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• Learning about security and finding exploits

  - by Jayraj

  First things first: I have absolutely no interest in learning how to crack systems for personal enrichment, hurting other people or doing anything remotely malicious. I understand the basis of many exploits (XSS, SQL injection, use after free etc.), though I've never performed any myself. I even have some idea about how to guard web applications from common exploits (like the aforementioned XSS and SQL injection) Reading this question about the Internet Explorer zero-day vulnerability from the Security SE piqued my curiosity and made me wonder: how did someone even find out about this exploit? What tools did they use? How did they know what to look for? I'm wary about visiting hacker dens online for fear of getting my own system infected (the Defcon stories make me paranoid). So what's a good, safe place to start learning?

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• How is architectural design done in an agile environment?

  - by B?????

  I have read Principles for the Agile Architect, where they defined next principles : Principle #1 The teams that code the system design the system. Principle #2 Build the simplest architecture that can possibly work. Principle #3 When in doubt, code it out. Principle #4 They build it, they test it. Principle #5 The bigger the system, the longer the runway. Principle #6 System architecture is a role collaboration. Principle #7 There is no monopoly on innovation. The paper says that most of the architecture design is done during the coding phase, and only system design before that. That is fine. So, how is the system design done? Using UML? Or a document that defines interfaces and major blocks? Maybe something else?

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• Git workflow for small teams

  - by janos

  I'm working on a git workflow to implement in a small team. The core ideas in the workflow: there is a shared project master that all team members can write to all development is done exclusively on feature branches feature branches are code reviewed by a team member other than the branch author the feature branch is eventually merged into the shared master and the cycle starts again The article explains the steps in this cycle in detail: https://github.com/janosgyerik/git-workflows-book/blob/small-team-workflow/chapter05.md Does this make sense or am I missing something?

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• Does the use of mongodb enhance extending/changing database driven applications?

  - by developer10214

  When an application is created which need to store data, an SQL database is used very often. So did I in a lot of asp.net applications. The resulting applications have often an ORM like the entity framework and maybe a business layer. So when such an application needs to be extended(let's say you have to add a comment property to an object), you have to change/extend the database, then the ORM and the business layer and so on. To deploy the changes you have to update the target database and the application. I know that things like code first and fluent can make this approach easier. I tried mongodb, I only used the standard driver and I had to extend some objects and all I had to do was changing the code. So it feels that such approaches are much easier to realize when using mongodb. I don't have much experience with larger applications an mongodb. I know that a SQL database or mongodb doesn't fit for all needs and both have their pros and cons. I want to know if my feeling is right, if yes I would choose rather choose mongodb than SQL database.

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• Java Desktop Application For Network users

  - by Motasem Abu Aker

  I'm developing a desktop application using Java. My application will run in a network environment where multiple users will access the same database through the application. There will be basic CRUD opreations (Insert, Update, Delete, & select), which means there will be chances of deadlock, or two users trying to update the same record at same time. I'm using the following Java Swing for Clients (MVC). MySQL Server for database (InnODB). Java Web start. Now, MySQL is centralized on the network, and all of the clients connect to it. The Application for ERP Purpose. I searched the internet to find a very good solution to ensure data integrity & to make sure that when updating one record from one client, other clients are aware of it. I read about Socket-server-client & RESTful web services. I don't want to go web application & don't want to use any extra libraries. So how can I handle this scenario: If User A updates a record: Is there a way to update User B's screen with the new value? If user A starts updating a record, how can I prevent other users from attempting to update the same record?

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• Apple Developer Enterprise Program?

  - by Gnial0id

  I'm building an iOS application for a client (not an enterprise but non-profit association with under than 500 employess), distributed in a free version and a "paid" one. The free version will be available with iTunes/AppStore, no problem with that. But about the paid one... the distribution my client wants is different. They want to distribute it to their clients as a bonus in their subscription, and so, to control this distribution. The first answer would be "iOS Developer Enterprise Program", but it's not an enterprise and have less than 500 employees. Will the fact that my client will distribute the app' with a subscription be a problem ? I spend a lot of time to read documentation, but it is not very clear. I'm a bit lost, I admit it. Any help would grateful.

