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  • Specifying and applying broad changes to a program

    - by Victor Nicollet
    How do you handle incomplete feature requests, when the ones asking for the feature cannot possibly write a complete request? Consider an imaginary situation. You are a tech lead working on a piece of software that revolves around managing profiles (maybe they're contacts in a CRM-type application, or employees in an HR application), with many operations being directly or indirectly performed on those profiles — edit fields, add comments, attach documents, send e-mail... The higher-ups decide that a lock functionality should be added whereby a profile can be locked to prevent anyone else from doing any operations on it until it's unlocked — this feature would be used by security agents to prevent anyone from touching a profile pending a security audit. Obviously, such a feature interacts with many other existing features related to profiles. For example: Can one add a comment to a locked profile? Can one see e-mails that were sent by the system to the owner of a locked profile? Can one see who recently edited a locked profile? If an e-mail was in the process of being sent when the lock happened, is the e-mail sending canceled, delayed or performed as if nothing happened? If I just changed a profile and click the "cancel" link on the confirmation, does the lock prevent the cancel or does it still go through? In all of these cases, how do I tell the user that a lock is in place? Depending on the software, there could be hundreds of such interactions, and each interaction requires a decision — is the lock going to apply and if it does, how will it be displayed to the user? And the higher-ups asking for the feature probably only see a small fraction of these, so you will probably have a lot of questions coming up while you are working on the feature. How would you and your team handle this? Would you expect the higher-ups to come up with a complete description of all cases where the lock should apply (and how), and treat all other cases as if the lock did not exist? Would you try to determine all potential interactions based on existing specifications and code, list them and ask the higher-ups to make a decision on all those where the decision is not obvious? Would you just start working and ask questions as they come up? Would you try to change their minds and settle on a more easily described feature with similar effects? The information about existing features is, as I understand it, in the code — how do you bridge the gap between the decision-makers and that information they cannot access?

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  • What are the best patterns/designs for stateful API development?

    - by Svante
    I am about to implement a API for my TCP/IP server written in Java. Right now I have a temporary method that takes a String, executes a command based on the String and returns a String basically like the following. public void communicate(BufferedReader in, PrintWriter out) { while(true) { out.println(handleCommand(in.readLine())); } } private String handleCommand(String command) { if (command.equals("command1") { // do stuff return "Command 1 executed"; } else if (command.equals("command2") { // do some other stuff return "Command 2 executed"; } } I really want to do something more extensible, smarter and stateful, so I could handle more complex and stateful commands and without the method/class getting bloated. How would you start? Suggestions, ideas, or links for further reading are very welcome.

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  • What is the most reliable session storage in PHP: Memcache, database or files?

    - by user1179459
    What is the best and most safest way to handle PHP sessions. Is the best way to store sessions in: Database (more reliable, but high bottleneck, slow speed, not good for high database usage websites)? Memcache (super fast, but distributed more security problems, chances of loosing data when the server restarted and chances of loosing data when the cache is full)? Files (default option, I guess slow since it reads and writes from file I/O, less security, etc). Which method is the best? What are the problems and good things of each of those approaches?

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  • memory and time intensive php task

    - by Goddard
    Sorry if this question has been asked before, but I couldn't find anything usable. I'm working on a project for a client and currently I have to loop through the users table which is about 3000 records and still growing. I have to do some calculations on a nightly basis which I am going to be using cron/php. The calculations script uses about 3.5mb of memory and takes about 1 second to run. When loading individual users my current php setup handles this fine, but if I try and loop through the user list my php script execution time runs out. I've read after doing some searching that I can make the page reload itself after each user calculation and just keep my previous place in the loop and this sounds like a good idea, but I wanted to hear some opinions from others that have handled similar situations and how you handled these types of tasks. Thanks.

