRGEX are offering 50% off a range of e-books on mastering Regular Expressions "Take the guesswork out of using regular expressions. Learn powerful tips for matching, extracting, and transforming text as well as the gotchas to avoid. For one week only, SAVE 50% on these e-books and discover a whole new world of mastery over your code." I recommend Mastering Regular Expression to Dot Net developer as it covers the use of regular expressions across a number of environments, including Dot Net.

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• Joomla 2.5 -- Adding a custom field to menu-item-edit-form

  - by philipp

  I would like to add a new Field (Select list of all menu-items) to the menu item-edit form. To do so I was setting up an system plugin with the following directory structure: languageroot/languageroot.php languageroot/form/form.xml As you can see in the posted code, that is all very basic to try out. Only after adding the following lines: <li <?php echo $this-form-getLabel( 'langroot-text', 'main' )? <?php echo $this-form-getInput('langroot-text', 'main' ); ? </li to: /admininstrator/components/com_menus/views/item/tmpl/edit.php a textfield shows up. Is it possible to inject the field without touching the edit.php? Is there anywhere a good tutorial about the JForm api? Is a system-plugin the right kind, or could it be a content plugin, or should it even be a component?

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• Is there a ".d" directory to use to load modules at boot time, opposed to /etc/modules?

  - by gertvdijk

  I am automating some configurations on my systems using Puppet. For a group of machines I want to load a kernel module at boot time. The most elegant way seems to edit /etc/modules and add one on an individual line. However, I would like to use separate files in a ".d" directory structure for easier maintainability. For modprobe and specifying the options for modules, there's /etc/modprobe.d/, but what's the most elegant way for actually loading modules at boot time using a single new file? Basically, I'm looking for the non-existing /etc/modules.d/ directory. Any suggestions?

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• Is premature optimization really the root of all evil?

  - by Craig Day

  A colleague of mine today committed a class called ThreadLocalFormat, which basically moved instances of Java Format classes into a thread local, since they are not thread safe and "relatively expensive" to create. I wrote a quick test and calculated that I could create 200,000 instances a second, asked him was he creating that many, to which he answered "nowhere near that many". He's a great programmer and everyone on the team is highly skilled so we have no problem understanding the resulting code, but it was clearly a case of optimizing where there is no real need. He backed the code out at my request. What do you think? Is this a case of "premature optimization" and how bad is it really?

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• How can I be prepared to join a company?

  - by Aerovistae

  There's more to it than that, but this title was the best way I could think of to sum it up. I'm a senior in a good computer science program, and I'm graduating early. About to start interviews and all whatnot. I'm not a super-experienced programmer, not one of those people who started in middle school. I'm decent at this, but I'm not among the best, not nearly. I have to do an awful lot of googling. So today I'm meeting some fellow for lunch at a campus cafe to discuss some front-end details when this tall, good-looking guy begs pardon, says he's new to campus, says he's wondering if we know where he can go to sign up for recruiting developers. Quickly evolves into long conversation: he's the CEO of a seems-to-be-doing-well start-up. Hiring passionate interns and full-times. Sounds great! I take one look at his site on my own computer later, immediately spot a major bug. No idea how to fix it, but I see it. I go over to the page code, and good god. It's the standard amount of code you would expect from a full-scale web application, a couple dozen pages of HTML and scripts. I don't even know where to start reading it. I've built sites from scratch, but obviously never on that scale, nor have I ever worked on one of that scale. I have no idea which bit might generate the bug. But that sets me thinking: How could someone like me possibly settle into an environment like that? A start-up is a very high-pressure working environment. I don't know if I can work at that pace under those constraints-- I would hate to let people down. And with only 10 employees, it's not like anyone has much time to help you get your bearings. Somewhere in there is a question. Can you see it? I'm asking for general advice here. Maybe even anecdotal advice. Is joining a start-up right out of college a scary process? Am I overestimating what it would take to figure out the mass of code behind this site? What's the likelihood a decent but only moderately-experienced coder could earn his pay at such a place? For instance, I know nothing of server-side/back-end programming. Never touched it. That scares me.

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• Getting a texture from a renderbuffer in OpenGL?