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• OpenGL CPU vs. GPU

  - by Nitrex88

  So I've always been under the impression that doing work on the GPU is always faster than on the CPU. Because of this, in OpenGL, I usually try to do intensive tasks in shaders so they get the speed boost from the GPU. However, now I'm starting to realize that some things simply work better on the CPU and actually perform worse on the GPU (particularly when a geometry shader is involved). For example, in a recent project I did involving procedurally generated terrain, I tried passing a grid of single triangles into a geometry shader, and tesselated each of these triangles into quads with 400 vertices whose height was determined by a noise function. This worked fine, and looked great, but easily maxed out the GPU with only 25 base triangles and caused a very slow framerate. I then discovered that tesselating on the CPU instead, and setting the height (using noise function) in the vertex shader was actually faster! This prompted me to question the benefits of using the GPU as much as possible... So, I was wondering if someone could describe the general pros and cons of using the GPU vs CPU for intensive graphics tasks. I know this mainly comes down to what your trying to achieve, so if necessary, use the above scenario to discuss why the "CPU + vertex shader" was actually faster than doing everything in the geometry shader on the GPU. It's possible my hardware (newest macbook pro) isn't optomized well for the geometry shader (thus causing the slow framerate). Also, I read that the vertex shader is very good with parallelism, and would love a quick explanation of how this may have played a role in speeding up my procedural terrain. Any info/advice about CPU/GPU/shaders would be awesome!

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• Why does XCode convert PNGs to CgBI format?

  - by Gdeglin

  According to the research done here http://imageoptim.com/tweetbot.html, Xcode's conversion of PNGs to the proprietary Apple CgBI format does not create a noticeable performance improvement. Their claim is that the conversion only reduces PNG loading speed by 1 nanosecond. If this is true, why does apple bother with the CgBI format at all? Has anyone else benchmarked loading CgBI images vs regular PNG images on iOS devices to see if they perform differently?

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• Can SAML use saleforce login information to log into another system inside a view?

  - by steve

  I want my sales people, whom use salesforce every day, to be able to view orders in a ecommerce system through a dashboard view in salesforce. The ecom is built and sitting on my web server but the sales reps dont like to log into too many things in one day so they are not using what I built them. I read recently that salesforce can use SAML but it was unclear as to what you can do with it. What I'd like, is to make a new dash board view that will open up the ecom inside of salesforce. The ecom uses a login system but if it is inside of saleforce would SAML automatically log into the ecom?

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• How To Deal With Terrible Design Decisions

  - by splatto

  I'm a consultant at one company. There is another consultant who is a year older than me and has been here 3 months longer than I have, and a full time developer. The full-time developer is great. My concern is that I see the consultant making absolutely terrible design decisions. For example, M:M relationships are being stored in the database as a comma-delimited string rather than using a conjunction table to hold the relationships. For example, consider two tables, Car and Property: Car records: Camry Volvo Mercedes Property records: Spare Tire Satellite Radio Ipod Support Standard Rather than making a table CarProperties to represent this, he has made a "Property" attribute on the Car table whose data looks like "1,3,7,13,19,25," I hate how this decision and others are affecting the quality of my code. We have butted heads over this design three times in the past two months since I've been here. He asked me why my suggestion was better, and I responded that our database would be eliminating redundant data by converting to a higher normal form. I explained that this design flaw in particular is discussed and discouraged in entry level college programs, and he responded with a shot at me saying that these comma-separated-value database properties are taught when you do your masters (which neither of us have). Needless to say, he became very upset and demanded I apologize for criticizing his work, which I did in the interest of not wanting to be the consultant to create office drama. Our project manager is focused on delivering a product ASAP and is a very strong personality - Suggesting to him at this point that we spend some time to do this right will set him off. There is a strong likelihood that both of our contracts will be extended to work on a second project coming up. How will I be able to exert dominant influence over the design of the system and the data model to ensure that such terrible mistakes are not repeated in the next project? A glimpse at the dynamics: I can be a strong personality if I don't measure myself. The other consultant is not a strong personality, is a poor communicator, is quite stubborn and thinks he is better than everyone else. The project manager is an extremely strong personality who is focused on releasing tomorrow's product yesterday. The full-time developer is very laid back and easy going, a very effective communicator, but is someone who will accept bad design if it means not rocking the boat. Code reviews or anything else that takes "time" will be out of the question - there is no way our PM will be sold on such a thing by anybody.

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• Dynamic vs Statically typed languages for websites

  - by Bradford

  Wanted to hear what others thought about this statement: I’ll contrast that with building a website. When rendering web pages, often you have very many components interacting on a web page. You have buttons over here and little widgets over there and there are dozens of them on a webpage, as well as possibly dozens or hundreds of web pages on your website that are all dynamic. With a system with a really large surface area like that, using a statically typed language is actually quite inflexible. I would find it painful probably to program in Scala and render a web page with it, when I want to interactively push around buttons and what-not. If the whole system has to be coherent, like the whole system has to type check just to be able to move a button around, I think that can be really inflexible. Source: http://www.infoq.com/interviews/kallen-scala-twitter

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• Why not expose a primary key

  - by Angelo Neuschitzer

  In my education I have been told that it is a flawed idea to expose actual primary keys (not only DB keys, but all primary accessors) to the user. I always thought it to be a security problem (because an attacker could attempt to read stuff not their own). Now I have to check if the user is allowed to access anyway, so is there a different reason behind it? Also, as my users have to access the data anyway I will need to have a public key for the outside world somewhere in between. Now that public key has the same problems as the primary key, doesn't it?

