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• How to keep a big and complex software product maintainable over the years?

  - by chrmue

  I have been working as a software developer for many years now. It has been my experience that projects get more complex and unmaintainable as more developers get involved in the development of the product. It seems that software at a certain stage of development has the tendency to get "hackier" and "hackier" especially when none of the team members that defined the architecture work at the company any more. I find it frustrating that a developer who has to change something has a hard time getting the big picture of the architecture. Therefore, there is a tendency to fix problems or make changes in a way that works against the original architecture. The result is code that gets more and more complex and even harder to understand. Is there any helpful advice on how to keep source code really maintainable over the years?

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• Anti Cloud Open Source License

  - by Steve

  I'm working on a browser based open source monitoring project that I want to be free to the community. What I'm worried about is someone taking the project, renaming it, deploying it in the cloud and start charging people who don't even know my project exists. I know I maybe shouldn't mind, but it just sticks in my throat a bit if someone took a free ride like that and contributed nothing back. Is there any common open source license that can prevent this. I know GPL or AGPL don't.

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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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• Missing return statement when using .charAt [migrated]

  - by Timothy Butters

  I need to write a code that returns the number of vowels in a word, I keep getting an error in my code asking for a missing return statement. Any solutions please? :3 import java.util.*; public class vowels { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Please type your name."); String name = input.nextLine(); System.out.println("Congratulations, your name has "+ countVowels(name) +" vowels."); } public static int countVowels(String str) { int count = 0; for (int i=0; i < str.length(); i++) { // char c = str.charAt(i); if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'o' || str.charAt(i) == 'i' || str.charAt(i) == 'u') count = count + 1; } } }

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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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• What modelling technique do you use for your continuous design?

  - by d3prok

  Together with my teammates, I'm trying to self-learn XP and apply its principles. We're successfully working in TDD and happily refactoring our code and design. However we're having problems with the overall view of the design of the project. Lately we were wondering what would be the "good" practices for an effective continuous design of the code. We're not strictly seeking the right model, like CRC cards, communication diagrams, etc., instead we're looking for a technique to constantly collaborate on the high level view of the system (not too high though). I'll try to explain myself better: I'm actually interested in the way CRC cards are used to brainstorm a model and I would mix them with some very rough UML diagrams (that we already use). However, what we're looking for are some principles for deciding when, how and how much to model during our iterations. Have you any suggestion on this matter? For example, when your teammates and you know you need a design session and how your meetings work?

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• SharePoint 2010 ECB Menu on any column

  - by Sahil Malik

  SharePoint 2010 Training: more information You know that ECB Menu in SharePoint 2007? Well in SharePoint 2010 you can very easily move it around on any column you wish. What you do is, open the view in SharePoint Designer, then you click on the field you wish to see the ECB menu in, then you will see a little floatie button with this on it ">", then, you click on that floatie, and it shows a little popup with 2 checkboxes in it. "Common xsl:value-of Tasks"- Show List Item Menu- Show Link To Item You check the "Show List Item Menu" checkbox, and off you go - now the ECB menu is available on the other column. Enjoy! Read full article ....

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• Few New Features Added to Geekswithblogs.net

  - by Staff of Geeks

  After reviewing some of the feedback from our bloggers we added a couple new features to Geekswithblogs.net and there are still more to come.  Here is a list of the features we added.   Fixed the Twitter parser to better support URLs and Hash Tags Added some hooks behind the scenes to tags posts with common keywords automatically Added Facebook likes and Tweets to the bottom of every post Cleaned up a few skins Images on the main page for bloggers who use Gravatar or Twitter integration Random bug fixes based on Log   We are definitely working to make Geekswithblogs.net faster and better.  If you have any suggestions, please feel free to share them with the team.  On a side note, if that suggestion is move to WordPress, I will reply to you with stop writing ASP.NET for your day job and move to PHP.  That request is the equivalent in my eyes.  If we have enough bloggers leave the Microsoft .NET Platform for their main source of income, we might consider it.   Technorati Tags: Geekswithblogs.net,Features,Version 4.0

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• Does approaching SICP in clojure have a high chance of success? [on hold]

  - by ironicaldiction

  I am a third year bachelor student in a software engineering program, and I brought up the idea of reading SICP to an adviser to gain a deeper and more fundamental understanding of the principles behind all this software we engineer. He suggested not to learn scheme to complete the book (because it's not as common as modern dialects of lisp) but to do the exercises in clojure instead. My worry is that completing exercises in clojure instead of scheme will make an already difficult book tortuous. If I do attempt the book's exercises in the more modern clojure, will it be difficult to succeed (for example, because I can't find any real solutions, the syntax they teach for scheme is different, etc.), or do you think approaching the book in clojure could be just as successful as approaching it in scheme? I'm really not knowledgeable enough about either clojure or scheme to make an argument about this, so I wanted to know if I should bring it up or not.

