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• Linux for web Development [closed]

  - by Mr.TAMER

  I usually used windows for developing desktop applications, but recently I've almost abandoned desktop apps and have been doing web development so much. I'm using many web technologies and languages, especially Ruby on Rails, and I'm facing too many problems using windows. Besides, I personally want to move to Linux. So, what's the most helpful and comfortable Linux distribution for web development? I have a short but handy experience using Ubuntu desktop, so I'm familiar with the generics of Linux (like -as a simple example- using the command line), and I don't have any problem in getting used to any distribution (I know I may face some difficulties, but again I have no problem), I only want the best one for web development (especially rails!!). If the question doesn't belong to this site, I'll be glad to migrate it to the appropriate one.

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• Security in a private web service

  - by Oni

  I am developing a web site and a web service for a small on-line game. Technically, I'll be using Express (node.js) and MongoDB+Redis for the databases. This the structure I came up with: One Express server that will server as the Web Service. This will connect to the databases. One Express server that will provide the web site. It will connect to the Web Service to retrieve and push the information. iOS and Android application will be able to interact with the WebService. Taking into account: It is a small game. The information transferred is not critical. There will NOT be third party applications. At least for the moment. My concern is about which level of security I should use in each of the scenarios: Security of the user playing through web browser Security of the applications and the Web Server connecting to the WS. I have take a look at the different options and: OAuth and/or Https is too much for this scenario, isn't it? Will be a good option to hash the user and password with MD5(or similar) and some salt? I would like to get some directions and investigate by my own rather than getting a response like "you should you use this node.js module..." Thanks in advance,

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• What encoding is used by javax.xml.transform.Transformer?

  - by Simon Reeves

  Please can you answer a couple of questions based on the code below (excludes the try/catch blocks), which transforms input XML and XSL files into an output XSL-FO file: File xslFile = new File("inXslFile.xsl"); File xmlFile = new File("sourceXmlFile.xml"); TransformerFactory tFactory = TransformerFactory.newInstance(); Transformer transformer = tFactory.newTransformer(new StreamSource(xslFile)); FileOutputStream fos = new FileOutputStream(new File("outFoFile.fo"); transformer.transform(new StreamSource(xmlFile), new StreamResult(fos)); inXslFile is encoded using UTF-8 - however there are no tags in file which states this. sourceXmlFile is UTF-8 encoded and there may be a metatag at start of file indicating this. am currently using Java 6 with intention of upgrading in the future. What encoding is used when reading the xslFile? What encoding is used when reading the xmlFile? What encoding will be applied to the FO outfile? How can I obtain the info (properties) for 1 - 3? Is there a method call? How can the properties in 4 be altered - using configuration and dynamically? if known - Where is there info (web site) on this that I can read - I have looked without much success.

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• How advanced are author-recognition methods?

  - by Nick Rtz

  From a written text by an author if a computer program analyses the text, how much can a computer program tell today about the author of some (long enough to be statistically significant) texts? Can the computer program even tell with "certainty" whether a man or a woman wrote this text based solely on the contents of the text and not an investigation such as ip numbers etc? I'm interested to know if there are algorithms in use for instance to automatically know whether an author was male or female or similar characteristics of an author that a computer program can decide based on analyses of the written text by an author. It could be useful to know before you read a message what a computer analyses says about the author, do you agree? If I for instance get a longer message from my wife that she has had an accident in Nigeria and the computer program says that with 99 % probability the message was written by a male author in his sixties of non-caucasian origin or likewise, or by somebody who is not my wife, then the computer program could help me investigate why a certain message differs in characteristics. There can also be other uses for instance just detecting outliers in a geographically or demographically bounded larger data set. Scam detection is the obvious use I'm thinking of but there could also be other uses. Are there already such programs that analyse a written text to tell something about the author based on word choice, use of pronouns, unusual language usage, or likewise?