  - by Rushyo

  I've got a renderbuffer (DepthStencil) in an FBO and I need to get a texture from it. I can't have both a DepthComponent texture and a DepthStencil renderbuffer in the FBO, it seems, so I need some way to convert the renderbuffer to a DepthComponent texture after I'm done with it for use later down the pipeline. I've tried plenty of techniques to grab the depth component from the renderbuffer for weeks but I always come out with junk. All I want at the end is the same texture I'd get from an FBO if I wasn't using a renderbuffer. Can anyone post some comprehensive instructions or code that covers this seemingly simple operation? EDIT: Linky to an extract version of the code http://dl.dropbox.com/u/9279501/fbo.cs Screeny of the Depth of Field effect + FBO - without depth(!) http://i.stack.imgur.com/Hj9Oe.jpg Screeny without Depth of Field effect + FBO - depth working fine http://i.stack.imgur.com/boOm1.jpg

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• Problem with WindowsXp on VirtualBox in 12.10

  - by umpirsky

  When I try to start it I get: Failed to open a session for the virtual machine WindowsXp. The virtual machine 'WindowsXp' has terminated unexpectedly during startup with exit code 1. Result Code: NS_ERROR_FAILURE (0x80004005) Component: Machine Interface: IMachine {5eaa9319-62fc-4b0a-843c-0cb1940f8a91} and in another dialog: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing '/etc/init.d/vboxdrv setup' as root. If it is available in your distribution, you should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary. When I try to run: $ sudo /etc/init.d/vboxdrv setup [sudo] password for umpirsky: sudo: /etc/init.d/vboxdrv: command not found Any idea?

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• wild card redirects issue giving error this webpage has a redirect loop

  - by kath

  In my website I changed or better word modified the directory name ""vehicles-cars"" to ""vehicles-cars-for-sale"" when i tryed to redirect using wild card redirect my old directory name to new directory name in my web hosting cpanel account. every time when i open pages from that directory i am getting error code this webpage has a redirect loop the website is php the problem is that that my lots of pages from old directory are indexed in googles and they are getting duplicate contents i really need some advice what to do with this problem here is .htaccess file code for redirect thanks RewriteEngine on RewriteCond %{HTTP_HOST} ^adsbuz\.com$ [OR] RewriteCond %{HTTP_HOST} ^www\.adsbuz\.com$ RewriteRule ^vehicles\-cars\/?(.*)$ "http\:\/\/adsbuz\.com\/vehicles\-cars\-for\-sale\/$1" [R=301,L]

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• Can it be useful to build an application starting with the GUI?

  - by Grant Palin

  The trend in application design and development seems to be starting with the "guts": the domain, then data access, then infrastructure, etc. The GUI seems to usually come later in the process. I wonder if it could ever be useful to build the GUI first... My rationale is that by building at least a prototype GUI, you gain a better idea of what needs to happen behind the scenes, and so are in a better position to start work on the domain and supporting code. I can see an issue with this practice in that if the supporting code is not yet written, there won't be much for the GUI layer to actually do. Perhaps building mock objects or throwaway classes (somewhat like is done in unit testing) would provide just enough of a foundation to build the GUI on initially. Might this be a feasible idea for a real project? Maybe we could add GDD (GUI Driven Development) to the acronym stable...

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• How well do free-to-open-source-projects policies work in practice?

  - by Steve314

  In comparison with an open source license and requesting donations, is a free-for-open-source-projects (or free for non-commercial developers) closed source and otherwise commercial project likely to get more license fees? Or just to alienate potential users? Assume the project has value to programmers - I'm looking for generalizations here, though specific examples comparing existing projects will be very interesting. What I have in mind involves code generating programming utilities. And one issue I can think of, either way, is a near total inability to enforce any license restrictions. After all, I can't go around the internet demanding that everyone show me their source code just in case!

