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• Not able to add html tags through jquery in django [closed]

  - by user1665581

  I am trying to add html tags dynamically through jquery in django. $("#div1").append("<h3> Hey !! </h3>"); $("#div1").append("<br/>"); But they are not working. However normal text is getting appended properly like $("#div1").append("Hey i am here"); I even noticed that some of the tags wern't working outside script like <br> so i had to replace it with <br/> also had to apply closing tag for input and also &nbsp is not working. what is wrong???

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• Stack Trace Logger [migrated]

  - by Chris Okyen

  I need to write a parent Java class that classes using recursion can extend. The parent class will be be able to realize whenever the call stack changes ( you enter a method, temporarily leave it to go to another method call, or you are are finsihed with the method ) and then print it out. I want it to print on the console, but clear the console as well every time so it shows the stack horizantaly so you can see the height of each stack to see what popped off and what popped on... Also print out if a baseline was reached for recursive functions. First. How can I using the StackTraceElements and Thread classes to detect automatically whenever the stack has popped or pushed an element on without calling it manually? Second, how would I do the clearing thing? For instance , if I had the code: public class recursion(int i) { private static void recursion(int i) { if( i < 10) System.out.println('A'); else { recursion(i / 10 ); System.out.println('B'); } } public static void main(String[] argv) { recursion(102); } } It would need to print out the stack when entering main(), when entering recursion(102) from main(), when it enters recursion(102 / 10), which is recursion(10), from recursion(102), when it enters recursion(10 / 10), which is recursion(1) from recursion(10). Print out a message out when it reaches the baseline recursion(1).. then print out the stacks of reversed revisitation of function recursion(10), recursion(102) and main(). finally print out we are exiting main().

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• First ASP.NET WebForms application completed, should I jump into MVC now?

  - by farhad

  I just finished my first Asp.net intranet application using WebForms, and now I am considering learning MVC. My questions are: I mainly use LINQ for CRUD purposes instead of SQL, should I also learn hard coded SQL or just stick to LINQ EF? Is it a good idea to start learning MVC now and use it on all my future projects or is it too early for me? Do employers favour MVC over WebForms when recruiting junior developers?

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• Are Language Comparisons Meaningful?

  - by Prasoon Saurav

  Dr Bjarne Stroustrup in his book D&E says Several reviewers asked me to compare C++ to other languages. This I have decided against doing. Thereby, I have reaffirmed a long-standing and strongly held view: "Language comparisons are rarely meaningful and even less often fair" . A good comparison of major programming languages requires more effort than most people are willing to spend, experience in a wide range of application areas, a rigid maintenance of a detached and impartial point of view, and a sense of fairness. I do not have the time, and as the designer of C++, my impartiality would never be fully credible. -- The Design and Evolution of C++(Bjarne Stroustrup) Do you people agree with his this statement "Language comparisons are rarely meaningful and even less often fair"? Personally I think that comparing a language X with Y makes sense because it gives many more reasons to love/despise X/Y :-P What do you people think?

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• Java or Python for internet application?

  - by jpartogi

  In choosing a technology for internet applications where the number of users may scale over time, which one should we consider: Java or Python? What are the considerations in choosing one and not the other? If speed and scalability is our main criteria, which one should we use? We have looked around and it seems that there are more websites that use Python [i.e : Quora, digg, reddit, bitbucket and disqus] than Java. Based on that, can we say that Python is more suitable for internet applications where speed and scalability is the main criteria? However we have browsed around and found some comments saying that Java is actually faster than Python. Thank you for your insights.

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• Fastest way to document software architecture and design

  - by Karsten

  We are a small team of 5 developers and I'm looking for some great advices about how to document the software architecture and design. I'm going for the sweet spot, where the time invested pays off. I don't want to use more time documenting than necessary. I'll quickly give you my thoughts. What are the diagrams I should made? I'm thinking an overall diagram showing the various applications and services. And then some sequence diagrams showing the most important or complicated processes. About the code it self, I really don't see much value in describing or making diagrams for the code outside the .cs files them self. About text documents, I'm a bit uncertain about when to put down on paper. Most developers don't like to either write or read long documents.