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• I want to sell my software [C# desktop application] but I was Stuck in licencing [closed]

  - by Surendra Soni

  Possible Duplicate: if I use .NET Framework for my application, do I have to pay anything to Microsoft? I have developed a desktop application called "Institute Management System" which has modules like Class manager, Subject manager, Topics manager, Student inquiry manager Student admission manager, Fees manager, Exam manager etc. using C# for the front end and MS Access for the back end. The main problem is that I want to sell it and earn some money but I heard that my application needs to be registered at Microsoft, and I would have to get a license from them for selling, and have to pay them money too. I have spent four months developing it at my own expense, and worked very hard to develop it. So I want some tips, advice, any suggestion for the same. Please also tell me the procedure for all of the required registrations and payment issues. And I also want to ask you if you Can you suggest any other technology where I develop my application and sell it without worrying about licencing and related issues? I am now more confused about that "MS technology is open source or not? "

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• What are the consequences of immutable classes with references to mutable classes?

  - by glenviewjeff

  I've recently begun adopting the best practice of designing my classes to be immutable per Effective Java [Bloch2008]. I have a series of interrelated questions about degrees of mutability and their consequences. I have run into situations where a (Java) class I implemented is only "internally immutable" because it uses references to other mutable classes. In this case, the class under development appears from the external environment to have state. Do any of the benefits (see below) of immutable classes hold true even by only "internally immutable" classes? Is there an accepted term for the aforementioned "internal mutability"? Wikipedia's immutable object page uses the unsourced term "deep immutability" to describe an object whose references are also immutable. Is the distinction between mutability and side-effect-ness/state important? Josh Bloch lists the following benefits of immutable classes: are simple to construct, test, and use are automatically thread-safe and have no synchronization issues do not need a copy constructor do not need an implementation of clone allow hashCode to use lazy initialization, and to cache its return value do not need to be copied defensively when used as a field make good Map keys and Set elements (these objects must not change state while in the collection) have their class invariant established once upon construction, and it never needs to be checked again always have "failure atomicity" (a term used by Joshua Bloch) : if an immutable object throws an exception, it's never left in an undesirable or indeterminate state

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• planning the same app for both OSX and iOS

  - by P5music

  I would like to ask which is the best strategy for creating an application that will be developed both on Mac and iPad, so to make minumum effort to port it from one platform to the other, starting from iPad, for example, but rather trying to make both at the same time. The application, in fact, would be an iPad-style one on the Mac too. How should I have to plan the project? Which are the main tricks to easily get the goal?

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• The best Drupal and JavaScript developer?

  - by hakanito

  I've read a lot of JS articles and books by Nicholas Zakas and Addy Osmani, in my opinion evangelists in the field. But I am also a Drupal developer, and these guys are not. Many of the techniques they're talking about such as AMD and RequireJS are great, but it's hard to know how to integrate them when it comes to Drupal (and do it right, ofc). So my question is if there are any recognized developer/s out there with strong JavaScript AND Drupal experience?

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• How to determine number of resources to be allocated in a software project

  - by aditi

  Last day I have been interviewed and the interviwer asked me as given the outline of a project, how can we determine the number of resources to be needed for the same? I donot know to do do so? Is there any standard way of doing so? or is it based on the experience? or how.... I am pretty new in this activity and my knowledge is zero at present .... so any clear explanation with some example(simple) will help me(and people like me) to understand this. Thanks

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• Improving the speed of writing code in C#

  - by Robert Harvey

  Laugh if you want, but I used to develop substantial line-of-business applications in VB6, long before the .NET framework came along. Why, when I was your age, we used to walk two miles in the snow, uphill. Both ways... Love it or hate it, VB6 had a REPL-like feel, and a very rapid development cycle. I would like to know how to come closer to that process in C#. In VB6, I could write a function, execute it, debug it and have it fully functional in a few minutes. I am told this is how the Lisp crowd works. It's a very rapid-fire style of programming. In C# I write a function, then I write a unit test for that function (which is OK, I understand the value of that), then I right-click, run test, wait for the project to compile (takes about 10 seconds right now, which would be an eternity for a REPL loop), and get an exception. Honestly, this feels more like my junior college days, when I used to feed punch cards into a hopper and wait for a printout (exaggerating only slightly for effect). Additionally, my tendency nowadays is to make everything public while I'm testing it. Unit testing with private accessors works fine, but you can't trace through the code (unless, of course, I'm doing something wrong) while you're using them. So what I'd like to know is, what adjustments have you made to your development process in C# to streamline it, and make it possible to write and verify your code very rapidly?