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  • Could these people get arrested? [closed]

    - by Vinicius Horta
    I have seen many of what is called 'private servers' mmorpg (multiplayer online games), which uses stolen sources,modified executable, clients and server. People launch up their own server using VPS or dedicated server and distribute online service among players disclaiming it has educational purposes only, saying they are studying the game engine and selling items for players disclaming it as 'donations', so it seems like they are getting donations to keep studying. We all know it's a comercial method. All of it is copyrighted material from enterprise ABCD. (ABCD = Fictional name, I'm not mentioning names). At their website they include the following: "Private Server XXXX" does not allow/support any conection to any company/organization associated with the game "XXXX". If you are anyway affiliated with enterprise "XXXXXXX", or any other company/organization associated with the game "XXXX" you may not view/open/read/execute/play/download any part of "Private Server XXXX" nor view "Private Server XXXX" website, if any company/organization requests you to investigate our website/server, you may not view "Private SERVER XXXX" or execute any action mentioned above. Any person caught disobeting this disclaimer will be punish to the fulleste extent of law. Can this guys get arrested? Do they disclaimer works? If I'm owner of enterprise X and I know people stole my source and are using them but they have such disclaimer I'm not allowed to investigate them?

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  • Determining an application's dependencies

    - by gpuguy
    I have developed an application using Windows Forms in C++ (IDE MS VC++ 2010). Some parts of the application also use MFC, and OpenCV. I want to send the application to my cleint for interim testing on his own machine. I have not developed any installer for the application, so I will be sending him an .EXE file. I want the client to not face any difficulties in replicating the environment, and therefore not lose any time. Can somebody suggest me what software (such as MS VC++ Runtime, .NET Framework, Windows SDK, etc.) should be installed on the client's machine for successfull testing of the application? Note: The OS (Windows 7) and hardware are exactly the same on both sides.

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  • Is it possible to test a theory?

    - by user363295
    We are a group of students who are working on a theory in software engineering (talking about the theory takes a lot of time so I just skip that). Implementing the theory is impossible, due to technical limitations, but it can be proven on a paper logically. We've been pushed to do a testing on it, so it can be proved that way too (although we bleieve that's not possible!), now: Basically, is it possible to test something like this? If it is, what type of testing should we use? I heard,its possible to handout a brief about it to some experts and asking about their opinion (not sure if that's true), is that a testing method? if it is, what does it called? and how exactly can be done?

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  • How do you balance the speed of Sprints with the customer's conservative adoption schedule?

    - by Cheeso
    I'd prefer to have sprints that last 3-4 weeks, but customers don't want to adopt new feature/function every 3-4 weeks. Existing customers are conservative and, once we meet their minimum bar for features and capabilities, they like to remain on a stable release for much longer than 4 weeks. Even a 3-month cycle would be pushing it for them. On the other hand, newer customers tend to have more feature requests, and are willing to follow sprints. But this willingness dissipates after we've met their bar. How do you balance the need for rapid sprints with the customer's conservative view of application change? I'm particularly interested in SaaS scenarios.

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  • Is ROA a specific form of doing SOA?

    - by JohnDoDo
    I have read somewhere that ROA (Resource Oriented Architecture) is SOA (Service Oriented Architecture) with specific constraints added. SOA is the abstract concept of combining discrete pieces of software and ROA is an implementation of SOA with all of the constraints of RESTful services applied to it: SOA = the concept ROA = the concept + specific implementation details I also had my share of posts saying that ROA is different than SOA, then simply fallback to statements like "ROA is REST" and "SOA is SOAP" and presenting the same more or less pertinent comparisons and differences between SOAP and REST. So just to clear up my confusion: Is ROA a specific form of doing SOA?

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  • Is it bad practise to call a controller action from a view that was rendered by another controller?

    - by marco-fiset
    Let's say I have an OrderController which handles orders. The user adds products to it through the view, and then the final price gets calculated through an AJAX call to a controller action. The price calculation logic is implemented in a seperate class and used in a controller action. What happens is that I have many views from different controllers that need to use that particular action. I'd like to have some kind of a PriceController that I could call an action on. But then the view would have to know about that PriceController and call an action on it. Is it bad practice for a view to call an action on a different controller from which it was rendered?

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  • How to Convince management that a specific product training is important to QA?

    - by Rahul
    I am leading a QA team of 10 people. we have been received the request for a training of a ETL dataware housing tool for QA, Support and Development. But however the management does not feel that it is important for QA to be involved in such a training as it is support and development team who will be involved ih developing or fixing the issues in the product. How do I convince the management that this training is very important from the QA perspective as this is the team that will find bugs and which will reduce the maintainance cost?