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• Add Custom Color Changing RGB LED Lighting to Your Next Project

  - by Jason Fitzpatrick

  While this specific project is a really neat back-lit bookcase with customizable LED lights galore, you could easily add the exact same setup to just about anything you wanted to give some LED love. The core of the project is a set of addressable LED modules, an Arduino board, and a simple bit of code. You could use it to make a 70s style mood lighting box, add color changing accents to your media room, or any other number of fun projects just by cloning this project and extending/shortening the wires where appropriate. The control module allows for solid colors, multi-colors, and animations. Hit up the link below for more information including the source code. ExpeditInvaders [via IKEAHacker] HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

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• I am trying to delete a string from list then write it back to a file [closed]

  - by bradb

  def mang (grocerystock): mangchoice=int(input("What would you like to do? \n 1):Add a new product to the list? \n 2): Remove a product from the list? \n 3: Change the quantity of an item \n 4): Change the price of an item \n 5): View items and their quantity and price")) if mangchoice == 1: infile=open("grocery_stock.txt", 'a') name=input("Please enter the new product's name would you like to add:") quant=int(input("Please enter the new product's quantity")) price=float(input("Please enter the new product's price")) grocerystock[0]=name grocerystock[1]=quant grocerystock[2]=price gS=str(grocerystock) gs=gS.strip("[',']") infile.write(gs + '\n') if mangchoice == 2: namedelete=input("what item would you like to remove") a=open("grocery_stock.txt", 'r') data_list= a.readlines() a.close() print (data_list) del data_list[namedelete] b= open ("grocery_stock.txt", 'w') b.writelines(data_list) b.close() def intro(): choice=(int(input("Would you like to go to Managerial mode or Shop mode?(press 1 for Managerial and 2 for shop mode, to quit press 3)"))) if choice == 1: print ('lets go') mang(grocerystock) elif choice == 0 : print ('loser') grocerystock= ["","",""] intro() This is all the code i have written so far any ideas? The code that i am trying to delte is under if mangchoice == 2:

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• Is writing comments inside methods not a good practice?

  - by Srini Kandula

  A friend told me that writing comments inside methods is not good. He said that we should have comments only for the method definitions(javadocs) but not inside the method body. It seems he read in a book that having comments inside the code means there is a problem in the code. I don't quite understand his reasoning. I think writing comments inside the method body is good and it helps other developers to understand it better and faster. Please provide your comments.

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• Even More Steroids for JEditorPane

  - by Geertjan

  Got some help from Ralph today and now the JEditorPane is as I want it, e.g., code folds are now supported once you click in the JEditorPane, though there are still some side effects, since this is not how anyone anticipated NetBeans editor APIs being used. But, so far, the side effects (e.g., now the hyperlinks work, but they open a new JavaScript file when you click on one of them, instead of jumping within the JEditorPane itself) are not so terrible. Error checking is also done now, which wasn't there before, i.e., red underlines and error annotations in the right margin. And maybe it's my imagination, but the editor feels a lot snappier, e.g., in code completion, than before. I've checked in the changes, they're all in this file: http://java.net/projects/nb-api-samples/sources/api-samples/content/versions/7.3/misc/CMSBackOffice2/CMSBackOffice2-editor/src/main/java/com/mycompany/cmsbackoffice2editor/GeneralTab.java

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• Is deserializing complex objects instead of creating them a good idea, in test setup?

  - by Chris Bye

  I'm writing tests for a component that takes very complex objects as input. These tests are mixes of tests against already existing components, and test-first tests for new features. Instead of re-creating my input objects (this would be a large chunk of code) or reading one from our data store, I had the thought to serialize a live instance of one of these objects, and just deserialize it into test setup. I can't decide if this is a reasonable idea that will save effort in long run, or whether it's the worst idea that I've ever had, causing those that will maintain this code will hunt me down as soon as they read it. Is deserialization of inputs a valid means of test setup in some cases? To give a sense of scale of what I'm dealing with, the size of serialization output for one of these input objects is 93KB. Obtained by, in C#: new BinaryFormatter().Serialize((Stream)fileStream, myObject);

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• Does anyone prefer proportional fonts?

  - by Jason Baker

  I was reading the wikipedia article on programming style and noticed something in an argument against vertically aligned code: Reliance on mono-spaced font; tabular formatting assumes that the editor uses a fixed-width font. Most modern code editors support proportional fonts, and the programmer may prefer to use a proportional font for readability. To be honest, I don't think I've ever met a programmer who preferred a proportional font. Nor can I think of any really good reasons for using them. Why would someone prefer a proportional font?