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• Top Tips and Tricks Documents for Oracle Install Base

  - by Oracle_EBS

   EBS Install Base Implementer?  Consider the following references as identified by Oracle Install Base Engineers as our Top Tips and Tricks knowledge documents. Top Install Base Tips and Tricks Documents Troubleshoot: Oracle Install Base (Doc ID 1351860.1) How to Use Installed Base Error Transaction Diagnostics Script IBtxnerr.sql (Doc ID 365697.1) Cannot See Customer Product Instance in Installed Base after Item is Shipped (Doc ID 1309943.1) How To Obtain the CSE/CSI Log and Debug Files For Your Oracle Support Engineer (Doc ID 239627.1) Troubleshooting Install Base Errors in the Transaction Errors Processing Form (Doc ID 577978.1) How to Solve Installed Base Error Transactions Using Installed Base Data Correction and Synchronization Program (Doc ID 734933.1) Common Installed Base Transaction Error Messages (Doc ID 856825.1) Install Base Transaction Errors Master Repository (Doc ID 1289858.1) How To Remove Extended Attributes From IB? (Doc ID 1357667.1) 

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• Python GUI and MVC - get variable from other module

  - by lyvic

  I am trying to split my code in different layers: GUI, reading the GUI, creating input, calculating the model, interpreting data, creating view, sending the view to the GUI. I got the idea of the MVC and would like to try to build my program that way. But I'm a little confused about how to exchange information between those modules. I'm running into problems with undefined global names and so forth. Example code how I'm trying to get out of this can be found here: http://stackoverflow.com/questions/17385373/setup-a-mvc-mvw-system-in-python-with-tkinter

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• Why appending to a list in Scala should have O(n) time complexity?

  - by Jubbat

  I am learning Scala at the moment and I just read that the execution time of the append operation for a list (:+) grows linearly with the size of the list. Appending to a list seems like a pretty common operation. Why should the idiomatic way to do this be prepending the components and then reversing the list? It can't also be a design failure as implementation could be changed at any point. From my point of view, both prepending and appending should be O(1). Is there any legitimate reason for this?

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• Good book for improving c# skills?

  - by JMarsch

  Hello: I was asked to recommend a good book for a mid-level experienced developer who wants to improve their coding skills (c# developer). I was thinking about: Code Complete: http://www.amazon.com/Code-Complete-Practical-Handbook-Construction/dp/0735619670/ref=sr_1_1?ie=UTF8&qid=1291221928&sr=8-1 The Pragmatic Programmer: http://www.amazon.com/Pragmatic-Programmer-Journeyman-Master/dp/020161622X/ref=sr_1_3?ie=UTF8&qid=1291221928&sr=8-3 or Effective C#: http://www.amazon.com/Effective-Covers-4-0-Specific-Development/dp/0321658701/ref=sr_1_1?s=books&ie=UTF8&qid=1291222038&sr=1-1 What do you think about those? Any other suggestions?

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• Instantiate proper class based on some input

  - by Adam Backstrom

  I'm attempting to understand how "switch as a code smell" applies when the proper code path is determined by some observable piece of data. My Webapp object sets an internal "host" object based on the hostname of the current request. Each Host subclass corresponds to one possible hostname and application configuration: WwwHost, ApiHost, etc. What is an OOP way for a host subclass to accept responsibility for a specific hostname, and for Webapp to get an instance of the appropriate subclass? Currently, the hostname check and Host instantiation exists within the Webapp object. I could move the test into a static method within the Host subclasses, but I would still need to explicitly list those subclasses in Webapp unless I restructure further. It seems like any solution will require new subclasses to be added to some centralized list.

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• Database Change Auditing - Part of or Abstracted from ORM / Application Layer?

  - by BrandonV

  My fellow developers and I are at a crossroads in how to go about continuing our auditing of database changes. Most of our applications log changes via INSERT, UPDATE, and DELETE triggers. A few of our newer applications audit at the ORM layer; specifically using Hibernate Envers. While ORM layer auditing provides a much cleaner interface and is much more maintainable, it will not capture any manual database changes that are made. ORM layer auditing also means that our libraries will currently require a dependency on our ORM implementation unless, specifically in our case for example, JPA plans on providing something in the near future. Is there a common paradigm that addresses this?