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• Annotate source code with diagrams as comments

  - by Steven Lu

  I write a lot of (primarily c++ and javascript) code that touches upon computational geometry and graphics and those kinds of topics, so I have found that visual diagrams have been an indispensable part of the process of solving problems. I have determined just now that "oh, wouldn't it just be fantastic if I could somehow attach a hand-drawn diagram to a piece of code as a comment", and this would allow me to come back to something I worked on, days, weeks, months earlier and far more quickly re-grok my algorithms. As a visual learner, I feel like this has the potential to improve my productivity with almost every type of programming because simple diagrams can help with understanding and reasoning about any type of non-trivial data structure. Graphs for example. During graph theory class at university I had only ever been able to truly comprehend the graph relationships that I could actually draw diagrammatical representations of. So... No IDE to my knowledge lets you save a picture as a comment to code. My thinking was that I or someone else could come up with some reasonably easy-to-use tool that can convert an image into a base64 binary string which I can then insert into my code. If the conversion/insertion process can be streamlined enough it would allow a far better connection between the diagram and the actual code, so I no longer need to chronographically search through my notebooks. Even more awesome: plugins for the IDEs to automatically parse out and display the image. There is absolutely nothing difficult about this from a theoretical point of view. My guess is that it would take some extra time for me to actually figure out how to extend my favorite IDEs and maintain these plugins, so I'd be totally happy with a sort of code post-processor which would do the same parsing out and rendering of the images and show them side by side with the code, inside of a browser or something. Since I'm a javascript programmer by trade. What do people think? Would anyone pay for this? I would.

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• PHP MVC error handling, view display and user permissions

  - by cen

  I am building a moderation panel from scratch in a MVC approach and a lot of questions cropped up during development. I would like to hear from others how they handle these situations. Error handling Should you handle an error inside the class method or should the method return something anyway and you handle the error in controller? What about PDO exceptions, how to handle them? For example, let's say we have a method that returns true if the user exists in a table and false if he does not exist. What do you return in the catch statement? You can't just return false because then the controller assumes that everything is alright while the truth is that something must be seriously broken. Displaying the error from the method completely breaks the whole design. Maybe a page redirect inside the method? The proper way to show a view The controller right now looks something like this: include('view/header.php'); if ($_GET['m']=='something') include('view/something.php'); elseif ($_GET['m']=='somethingelse') include('view/somethingelse.php'); include('view/foter.php'); Each view also checks if it was included from the index page to prevent it being accessed directly. There is a view file for each different document body. Is this way of including different views ok or is there a more proper way? Managing user rights Each user has his own rights, what he can see and what he can do. Which part of the system should verify that user has the permission to see the view, controller or view itself? Right now I do permission checks directly in the view because each view can contain several forms that require different permissions and I would need to make a seperate file for each of them if it was put in the controller. I also have to re-check for the permissions everytime a form is submitted because form data can be easily forged. The truth is, all this permission checking and validating the inputs just turns the controller into a huge if/then/else cluster. I feel like 90% of the time I am doing error checks/permissions/validations and very little of the actual logic. Is this normal even for popular frameworks?

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• Why are some seasoned ASP.NET developers defecting to Ruby on Rails?

  - by Tony_Henrich

  Once a while I hear some known ASP.NET developer declaring that they quit developing in .NET and moving to Ruby using Ruby in Rails. The problem is they don't mention exactly the reasons. They use words like RoR is 'easier', 'better' & 'faster'. That really doesn't say much to me. Anyone care to do faithful comparison using code samples, case studies ..etc or from personal experience in using both? Try to convince me to throw away all my years of learning C#, the .NET Framework using a powerful IDE (Visual Studio). Does RoR save you hours a week in development time? What are the major pain points in .NET that compels one to move away from it? This question is NOT about a pure RoR vs ASP.NET (MVC) comparison. It's about the compelling technical reasons (getting bored does not count!) to switch over after using a platform for several years and start with a new language and platform. (prefer this to be a wiki)

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• Scrum and Google Docs burndown chart

  - by Michal Minicki

  There is a tutorial on how to create a burndown chart for Scrum in the Google Docs application: http://www.scrumology.net/2011/05/03/how-to-create-a-burndown-chart-in-google-docs/ The problem I see with it though is, it has only a place to update progress once per sprint but the burndown is supposed to be updated with daily progress, right? How can one modify this chart to be able to put daily progress on it?

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• Recommended requirements when outsourcing xhtml/css site building?

  - by András Szepesházi

  I'm considering outsourcing a part of our web application development project for freelancers, namely the site building part. What I mean by site building is the process of creating the xhtml/css template files, with dummy content, from a psd file (or any other graphical layout file). The resulting xhtml/css files will be used by our developers as templates for cms based page rendering. The cms in this case is Drupal, but that might not be of much relevance. I'm looking for a good set of requirements, that will result in good quality xhtml/css code, complying with today's standards leaves little to the freelancer developer's imagination in terms of what I need I'm thinking about requirements like: Valid XHTML 1.0 Transitional document type, validated by validator.w3.org Identical rendering in all modern browsers (FF, Chrome, Safari, Opera, IE7-8) and also in IE6 All opening and closing block-level elements should be properly commented, referencing the functional part of the user interface they belong to (menu, toolbar, content, etc) No inline CSS definitions And so on. How would you organize a list like that? What requirements would you add?