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  • Does it make sense to write build scripts in C++?

    - by Klaim
    I'm using CMake to generate my projects IDE/makefiles, but I still need to call custom "scripts" to manipulate my compiled files or even generate code. In previous projects I've been using Python and it was OK, but now I'm having serious trouble managing a lot of dependencies in two very big projects I'm working on so I want to minimize the dependencies everywhere. Someone suggested to me to use C++ to write my build scripts instead of adding a language dependency just for that. The projects themeselves already use C++ so there are several advantages that I can see: to build the whole project, only a C++ compiler and CMake would be necessary, nothing else (all the other dependencies are C or C++); C++ type safety (when using modern C++) makes everything easier to get "correct"; it's also the language I know the better so I'm more at ease with it even if I'm able to write some good Python code; potential gain in execution speed (but i don't think it will really be perceptible); However, I think there might be some drawbacks and I'm not sure of the real impact as I didn't try yet: might be longer to write the code (that said I'm not sure because I'm efficient enough in C++ to write something that work quickly, so maybe for this system it wouldn't be so long to write) (compilation time shouldn't be a problem for this case); I must assume that all the text files I'll read as input are in UTF-8, I'm not sure it can be easilly checked at runtime in C++ and the language will not check it for you; libraries in C++ are harder to manage than in scripting languages; I lack experience and forsight so maybe I'm missing advantages and drawbacks. So the question is: does it make sense to use C++ for this? do you have experiences to report and do you see advantages and disadvantages that might be important?

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  • Is it illegal to forward copyrighted content? [closed]

    - by Mike
    Ok, this may be a strange question, but let's start: If I illegally download a movie (for example...) from a HTTP Web Server, there are many routers between me and the Web Server which are forwarding the data to my PC. As I understand, the owners of the routers are not legally responsible for the data they forward (please correct if I'm wrong). What if I would install a client of a peer-to-peer network on my PC and this client (peer) would forward copyrighted content received from peers to other peers? Hope someone understand what I mean ;-) Any answer or comment would be highly appreciated. Mike Update 1: I'm asking this question because I want to develop a p2p-application and try to figure out how to prevent illegal content sharing/distribution (if forwarding content is really illegal...) Update 2: What if the data forwarded by my peer is encrypted, so I'm technically not able to read and check it?

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  • Amazon Careers website - are resumes processed in plain text format only?

    - by sapphiremirage
    The submission site has the following options: "Please upload your resume (Word Document, max size: 512 KB) OR Please copy and paste the text version of your file here", with a text box below the latter option. I went ahead and uploaded my shiny LaTeX resume (as a PDF), despite the fact that they seem to want a Word Document, and there didn't seem to be any issues. However, when I went back to edit my profile, there was no evidence that my PDF had been uploaded, other than a text version of my resume, awfully formatted and clearly stripped from the PDF, sitting in the text box below "Please copy and paste the text version of your file here". Exasperated, I did a quick and dirty copy of the text from my resume into a Word doc and uploaded that. Same result: no evidence of a file uploaded, just a stripped text version in the textbox. What I'm wondering now is, are they only going to look at the text version of my resume? If that's the case then I'm obviously going to edit it so that it looks halfway decent and doesn't contain such atrocities from the conversion as "Other Skills: LTEX". I can pretty little text files without too much effort, so this isn't that big of deal. However, my LaTeX resume is going to look better than anything I can do in plain text, so if the site is actually keeping a copy of that, then I certainly don't want to override it. Has anyone here either gone through the Amazon hiring process or interviewed candidates and know how this works? (i.e. When on site with Amazon, did the interviewers have diversely formatted resumes, or did they all look suspiciously similar)

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  • How does Requiring users to Periodically Change their Passwords Improve Security? [closed]

    - by Bob Kaufman
    I've had the same password for some sites for years with no regrets. Meanwhile, at work, I find myself being forced to change passwords every two to three months. My thinking is that if a password gets compromised, requiring that I change it several weeks out isn't going to protect me or the network very much. Moreover, I find that by being required to change passwords frequently, I degenerate into a predictable password pattern (e.g., BearsFan111, BearsFan222, ...) which results in easier to remember and easier to guess passwords. Is there a sound argument for requiring that passwords be changed periodically?

