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• What is the difference between CSDA and CSDP?

  - by Philip C

  This question is in reference to the IEEE's CSDA and CSDP certifications. I've already taken the CSDA course, which covered all of the knowledge areas in the Software Engineering Body of Knowledge (SWEBOK). I'm thinking about doing the CSDP certification as well, but I can't find anywhere that tells me how it differs from the CSDA. I know that it's aimed more at professionals rather than recent graduates, and I'd imagine that it covers the same areas as the CSDA, but in greater detail. Unfortunately I can't find much evidence to back that up. This is making it difficult to justify to my boss that he should spend several hundred pounds of the group's training budget on it. So the question is: What does the CSDP offer that the CSDA doesn't?

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• Arguments to homologate Firefox in a Company

  - by Vegetus

  I developed a web project for my company and this project was designed to use Mozilla Firefox (including the javascript (jQuery)). However, now the company wants the project to be transferred to Internet Explorer. I know that in Google, there are several explanations about Mozilla Firefox, which I can demonstrate to the company. But is there any link showing that Internet Explorer runs the W3C standards and has several justifications for why using Mozilla Firefox? I searched on youtube and slideshare, but both have a very weak argument for me to select them and show to the company. The company where I work is still very naive to keep Internet Explorer. 1) The project is intranet. Only 400 internal employees can access the web. 2) The company argues that Mozilla Firefox is not approved by the company. Any suggestions? Any link which shows that the developers of the world hate Internet Explorer? A link explaining why developers do not like Internet Explorer? After the answers, I'm thinking of making a great slide with all the necessary arguments to the company homologue firefox. And yet, published in slideshare. EDIT: Someone here must be wondering why I have not designed, also for Internet Explorer. Welllll... As the deadline for project completion is always short, I developed the project focused only on Mozilla Firefox, because the browser Mozilla Firefox most respects W3C standards (and javascript too) than Internet Explorer.

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• Lightweight PHP/HTML/CSS editor with code browser

  - by Nisto

  I'm looking for a freeware editor which has; syntax highlighting and a code browser (or code suggestions/hints). Preferably freeware license! I've tried out quite a few editors, but a lot of them are unfortunately very resource heavy and provides a lot more functions than I ever needed. So far, there's two editors that I really like, and is lightweight: jEdit and Notepad++. Although, unfortunately... Notepad++ doesn't have code browser support for both control structures and functions for PHP. Also, there's no code browser for HTML... I really liked jEdit as well, but there doesn't seem to be a code browser for it. Except for maybe Completion, but it's a bothersome plugin, and doesn't show the code browser unless you type something in and press CTRL+B. Other editors I've tried, but wasn't satisfied with: Adobe Dreamweaver CodeLobster PHP Edition Aptana Studio Komodo Edit EditPlus BlueFish PHP Designer 2007 - Personal PhpStorm Scriptly Eclipse UltraEdit Notepad2 EditPad Pro Rapid PHP EDIT I'm using Windows XP

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• Objective C style nil in java?

  - by Usman Ismail

  Objective C has a concept of a nil object which would accept any method call with any parameters without complaining and silently return another nil. I have used something similar in Java using easymock and mockito for testing. Is there something similar for main line code? Is it even a good idea to have something like this? One use-case where I am considering using it is with optional metrics. We have codahale metrics counters on which we call mark() every time an event is generated. This is surrounded by an If/then to check for metrics enabled flag. I could just use a nil object as counter and silently accept the mark call if metrics are not enabled.

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• Reverse subarray of an array with O(1)