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• Why isn't the source code of programs shown in research papers released?

  - by Antoine

  Is there a reason why the source code of programs shown in research papers are not released ? I understand that research papers are more about the general idea of accomplishing something than implementation details, but I don't get why they don't release the code. For example, in this paper ends with: Results The human line drawing system is implemented through the Qt framework in C++ using OpenGL, and runs on a 2.00 GHz Intel dual core processor workstation without any additional hardware assistance. We can interactively draw lines while the system synthesizes the new path and texture. Do they keep the source code closed intentionally because of a monetization they intend to make with it, or because of copyright ?

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• Learning and Developing with PHP [closed]

  - by KyelJmD

  I am here to ask you What is a good PHP Book that doesn't contain too much details but it is compose of all necessary information to develop in PHP such as (OO PHP, Handling Forms, Database etc etc) This may be subjective but I've tried to look php book recomendations here at Stackoverflow but I cannot find any. Next is What are the things I need to know in learning a PHp framework? specifically I want to learn CAKEPHP. NOTE I do not need those lenghty books that discuss loops and such I already have experience programming with java and C#.

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• JEE frameworks, a road map to learn? and should I learn them?

  - by vibhor

  Background Information I have been into programming since past 1 years professionally, my day to day work includes writing BIRT reports, designing and validating forms using JEE (struts/spring, hibernate). I don't have a comp Sci 4 year degree (Electronics), so I have very Limited experience in comp Sci. Question JEE frameworks (struts1/2, spring, hibernate etc) are hot nowadays, however java world have a tendency of building A4j, B4J... mayway4J kind of stuff (and I am tired of it). AFAIK, frameworks are nothing but bunch of XML config files and hundreds of classes built to cram (by developer). And sooner then later a new framework come into picture that says I am the best among all. So My Question is - 1.What will you do to learn a framework (many frameworks) considering that it can be obsolete till you'll be master in it (Learning frameworks can take significant amount of time)? 2.Considering early into your career, will you give a damn that how well someone knows framework (knowing frame work is important but still..) and why/how should I learn a framework knowing I have to (un)learn it in order to learn other one (plenty of of 4Js....)? I am just trying to get a big picture, that, if you're in place of me, what would be your learning/cramming strategy (Road map)? I am not intended to start a holy war between A versus B, (frameworks are more or less essential).

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• Programming Geek's CV Design

  - by benhowdle89

  What is the best practice or advice for a programmer's CV? If I were a graphic designer or more of a web designer as opposed to a programmer, then I'd imagine a CV would have a bit more flourish to it. Yet as a programmer, aren't we judged on not only efficiency and results but also creativity, imagination and initiative? Should this be reflected in a CV? Or is it all about the information, no wishy washy designs in sight? Has anyone experimented with an original alternative to a PDF CV with a template from MS Word or Mac Pages?

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• How should I pronounce the :: and -> in PHP?

  - by Renesis

  When I read these lines aloud to someone: $controller->process(); UserManager::getInstance(); How should the -> and :: be pronounced? Reading the characters themselves in cumbersome and I don't know of any nicknames for them. Being a developer who is used to C-style syntax, I'd like to say "dot", but I'd like something that is easy to say and people can easily understand. It would also be good to know if there are any pronunciations that have become de-facto standards among teams of developers.

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• Switch vs Polymorphism when dealing with model and view

  - by Raphael Oliveira

  I can't figure out a better solution to my problem. I have a view controller that presents a list of elements. Those elements are models that can be an instance of B, C, D, etc and inherit from A. So in that view controller, each item should go to a different screen of the application and pass some data when the user select one of them. The two alternatives that comes to my mind are (please ignore the syntax, it is not a specific language) 1) switch (I know that sucks) //inside the view controller void onClickItem(int index) { A a = items.get(index); switch(a.type) { case b: B b = (B)a; go to screen X; x.v1 = b.v1; // fill X with b data x.v2 = b.v2; case c: go to screen Y; etc... } } 2) polymorphism //inside the view controller void onClickItem(int index) { A a = items.get(index); Screen s = new (a.getDestinationScreen()); //ignore the syntax s.v1 = a.v1; // fill s with information about A s.v2 = a.v2; show(s); } //inside B Class getDestinationScreen(void) { return Class(X); } //inside C Class getDestinationScreen(void) { return Class(Y); } My problem with solution 2 is that since B, C, D, etc are models, they shouldn't know about view related stuff. Or should they in that case?