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• asp.net web apps: are OnServerValidate necessary with custom validators

  - by peroija

  I recently created a .net web app that used over 200 custom validators on one page. I wrote code for both ClientValidationFunction and OnServerValidate which results in a ton of repetitive code. My sql statements are parameterized, I have functions that pull data from input fields and validates them before passing to the sql statements or stored procedures. And the javascript validates the fields before the page submits. So essentially the data is clean and valid before it even hits the OnServerValidate and clean after it anyways due to the aforementioned steps. This makes me question, is OnServerValidate really needed when I validate on the clientside?

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• apache2 server returns (400) syntax error

  - by Thomas E

  There are 900 paths in the googles index to our homepage containing illegal characters. Example: http://www.seriesam.com/filmaffisch/TC%4NK Note the character "%4N". I have no idea where they come from, but would like to update google index with a correct URL using "canonical" in the html code. But the problem is our apache2 server immediately sends a 400 error if you click the link above. How can I configure apache2 not to give an error code, but instead treat the link above as "correct"? Maybe replacing the char %4N with nothing.

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• How to be a zero-bug programmer?

  - by Elaine

  My boss ever told me that as a good programmer, who should be able to ensure the code he/she changed must be reliable, correct, thoroughly self-verified, who should completely understand what all the results and impacts that he/she did or revised will cause. I did try my best to be as this kind of programmer, test again and again. But.. bugs are still there. How could I be a zero-bug programmer? know every char of my code will cause and effect?

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• PHP OOP: Am i following right way?

  - by sineverba

  I'm learning OOP (PHP). I've realized my own CRUD Class, that performs some kind of queries SQL. Btw, a Gasoline asked us to realize a smart, simple web-app where he can update prices of his gasoline (gasoline, diesel, lpg) and via an API i could recall them and display in his site. So, I did create a new Class Gasoline but it perform some methods of CRUD Class public function getPrezzoBenzina($id) { $prezzo_benzina = $this->distributore->sql('SELECT prezzo_benzina FROM prezzi WHERE id = '.$id); return $prezzo_benzina } And so on (code is pseudocode, just to explain). I could perform all my code only with help of Crud Class... without necessity of Class Gasoline. So, what I'm missing about OOP? Where am I wrong?

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• Comparison between a value with static type Array and a possibly unrelated type Class

  - by Kaoru

  I got this error: Comparison between a value with static type Array and a possibly unrelated type Class. After i modify the class to many classes (before that, everything is on 1 class (all of the functions)), but after i move everything to many classes (all the functions is not on 1 class), that error appear. How to solve this? I am using AS3 and as3isolib Library. Here is the code after i modify the function: if (Constant.dude.y < Constant._numY) { if (Constant.dude.sprites != marioBackClass) { Constant.dude.sprites = [marioBackClass]; Constant.dudeDir = "Up"; } } Here is the code before i change the function to many classes: if (dude.y < ._numY) { if (dude.sprites.toString() != marioBackClass.toString()) { dude.sprites = [marioBackClass]; dudeDir = "Up"; } }

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• Sensor based vs. AABB based collision

  - by Hillel

  I'm trying to write a simple collision system, which will probably be primarily used for 2D platformers, and I've been planning out an AABB system for a few weeks now, which will work seamlessly with my grid data structure optimization. I picked AABB because I want a simple system, but I also want it to be perfect. Now, I've been hearing a lot lately about a different method to handle collision, using sensors, which are placed in the important parts of the entity. I understand it's a good way to handle slopes, better than AABB collision. The thing is, I can't find a basic explanation of how it works, let alone a comparison of it and the AABB method. If someone could explain it to me, or point me to a good tutorial, I'd very much appreciate it, and also a comparison of the advantages and disadvantages of the two techniques would be nice.

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• Class Versus Struct

  - by Prometheus87

  In C++ and other influenced languages there is a construct called Structure (struct) and we all know the class. Both are capable of holding functions and variables. some differences are 1. Class is given memory in heap and struct is given memory in stack 2. in class variable are private by default and in struct thy are public My question is that struct was somehow abandoned for Class. Why? other that abstraction, a struct can do all the same stuff a class does. Then why abandon it?

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• Entity Framework 4.0 POCO Classes and Data Services

  If you've flipped on the POCO (Plain Ol' CLR Objects) code generation T4 templates for Entity Framework to enable testing or just 'cuz you like the code better, you might find that you lack the ability to expose that same model via Data Services as OData (Open Data). If you surf to the feed, you'll likely see something like this: The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later....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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