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• What kind of specific projects can I do to master bitwise operations in C++? Also is there a canonical book? [closed]

  - by Ford

  I don't use C++ or bitwise operations at my current job but I'm thinking of applying to companies where it is a requirement to be fluent with them (on their tests anyway). So my question is: Can anyone suggest a project which will require gaining a fluency in bitwise operations to complete? On a side note, is there a canonical book on optimization techniques using bitwise operations since that seems to be an important use of them?

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• Web Developer or Software Engineer?

  - by dahacker89

  A question that I have been asking myself and really confused which path to take. So I need your guys help as to the pros and cons of these 2 professions in today's world. I love web applications development as the Web is the best thing to happen in this age and nearly everyone gets by on the World Wide Web. And also tend to keep learning about new technologies and about web services. On the other hand I like software engineering also for the desktop applications as I have had experience with development small scale softwares in VB.Net, Java, C++, etc. Which path has more scope and better future? Whats your view?

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• Separation of development responsibilities in a new project

  - by dreza

  We have very recently started a new project (MVC 3.0) and some of our early discussion has been around how the work and development will be split amongst the team members to ensure we get the least amount of overlap of work and so help make it a bit easier for each developer to get on and do their work. The project is expected to take about 6 months - 1 year (although not all developers are likely to be on and might filter off towards the end), Our team is going to be small so this will help out a bit I believe. The team will essentially consist of: 3 x developers (All different levels i.e. more senior, intermediate and junior) 1 x project manager / product owner / tester An external company responsbile for doing our design work General project/development decisions so far have included: Develop in an Agile way using SCRUM techniques (We are still very much learning this approach as a company) Use MVVM archectecture Use Ninject and DI where possible Attempt to use as TDD as much as possible to drive development. Keep our controllers as skinny as possible Keep our views as simple as possible During our discussions two approaches have been broached as too how to seperate the workload given our objectives outlined above. OPTION 1: A framework seperation where each person is responsible for conceptual areas with overlap and discussion primarily in the integration areas. The integration areas would the responsibily of both developers as required. View prototypes (**Graphic designer**) | - Mockups | Views (Razor and view helpers etc) & Javascript (**Developer 1**) | - View models (Integration point) | Controllers and Application logic (**Developer 2**) | - Models (Integration point) | Domain model and persistence (**Developer 3**) OPTION 2: A more task orientated approach where each person is responsible for the completion of the entire task (story) from view - controller - model. QUESTION: For those who have worked in small teams developing MVC projects how have you managed the workload distribution in this situation. I can't imagine the junior would be responsible for building parts of the underlying architecture so would given them responsibility for the view make sense considering we are trying to keep it simple?

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• Defensive Programming Techniques.

  - by Pemdas

  I was attempting to identify an element of software engineering that I think is overlooked, not emphasized or not taught in typical undergraduate course work for CS or SE. What I came up is the concept of defensive programing. I would like to hear the communities options on defensive program and/or specific techniques that you use on a regular basis. Also, I would to know if there are any language specific techniques.

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• Correct term for PSD to HTML to CMS

  - by John Magnolia

  Hi, I have heard a lot of different terms to describe the process of turning a website design into a editable CMS. Currently I take the design and "slice" this up into HTML and CSS then I "plug" this into a CMS. I would class this as frontend development depending on the level of customisation required for the CMS. The reason I ask is I am currently writing up my CV and have become stuck on the correct term for this. Kind Regards

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• Which PHP framework is best for Facebook app?

  - by ohho

  I am new on Facebook app. The majority of Facebook sample apps are in PHP. Is there a PHP framework which integrates with Facebook (Graph) API you'd recommend? I am looking for features listed below and don't want to reinvent the wheels: link a Facebook user id to a local user profile database detect whether user has liked the app detect whether user has granted access the app write on user's wall (status/photo) Thanks!

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• force recompilation of war file including its Jar dependencies

  - by Mik378

  I have a project A (a webapp), depending on project B (B.jar) and this one depending on project C (C.jar). I would like to create a maven goal named "Rebuild War", that clean all compiled code for these 3 projects and rebuild the whole in order to obtain a fresh War file. I tried mvn clean package on project A, but I noticed that B and C are not recompiled. Indeed, B.jar and C.jar that are contained in local repository don't have a changing creation date. Is there an adapted maven command for this requirement ?

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• How can we protect the namespace of an object in Javascript?