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• Which is better : Storing/retrieving images on/from SQL server or in a directory on server

  - by Pankaj Upadhyay

  I am working on a project in Asp.net MVC and need to work with images. There is an SQL database with a Product table. Every product in the table will have it's own image. I have two ways to do this : 1) Save the image in a web directory and store the URL on database. 2) Store the image in SQL itself in binary format and then retrieve it. Which is a better approach ? Mind you, I have no idea how second method works :-P . I will only learn this if there are merits to the second method

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• Optimizing MySQL -

  - by Josh

  I've been researching how to optimize MySQL a bit, but I still have a few questions. MySQL Primer Results http://pastie.org/private/lzjukl8wacxfjbjhge6vw Based on this, the first problem seems to be that the max_connections limit is too low. I had a similar problem with Apache initially, the max connection limit was set to 100, and the web server would frequently lock up and take an excruciatingly long time to deliver pages. Raising the connection limit to 512 fixed this issue, and I read that raising the connection limit on MySQL to match this was considered good practice. Being that MySQL has actually been "locking up" recently as well (connections have been refused entirely for a few minutes at a time at random intervals) I'm assuming this is the main cause of the issue. However, as far as table cache goes, I'm not sure what I should set this as. I've read that setting this too high can hinder performance further, so should I raise this to right around 551, 560, 600, or do something else? Lastly, as far as raising the join_buffer_size value goes, this doesn't even seem to be included in Debian's my.cnf file by default. Assuming there's not much I can do about adding indexes, should I look into raising this? Any suggested values? Any suggestions in general here would be appreciated as well. Edit: Here's the number of open tables the MySQL server is reporting. I believe this value is related to my question (Opened_tables: 22574)

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• How to choose a job? [closed]

  - by Aadi Droid

  When given multiple opportunities from various software giants, as a fresher out of school how should one decide which company to go for? Just as an example I have offers from two companies, won't name them but the two biggest dream companies for any SDE. While one company offers tremendous learning opportunites and and a good pay but coupled with really bad employee support and perks. While the other offers a relaxed work environment where learning happens by choice, with a slightly lower pay but amazing employee facilities and perks. Assuming the fresher has a plan to go for his masters degree in two years what are the most important things he should be looking at?

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• Splitting up a Rails/Ruby app onto multiple servers

  - by craig.kaminsky

  We recently moved a large application to two machines, both running the same codebase. I. Machine A Web server for public facing application Receives web hook call backs from our ESP Handles a few large, list-processing jobs (uploaded spreadsheets with data) II. Machine B Manages a massive set of (background) jobs but, primarily, focuses on building and assembling newsletters Runs all integration with our NetSuite platform Runs all system maintenance (read: DB) jobs To me, having these two apps running the same codebase (a large, monolithic Rails application) seems 'wrong'. I am wondering if anyone has advice on how to better break up the code for these two apps. While they both need the same DB and, ultimately, the same model code, Machine B has no need for Controllers and Views and it feels wasteful running a full-stack Rails app for its tasks. A couple things came to mind but I'm not sure if I'm trying to solve a problem that doesn't exist: Break the models out into a sub-module on git and include into both apps Build out the Mahcine B app in plain Ruby or a lighter framework like Sinatra (where I could use ActiveRecord with Sinatra in combo with a sub-module for the model folder). I'm new to this scenario and appreciate any and all feedback or direction! Thank you.

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• Can an agile shop really score 12 on the Joel Test?

  - by Simon

  I really like the Joel test, use it myself, and encourage my staff and interviewees to consider it carefully. However I don't think I can ever score more than 9 because a few points seem to contradict the Agile Manifesto, XP and TDD, which are the bedrocks of my world. Specifically: the questions about schedule, specs, testers and quiet working conditions run counter to what we are trying to create and the values that we have adopted in being genuinely agile. So my question is: is it possible for a true Agile shop to score 12?

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• What GUI tools are available for which DVCS?