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  • EAV - is it really bad in all scenarios?

    - by Giedrius
    I'm thinking to use EAV for some of the stuff in one of the projects, but all questions about it in stackoverflow end up to answers calling EAV an anti pattern. But I'm wondering, if is it that wrong in all cases? Let's say shop product entity, it has common features, like name, description, image, price, etc., that take part in logic many places and has (semi)unique features, like watch and beach ball would be described by completely different aspects. So I think EAV would fit for storing those (semi)unique features? All this is assuming, that for showing product list, it is enough info in product table (that means no EAV is involved) and just when showing one product/comparing up to 5 products/etc. data saved using EAV is used. I've seen such approach in Magento commerce and it is quite popular, so may be there are cases, when EAV is reasonable?

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  • Best way: restructure an existing Team Foundation Server (TFS) solution

    - by dhh
    In my department we are developing several smaller AddOns for some unified communication server. For versioning and distributed development we use a Team Foundation Server 2012. But: there is only one large TFS solution for all of our applications and libraries: Main Solution Applications App 1 App 2 App 3 Externals Libraries Lib 1 Lib 2 Tools The "Application" path contains all main applications. Those are not depending on each other, but they depend on the Libraries and Externals projects. The "Externals" path contains some external DLLs referenced in our Applications and Libraries. The Libraries path contains commonly used libs (UI templates, Helper classes, etc.). They do not depend on each other and they are referenced in the Libraries and the Tools projects. The Tools path contains some helper programs like setup helpers, update web services, etc. Now, there's some major points why I'd like to change this structure: We can't use server builds. It's uncomfortable to manage TFS scrum management with sprints, impediments, etc. with a solution structure like that. Every developer always has access to all projects in the solution. A complete build lasts too long if one accidentally hits [F6] in Visual Studio... What would you change in this solution? How would you break those projects into smaller Solutions, how should those solutions be structured. My first approach would be, to create one TFS project for each Application, Library and Tool. But how can I ensure that e.g. App 2 always contains the newest version of Lib 1? Do I have to monitor changes on Lib 1 and update App 2 manually as soon as the Lib changes? Or can I somehow force Visual Studio to always use the newest version of an external project somehow?

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  • Topics for covering in-depth programming knowledge

    - by black_belt
    I pursued my bachelors' degree in business administration, but my interest in Information Technology led me to acquire some knowledge of PHP programming and MySQL database. I find programming so interesting that I haven't applied for any job since my graduation. Currently I am staying home and just trying to acquire in-depth knowledge of PHP programming. So far I have developed couple of websites and web applications including Inventory+ Point of Sale Software and an Accounting system for small organizations. I aim to have knowledge that a Computer Science graduate should have, and for that I want to read books but I have no idea where to start from. Could you please suggest me some books and topics that I should study on? Thanks a lot :)

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  • What are good Software Project Management Texts / Resources?

    - by locster
    I'm looking for ideas and resources pertaining to software project management, specifically resources that I can direct project managers to in order to broaden their knowledge of the subject. So for example an obvious choice here would be The Mythical Man Month - I do think that this would be an appropriate suggested first read for /some/, but not all. Probably for managers that arrive at the job with more of a management background rather than a technical one TMMM might be a bit 'heavy'. I'm looking for similar texts that convey more or less the same messages, but perhaps in a form more appropriate for people from a wide range of backgrounds. Thanks.

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  • Should I avoid or embrace asking questions of other developers on the job?