  - by Eduard Florinescu

  Continuing from my previous question: Javascript simple code to understand prototype-based OOP basics Let's say we run into console this two separate objects(even if they are called child and parent there is no inheritance between them): var parent = { name: "parent", print: function(){ console.log("Hello, "+this.name); } }; var child = { name: "child", print: function(){ console.log("Hi, "+this.name); } }; parent.print() // This will print: Hello, parent child.print() // This will print: Hi, child temp =parent; parent = child; child = temp; parent.print() // This will now print: Hi, child child.print() // This will now print: Hello, parent Now suppose that parent is a library, as a HTML5 application in a browser this cannot do much harm because is practically running sandboxed, but now with the advent of the ChromeOS, FirefoxOS and other [Browser] OS they will also be linked to a native API, that would be a head out of the „sandbox”. Now if someone changes the namespace it would be harder for a code reviewer (either automated or not ) to spot an incorrect use if the namespaces changes. My question would be: Are there many ways in which the above situation can be done and what can be done to protect this namespaces? (Either in the javascript itself or by some static code analysis tool)

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• Is it a "pattern smell" to put getters like "FullName" or "FormattedPhoneNumber" in your model?

  - by DanM

  I'm working on an ASP.NET MVC app, and I've been getting into the habit of putting what seem like helpful and convenient getters into my model/entity classes. For example: public class Member { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string PhoneNumber { get; set; } public string FullName { get { return FirstName + " " + LastName; } } public string FormattedPhoneNumber { get { return "(" + PhoneNumber.Substring(0, 3) + ") " + PhoneNumber.Substring(3, 3) + "-" + PhoneNumber.Substring(6); } } } I'm wondering people think about the FullName and FormattedPhoneNumber getters. They make it very easy to create standardized data formats throughout the app, and they seem to save a lot of repeated code, but it could definitely be argued that data format is something that should be handled in mapping from model to view-model. In fact, I was originally applying these data formats in my service layer where I do my mapping, but it was becoming a burden to constantly have to write formatters then apply them in many different places. E.g., I use "Full Name" in most views, and having to type something like model.FullName = MappingUtilities.GetFullName(entity.FirstName, entity.LastName); all over the place seemed a lot less elegant than just typing model.FullName = entity.FullName (or, if you use something like AutoMapper, potentially not typing anything at all). So, where do you draw the line when it comes to data formatting. Is it "okay" to do data formatting in your model or is that a "pattern smell"? Note: I definitely do not have any html in my model. I use html helpers for that. I'm strictly talking about formatting or combining data (and especially data that is frequently used).

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• How to render a terrain using height maps and getting basic collision detection on top of the terrain and camera (moving on the terrain)

  - by M1kstur

  I have loaded a .RAW file into a 2x2 array in my class. The way I am rendering it works fine but I am struggling to get the camera to move on top of the terrain. The terrain renders from 0,0,0 (x,y,z) as that is where I put my camera. My camera class allows to the "camera" to move through the scene. I want to be able to "walk" on top of the terrain with some basic collision detection (if possible). Any tips on where to go for this or any tips?

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• Single database, multiple system dependency

  - by davenewza

  Consider an environment where we have a single, core database, with many separate systems using this one database. This leads to all of these systems have a common dependency, which ultimately introduces coupling between them. This means that we cannot always evolve systems independently of each other. Structural changes to the database (even if only intended for one, particular system), requires a full sweep test of ALL systems, and may require that other systems be 'patched' and subsequently released. This is especially tricky when you want to have separate teams working on different projects. What is a good 'pattern' to help in avoiding such coupling? I would imagine that a database should be exclusively depended on by one system. If other systems require data for whatever reason, they should request such from an API service of some kind. A drawback of this approach which comes to mind is performance: routing data between high-throughput systems through service calls is much slower than through a database connection.

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• Windows Phone 8 development on Windows 7 - is it or will be possible?

  - by Tiby

  I was trying to install Windows Phone 8 SDK on my Windows 7 machine and it hit me with the 'supported only on Windows 8' message. I actually wanted to develop Phone 7.5 apps on Visual Studio 2012, impossible thing with the 7.1 SDK, so I thought 8 SDK will do the job. As if it was not enough that the 8 SDK was controversial upon release, now that it's generally available, to me it seems like a horrible decision to make it available only for Windows 8, because in my humble opinion, no serious and sane developer will install Windows 8 ever, or at least in the near future, just because of the Metro UI. So, anyone knows any workarounds for developing Windows Phone 8 on Windows 7, or at least develop for 7.5 but using Visual Studio 2012?

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• Is an undergraduate degree in CS required?

  - by Girish

  I will complete my undergrad in Material Science this spring. I am not interested in the subject but I am very interested in Computer Science and programming and have decided to make the shift. Do you think I should first get an undergraduate degree in Computer Science or should I apply for a master's program? My programming skills are pretty decent, but I lack a lot of concrete knowledge in algorithms and data structures? Will a master's degree help me with the basics?

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• Avoid GPL violation by moving library out of process

  - by Andrey

  Assume there is a library that is licensed under GPL. I want to use it is closed source project. I do following: Create small wrapper application around that GPL library that listens to socket, parse messages and call GPL library. Then returns results back. Release it's sources (to comply with GPL) Create client for this wrapper in my main application and don't release sources. I know that this adds huge overhead compared to static/dynamic linking, but I am interested in theoretical way.

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