  - by Macneil

  When I worked at Sun, we used a DVC system called Forte SCCS/Teamware, which used the old SCCS file format, but was a true distributed source code revision control system. One nice feature is that it had strong GUI support: You could bringover and putback changes by simply clicking and dragging. It would draw trees/graphs showing how workspaces relate to each other. You also could have a graph view to display a single file's complete history, which might have had several branches and merges. Allowing you to compare any two points. It also had a strong visual merge tool, to let you accept changes from one of two conflicting files. Naturally, many of the current DVCSs have command line support for these operations, but I'm looking for GUI support in order to use this in a lower-level undergraduate course I'll be teaching. I'm not saying the Forte Teamware solution was perfect, but it did seem to be ahead of the curve. Unfortunately, it's not a viable option to use for my class. Question: What support do the current DVCSs have with regards to GUIs? Do any of them work on Windows, and not just Linux? Are they "ready for prime-time" or still works in progress? Are these standalone or built as plug-ins, e.g., for Eclipse? Note: To help keep this discussion focused I'm only interested in GUI tools. And not a meta-discussion if GUI tools should be used in teaching.

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• iPhone App Store Release Question!

  - by Ahmad Kayyali

  I am developing an Application its purpose to view uploaded files on the host server, and it has a credentials that will be entered on the Login Page to authenticate the user. My Question! when I post my application to the App Store how suppose apple is going to test or at least view my application when Apple needs enter a valid credentials that I am not suppose to know, it's private to my client. Any guide would be greatly appreciated.

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• Questions to ask interviewer in an Interview

  - by chota

  Hello All, I have an SDET interview upcoming week. I have been preparing since long. It is a good company. I am working as SDET since two year. I wonder what questions should i ask to my interviewer regarding testing and other thing. I would appreciate your help if you give me some sample questions that i should ask to my interviewer during the interview. Some of them i thoughts are a) What type of testing methodologies do you use? Do you have triage meeting everyday? What percentage of code coverage is done by unit tests? I do not find these questions to be more effective, i would appreciate if somebody could help me out in coming out with better question?

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• Ruby workflow in Windows

  - by Rig

  I've done some searching and quite haven't come across the answer I am looking for. I do not think this is a duplicate of this question. I believe Windows could be a suitable development environment based on the mix of answers in that question. I have been developing in Ruby (mostly Rails but not entirely) for about a year now for personal projects on a Macbook Pro however that machine has faced an untimely death and has been replaced with a nice Windows 7 machine. Ruby development felt almost natural on the Mac after doing some research and setting up the typical stack. My environment then included the standard (Linux like) stuff built into OSX, Text Wrangler, Git, RVM, et al. Not too much of a deviation from what the 'devotees' tend to assume. Now I am setting up my new Windows box for continuing that development. What would my development environment look like? Should I just cave and run Linux in a VM? Ideally I would develop in Windows native. I am aware of the Windows Ruby installer. It seems decent but its not exactly as nice as RVM in the osx/linux world. Mercurial/Git are available so I would assume they play into the stack. Does one develop entirely in Windows? Does one run a webserver in a Linux VM and use it as a test bed while developing in Windows? Do it all in a VM? What does the standard Windows Ruby developer environment look like and what is the workflow? What would a typical step through be for adding a new feature to an ongoing project and what would the technology stack look like?

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• How to store Role Based Access rights in web application?