  - by Babibu

  I have an idea how to implement sub array reverse with O(1), not including precalculation such as reading the input. I will have many reverse operations, and I can't use the trivial solution of O(N). Edit: To be more clear I want to build data structure behind the array with access layer that knows about reversing requests and inverts the indexing logic as necessary when someone wants to iterate over the array. Edit 2: The data structure will only be used for iterations I been reading this and this and even this questions but they aren't helping. There are 3 cases that need to be taking care of: Regular reverse operation Reverse that including reversed area Intersection between reverse and part of other reversed area in the array Here is my implementation for the first two parts, I will need your help with the last one. This is the rule class: class Rule { public int startingIndex; public int weight; } It is used in my basic data structure City: public class City { Rule rule; private static AtomicInteger _counter = new AtomicInteger(-1); public final int id = _counter.incrementAndGet(); @Override public String toString() { return "" + id; } } This is the main class: public class CitiesList implements Iterable<City>, Iterator<City> { private int position; private int direction = 1; private ArrayList<City> cities; private ArrayDeque<City> citiesQeque = new ArrayDeque<>(); private LinkedList<Rule> rulesQeque = new LinkedList<>(); public void init(ArrayList<City> cities) { this.cities = cities; } public void swap(int index1, int index2){ Rule rule = new Rule(); rule.weight = Math.abs(index2 - index1); cities.get(index1).rule = rule; cities.get(index2 + 1).rule = rule; } @Override public void remove() { throw new IllegalStateException("Not implemented"); } @Override public City next() { City city = cities.get(position); if (citiesQeque.peek() == city){ citiesQeque.pop(); changeDirection(); position += (city.rule.weight + 1) * direction; city = cities.get(position); } if(city.rule != null){ if(city.rule != rulesQeque.peekLast()){ rulesQeque.add(city.rule); position += city.rule.weight * direction; changeDirection(); citiesQeque.push(city); } else{ rulesQeque.removeLast(); position += direction; } } else{ position += direction; } return city; } private void changeDirection() { direction *= -1; } @Override public boolean hasNext() { return position < cities.size(); } @Override public Iterator<City> iterator() { position = 0; return this; } } And here is a sample program: public static void main(String[] args) { ArrayList<City> list = new ArrayList<>(); for(int i = 0 ; i < 20; i++){ list.add(new City()); } CitiesList citiesList = new CitiesList(); citiesList.init(list); for (City city : citiesList) { System.out.print(city + " "); } System.out.println("\n******************"); citiesList.swap(4, 8); for (City city : citiesList) { System.out.print(city + " "); } System.out.println("\n******************"); citiesList.swap(2, 15); for (City city : citiesList) { System.out.print(city + " "); } } How do I handle reverse intersections?

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• Do I need to match hardware on a Mac to my PC to get the same user experience?

  - by Darth

  I've been playing around with the thought of moving from a PC to a Mac. if you don't want to read this, skip to the "upgrade options" My current setup Most of my time I spent moving back and forth between Linux and Windows. During the last upgrade to Vista, I got myself pc with Core 2 Quad, 8GB of RAM and GeForce 9800GTX+. Currently I'm running dual boot between Ubuntu 10.04 and Windows Vista x64. Most of my work, around 80%, I can do on Ubuntu, which is mostly Ruby/Java programming. If that was all I needed, Ubuntu would be really great. However, I also do quite a lot of Photography and Design, which forces me to use Adobe software (not only Photoshop). I also work with Wacom Intuos4 tablet, which doesn't really have great support on Linux machines. I've tried virtualization both ways (Linux in Win and Win in Linux), but neither was anywhere near satisfying. These are those of many many reasons I want to move to OS X. Upgrade options This is how I see my upgrade options: Mac Mini - cheapest solution, but worst performance iMac - more expensive, better performing with second LCD for free Mac Pro - could match my current PC performance, currently outside of the price range When I compare the Mac hardware vs my current PC, it will be always worse, unless I decide to pump in a lot of money. The question that comes to my head, do I need to match my current PC hardware to get the same user experience with a Mac? If I look at it from the Vista point of view, 2GB RAM is as low as it gets, 4GB is usable ... and the 8GB runs very smoothly. PC HW != Mac HW? If I bought the Mac Mini for roughly the same price I paid for my PC (Core 2 Quad with 8GB RAM), I'd get Core 2 Duo with 4GB RAM. But I don't want to run Vista on it, so I can't compare the hardware directly. Say that I want to do the same things on the Mac Mini as I do on my PC, eg. open up 50 tabs in Google Chrome and start working with a large PSD in Photoshop (couple hundred MB), would running on Mac OS X compensate for the lower hardware performance? My point is, that if I'm about to upgrade, I wouldn't like to upgrade to hardware that runs a lot slower. Good analogy for this is Vista vs Ubuntu, where you can run Ubuntu smoothly on a low end laptop, but in Vista, you'd be happy to open a browser. Does the same principle apply to OS X?

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• Storing large data in HTTP Session (Java Application)

  - by Umesh Awasthi

  I am asking this question in continuation with http-session-or-database-approach. I am planning to follow this approach. When user add product to cart, create a Cart Model, add items to cart and save to DB. Convert Cart model to cart data and save it to HTTP session. Any update/ edit update underlying cart in DB and update data snap shot in Session. When user click on view cart page, just pick cart data from Session and display to customer. I have following queries regarding HTTP Session How good is it to store large data (Shopping Cart) in Session? How scalable this approach can be ? (With respect to Session) Won't my application going to eat and demand a lot of memory? Is my approach is fine or do i need to consider other points while designing this? Though, we can control what all cart data should be stored in the Session, but still we need to have certain information in cart data being stored in session?