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• Salting a public hash

  - by Sathvik

  Does it make any sense at all to salt a hash which might be available publicly? It doesn't really make sense to me, but does anyone actually do that? UPDATE - Some more info: An acquaintance of mine has a common salted-hash function which he uses throughout his code. So I was wondering if it made any sense at-all, to do so. Here's the function he used: hashlib.sha256(string+SALT).hexdigest() Update2: Sorry if it wasn't clear. By available publicly I meant, that it is rendered in the HTML of the project (for linking, etc) & can thus be easily read by a third party. The project is a python based web-app which involves user-created pages which are tracked using their hashes like myproject.com/hash so thus revealing the hash publicly. So my question is, whether in any circumstances would any sane programmer salt such a hash? Question: Using hashlib.sha256(string+SALT).hexdigest() vs hashlib.sha256(string).hexdigest() , when the hash isn't a secret.

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• brackets in php templates

  - by Othman

  I have a script, and now it's the perfect time to have an option to change theme templates. I was looking forward to store these files in php files, or html files. with CSS file. I looked over some codes and I found that they use brackets to refer to the variable. Here's an example of a template block: <div class='block_div'> <center>{title}</center> {content} </div> I know that I can use PHP vars usering <?=$var;?>. However, I think the one above is better, and I looked over the web to find anything about it but I couldn't. My Question is how I can use these brackets in my php or html code. to let the user changing the template only not the code!

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• Shader inputs in a general purpouse engine

  - by dreta

  I'm not familiar with SDKs like Unity or UDK that much, so i can't check this off hand. Do general purpouse engines allow users to create custom uniform variables? The way i see it, and the way i have implemented it in an engine i'm writing to learn 3D, is that there is a "set" of uniforms provided by the engine and if you want to write a custom shader then you utilize uniforms you need to create a wanted effect. Now, the thing is, first of all i'm not an artist, second of all, i didn't have a chance to create complex scenes yet. So my question is, is it common practice to define variables that the engine provides and only allow the user to work with what they're given? Allowing users to add custom programs and use them where they want is not hard, but i have issues imagining how you'd go about doing the same for uniforms.

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• New ZFS Storage Appliance Objection Handling Document

  - by Cinzia Mascanzoni

  View and download the new ZFS Storage Appliance objection handling document from the Oracle HW Technical Resource Center here. If you do not already have an account to access the Oracle Hardware Technical Resource Centre you need first to register. Please click here and follow the instructions to register.  Ths document aims to address the most common objections encountered  when positioning the ZFS Storage Appliance disk systems in production environments. It will help you to be more successful in establishing the undeniable benefits of the Oracle ZFS Storage Appliance in your customers' IT environments.

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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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• Why is better to use external JavaScript or libraries ; and is it prefered to use jquery meaning more security?

  - by shareef

  I read this article Unobtrusive JavaScript with jQuery and I noticed these points in the slide page 11 some companies strip JavaScript at the firewall some run the NoScript Firefox extension to protect themselves from common XSS and CSRF attacks many mobile devices ignore JavaScript entirely screen readers do execute JavaScript but accessibility issues mean you may not want them to I did not understand the fourth point. What does it mean? I need your comment and responses on these points. Is not using JavaScript and switching to libraries like jQuery worth it? UPDATE 1 : whats the meaning of Unobtrusive JavaScript with jQuery ? and yes it does not say we should use libraries but we should have them on external files for that reason i asked my question.

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• Separate urls for a set of pages sharing 80% duplicate content

  - by user131003

  Issue: Currently my site has one particular page which has country specific data. So I've URLs like : mysite.com/sale-united-states mysite.com/sale-united-kingdom mysite.com/sale-sweden etc. All these pages have 80-90% common content and 10-20% country specific content. currently all these pages canonically point to mysite.com/sale-united-states. The problem is when someone searches for "sale Sweden", Google correctly shows mysite.com/sale-united-states page, which does not feel correct as it shows US page instead of Sweden. Now I'm thinking of not using canonical url so that country specific urls are produced in Google saerch. But I'm not sure how 80% duplicate content is going to affect SEO? What should be the recommended approach for this situation? A friend of mine suggested a "separate subdomain per country" based approach but it seems overkill for one page.

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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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• 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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• Use a GUI designer or write it yourself for the desktop?

  - by TheLQ

  Writing a GUI for a program has always been a daunting, depressing, and frustrating task. It doesn't matter which language, its extremely hard to get what I want. Especially in compiled languages like Java where a change takes a minute or two to build. The result is that I increasingly use GUI designers for some of my project. Sure their is some spagetti code, but as long as I leave the configuration and a note saying "This was designed with X" I have no qualms with doing this. Is this an okay way to design a GUI? More importantly, is this what most people do? Or is the common way to just sit down and write it out?

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