  - by JonH

  Currently working on a web based CRM type system that deals with various Modules such as Companies, Contacts, Projects, Sub Projects, etc. A typical CRM type system (asp.net web form, C#, SQL Server backend). We plan to implement role based security so that basically a user can have one or more roles. Roles would be broken down by first the module type such as: -Company -Contact And then by the actions for that module for instance each module would end up with a table such as this: Role1 Example: Module Create Edit Delete View Company Yes Owner Only No Yes Contact Yes Yes Yes Yes In the above case Role1 has two module types (Company, and Contact). For company, the person assigned to this role can create companies, can view companies, can only edit records he/she created and cannot delete. For this same role for the module contact this user can create contacts, edit contacts, delete contacts, and view contacts (full rights basically). I am wondering is it best upon coming into the system to session the user's role with something like a: List<Role> roles; Where the Role class would have some sort of List<Module> modules; (can contain Company, Contact, etc.).? Something to the effect of: class Role{ string name; string desc; List<Module> modules; } And the module action class would have a set of actions (Create, Edit, Delete, etc.) for each module: class ModuleActions{ List<Action> actions; } And the action has a value of whether the user can perform the right: class Action{ string right; } Just a rough idea, I know the action could be an enum and the ModuleAction can probably be eliminated with a List<x, y>. My main question is what would be the best way to store this information in this type of application: Should I store it in the User Session state (I have a session class where I manage things related to the user). I generally load this during the initial loading of the application (global.asax). I can simply tack onto this session. Or should this be loaded at the page load event of each module (page load of company etc..). I eventually need to be able to hide / unhide various buttons / divs based on the user's role and that is what got me thinking to load this via session. Any examples or points would be great.

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• Are project managers useful in Scrum?

  - by Martin Wickman

  There are three roles defined in Scrum: Team, Product Owner and Scrum Master. There is no project manager, instead the project manager job is spread across the three roles. For instance: The Scrum Master: Responsible for the process. Removes impediments. The Product Owner: Manages and prioritizes the list of work to be done to maximize ROI. Represents all interested parties (customers, stakeholders). The Team: Self manage its work by estimating and distributing it among themselves. Responsible for meeting their own commitments. So in Scrum, there is no longer a single person responsible for project success. There is no command-and-control structure in place. That seems to baffle a lot of people, specifically those not used to agile methods, and of course, PM's. I'm really interested in this and what your experiences are, as I think this is one of the things that can make or break a Scrum implementation. Do you agree with Scrum that a project manager is not needed? Do you think such a role is still required? Why?

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• Do people in non-English-speaking countries code in English?

  - by Damovisa

  With over 100 answers to this question it's highly likely that your answer has already been posted. Please don't post an answer unless you have something new to say I've heard it said (by coworkers) that everyone "codes in English" regardless of where they're from. I find that difficult to believe, however I wouldn't be surprised if, for most programming languages, the supported character set is relatively narrow. Have you ever worked in a country where English is not the primary language? If so, what did their code look like? Edit: Code samples would be great, by the way...

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• Work Item Traceability in TFS 2010

  - by Sam Patrick

  I have created a Windows Form project (VS solution) under a TFS 2010 project. I may eventually add more solutions to the TFS project. My question: Can we create a Use Case WIT for a specific solution within a TFS project? Furthermore, is it possible to create a "traceability matrix" that starts at the Use Case level and goes down to the the code level (at least the namespace level) of that particular VS solution?

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• What's the better user experience: Waiting once at startup for a long time or waiting frequently for a short time?

  - by Roflcoptr

  I'm currently design an application that involves a lot of calculation. Now I have generally two possibilities which I have both tested: 1) During startup of the application I calculated only the most important values and these values that consume a lot of time. So the user has to wait approximately 15 seconds during startup. But on the other hand a lot of user interactions require recalculation so that the user often has to wait 2-3 seconds after clicking somewhere until the application has calculated and loaded all values 2) I load everything during startup. This takes from 90 to 120 seconds... This is quite a long time, but the big advantage is that all the user interactions are executed immediately. So what would you generally consider the better approach? Loading all time-consuming operations during startup or when needed?

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• How popular is ITIL in the rest of the world?

  - by Oz123

  I am sorry if this question is not 100% Programming wise, I just didn't know where to ask. Consider yourself lucky if you don't know what ITIL is. You can understand from my tone I don't like it - I find ITIL the complete opposite of how IT Company should work, being too bureaucratic and complicated. In Germany, where I work, it seems to be very popular, and I have been asked in several job interviews if I know ITIL. Do you know popular is it in the rest of the world? Should I worry about ITIL or I can snub it? I must also ask my European colleagues - Why do you think is ITIL so popular? Is there a strong empirical evidence that ITIL does work? By empirical, I mean not personal experiences of the kind "We are a company that is working with ITIL...". I can hardly imagine a multi-million dollar company like Apple or Google work with ITIL, but I can also hardly see how it can benefit small companies...

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