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• How does eMail encryption work?

  - by Dummy Derp

  I have been going over YouTube watching videos on eMail encryption and everyone seems to explain it from a different perspective. Some do it for a CompTIA exam while others just provide a primer. Here is what I understood: Step1: You compose an email that you want to send. Without encryption, it will be simple ASCII text that will be visible to anyone along the way. Step2: You generate a digital signature to make sure that nobody gets to re-transmit your email and claim it was you. Digital Signature is generated using Sender's private key which is usually a hash of the password and is then combined with the original message to form one long hash string. These signatures are one-time-use-only and a new one is calculated for every email. Step 3: You encrypt the compose of your email using Receiver's public key so that the only person who can read it is the intended receiver using their private key Step 4: When you hit the send the email, what is transmitted now is gibberish to everyone apart from the intended receiver who will decrypt is using their private key And there are various ways to do it like PEM, PGP, etc. Correct me where I am wrong or refine where necessary.

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• How do you update copyright notices?

  - by James

  So now it's 2011, and as I carry on coding on our active projects it's time to update some copyright notices. eg. Copyright Widgets Ltd 2010 to Copyright Widgets Ltd 2010, 2011 My question is when do you update the copyright notices? Do you change the notice in the head of a file the first time you work on that file? Since a module is one piece of code consisting of many files that work together, do you update all notices in that module when you change a single file in that module? Since a program is one piece of code (maybe consisting of many modules), do you update all notices in that program when you change a single file in that program? Or do you just go through and change en-mass over your morning coffee on the grounds your about to start programming and updateing things?

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• How would you practice concurrency and multi-threading?

  - by Xavier Nodet

  I've been reading about concurrency, multi-threading, and how "the free lunch is over". But I've not yet had the possibility to use MT in my job. I'm thus looking for suggestions about what I could do to get some practice of CPU heavy MT through exercises or participation in some open-source projects. Thanks. Edit: I'm more interested in open-source projects that use MT for CPU-bound tasks, or simply algorithms that are interesting to implement using MT, rather than books or papers about the tools like threads, mutexes and locks...

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• Annual Review: what hard data should a developer bring?

  - by sunpech

  Many companies have annual reviews for their employees. I've heard that it's generally a good idea to muster up some hard data to analyze and bring to the review. The better the data, the better the chances to help support a promotion or raise. What I mean by hard data, are tangible numbers-- something that can be measured and/or calculated. Obviously data that a developer would have access to. Something intangible would be how beautiful the code a developer has written. I think this would be very hard to measure, nor would upper management care for it. My question is: For a software developer, what kind of hard data should be analyzed and brought to a review to help highlight good work that was done? An example I've been given in the past: The support tickets produced by each project a developer was involved in. Are the numbers low? Are the rate per month getting lower? Etc.

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• HTML5 or Native Android/iOS application?

  - by Dimitris

  I would like to hear your opinion on this debate. I want to build a mobile application which will interact with a server and I was wondering what's the best way to do it. Build the entire application using the HTML5 technology and then just create native "browsing" apps for Android/iOS or to build the Android/iOS apps from scratch? Using the HTML5 will save considerable amounts of time but I don't know if the result will be equally good in both platforms. Building native apps will take much more time but the result will be definitely good. What do you think?

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• Can we set up svn server on a local computer without any network access?

  - by Aitezaz Abdullah

  I want to set up an SVN repository on my computer without any network access. I am working on a code without any collaborator, so I don't want it to be publicly available. I read the following post. http://stackoverflow.com/questions/6001445/local-source-control-repository-cross-platform but this post suggests using online svn repository services that give free repositories. In that case, my code will be publicly available (as is included in the terms of free plans). So I was wondering if I can set up a local server on my windows xp machine that only I access even when I don't have any internet connection?

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• What do you call "X <= $foo <= Y" comparison?

  - by Jakob

  While writing a Perl statement like if ( $foo >= X && $foo <= Y ) yet again, I wondered why many programming languages do not support the more comfortable form if ( X <= $foo <= Y ) and what this is called. I came up with "3-legged comparison" but no results when searching for it. By the way there is also the "element-of-set" form if ( $foo in X..Y ) which I only consider more readable when provided via a short keyword. Is there a term for X <= $foo <= Y comparison? Which languages support it?

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