    - by T.K.
    As a CS undergraduate, the people around me are either learning or are paid to teach me, but as a software developer, the people around me have tasks of their own. They aren't paid to teach me, and conversely, I am paid to contribute. When I first started working as a software developer co-op, I was introduced to a huge code base written in a language I had never used before. I had plenty of questions, but didn't want to bother my co-workers with all of them - it wasted their time and hurt my pride. Instead, I spent a lot of time bouncing between IDE and browser, trying to make sense of what had already been written and differentiate between expected behavior and symptoms of bugs. I'd ask my co-workers when I felt that the root of my lack of understanding was an in-house concept that I wouldn't find on the internet, but aside from that, I tried to confine my questions to lunch hours. Naturally, there were occasions where I wasted time trying to understand something in code on the internet that had, at its heart, an in-house concept, but overall, I felt I was productive enough during my first semester, contributing about as much as one could expect and gaining a pretty decent understanding of large parts of the product. I was wondering what senior developers felt about that mindset. Should new developers ask more questions to get to speed faster, or should they do their own research for themselves? I see benefits to both mindsets, and anticipate a large variety of responses, but I figure new developers might appreciate your answers without thinking to ask this question.

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  • What are some techniques I can use to refactor Object Oriented code into Functional code?

    - by tieTYT
    I've spent about 20-40 hours developing part of a game using JavaScript and HTML5 canvas. When I started I had no idea what I was doing. So it started as a proof of concept and is coming along nicely now, but it has no automated tests. The game is starting to become complex enough that it could benefit from some automated testing, but it seems tough to do because the code depends on mutating global state. I'd like to refactor the whole thing using Underscore.js, a functional programming library for JavaScript. Part of me thinks I should just start from scratch using a Functional Programming style and testing. But, I think refactoring the imperative code into declarative code might be a better learning experience and a safer way to get to my current state of functionality. Problem is, I know what I want my code to look like in the end, but I don't know how to turn my current code into it. I'm hoping some people here could give me some tips a la the Refactoring book and Working Effectively With Legacy Code. For example, as a first step I'm thinking about "banning" global state. Take every function that uses a global variable and pass it in as a parameter instead. Next step may be to "ban" mutation, and to always return a new object. Any advice would be appreciated. I've never taken OO code and refactored it into Functional code before.

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  • Are dynamic languages at disadvantage for agile development?

    - by Gerenuk
    From what I've read agile development often involves refactoring or reverse engineering code into diagrams. Of course there is much more than that, but if we consider the practices that rely on these two methods, are dynamically typed languages at disadvantage? It seem static typing would make refactoring and reverse engineering much easier? Refactoring or (automated) reverse engineering is hard if not impossible in dynamically typed languages? What does real world projects tell about usage of dynamically typed languages for agile methodology?

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  • If a variable has getter and setter, should it be public?

    - by Oni
    I am an about to graduate Computer Science student so probably this is a stupid question. If I have a class with a variable that is private and the class have getter and setter for that variable. Why don't make that variable public? The only case I think you have to use getters and setters is if you need to do some operation besides the set or the get. Example: void my_class::set_variable(int x){ /* Some operation like updating a log */ this->variable = x; } Thanks in advance!

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  • Start building websites using Java

    - by Alex coady
    I'm a web developer and I've used PHP, along with MySQL, Javascript, jQuery etc; all of which I'm very confident with and can use on a professional level. What I'm wanting to do however, is to start using Java instead of PHP as I'm creating sites that need to be scalable. I really need a starting point. I can program in Java, I understand the language but have never used it for the web. Links, tutorials, examples would be a great help. I have also considered using Scala (the language Twitter is written in).. but don't really understand the benefits. Please no jargon; I need clear information that essentially takes me through the process of creating a very simple website using Java; I'm more than capable of building the site once that's done.. I think. I've previously used Eclipse so if assume I can. Thanks in advance!

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  • How much do they study in the best universities, relative to the other universities?

    - by Velizar Hristov
    In my university, our total required weekly attendance (for lectures and tutorials/similar) is about 12 hours. It was like that in the first year, and then everything required extremely little effort - I believe that if I invested as much efforts as someone who is studying for medicine or law, I could have learnt everything for 1-2 months - if not less! Now I'm second year and it doesn't look like it's going to be too different. This concerns me about the people who study in Oxford, Cambridge or Imperial College. It would be weird if they study that little, and it would be very concerning if they do study very hard, because this would mean that by the end of the year, their first year students will be better than our average third year student. Which is bad news for me, given that I share the market with them. I know the question can't have an absolutely accurate answer, but it can still be answered quite definitely, and it's relevant to many people.

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