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• Which operating systems book is good as a quick refresher?

  - by rdasxy

  I am preparing for a technical interview and need to review the basics of major operating systems concepts. We used Tanenbaum's Modern Operating Systems in school for our operating systems course, which is a good book, but too long to be reviewed in the course of a few days. For an example, I am looking for what Programming Interviews Exposed is to Weiss's Data Structures & Algorithm Analysis. Any suggestions?

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• Should I be worried about overengineering programming assignments given during interview process?

  - by DormoTheNord

  I recently had a phone interview with a company. After that phone interview, I was told to complete a short programming assignment (a small program; shouldn't take more than three hours). I'm only directly instructed to complete the assignment and turn in the code. I was given complete freedom to use any language I wished and was not told exactly how to turn in the code. Immediately I planned on throwing it on Github, writing a test suite for it, using Travis-CI (free continuous integration for public Github repositories) to run the test suites, and using CMake to build the Linux makefiles for Travis-CI. That way, not only can I demonstrate that I understand how to use Git, CMake, Travis-CI, and how to write tests, but I can also simply link to the Travis-CI page so they can see the output of the tests. I figured that'd make it a tiny bit more convenient for the interviewer. Since I know those technologies well, it would add essentially no time to the assignment. However, I'm a bit worried that doing all this for a relatively simple task would look bad. Although it wouldn't add much more time at all for me, I don't want them thinking I spend too much time on things that should be simple.

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• Guidance for a C# developer to become better UI developer

  - by Pankaj Upadhyay

  I am a C# developer and had developed simple websites in regular asp.net(with asp.net controls) and a wpf application. Nowadays, I am trying myself in Asp.net MVC3 and been exposed to the HTML with Razor view Engine. To be honest, I am not too good or I should awful at my knowledge of HTML and CSS. Therefore, I keep posting questions now and then on SO for very simple tasks. This has made me very tired of the this Q&A development process. So, now i am thinking of learning the basics of HTML, CSS and maybe some Javascript. Therefore i would request you to guide me to become an efficient enough developer for these technologies. Something that won't take much time and get me up and running fast.

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• Creating an email notification system based on polling database rows

  - by Ashish Sharma

  I have to design an email notification system based on the following requirements: The email notifications would be created based on polling rows in a Mysql 5.5 DB table when they are in a particular 'Completed' state. The email notification should be sent out in no more than 5 minutes from the time the row was created in the DB table (At the time of DB table row creation the state of the row might not be 'Completed'). Once 5 minutes for the DB table row expire in reaching the 'Completed' state, separate email notification need to be sent (basically telling the user that the original email notification would be delayed) and then sending the email notification as and when the row state reaches to being 'Completed'. The rest of the system requirements are : Adding relevant checks to monitor the whole system via MBeans interface. The system should be scalable so that if the rate of DB table rows creation increases so does the Email notification system be able to ramp up. So I request suggestions on following lines: What approach should I take in solving the problem described from a programming/Design pattern point of view? Suggestion for any third party plugin/software that can be used to solve the problem described? Points to take care regarding scalability and monitoring the health of the system? Java is the language of preference but I am open to using off the shelf components that can be interfaced with Java language or provide standard ports for communication. Currently I do have an in house grown system (written in Java) that is catering to the specified requirements, but it's now crumbling under increased load and now I want to give the problem a fresh look. thanks in advance Ashish

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• Abstracting away the type of a property

  - by L. De Leo

  In Python luckily most of the times you don't have to write getters and setters to get access to class properties. That said sometimes you'll have to remember that a certain property is a list or whatnot and a property would save you there by abstracting the type and providing a setter to add something to such list for example rather than exposing the list directly. Where do you draw the line between exposing the type directly or wrapping its access in a property? What's the general "pythonic" advice?

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• What are the benefits of Castle Monorail 3 over ASP.Net MVC?

  - by yorch

  I have been using Castle Monorail for some years now with great success, although I haven't bothered to update the version I'm using (2 or 3 year old). Now I'm making a decision on go to ASP.Net MVC 3 or update to the latest Castle version. I have been looking documentation on the newest version of Castle projects (specially Monorail), but there is really little or no info around (I may be wrong). Does someone knows what are the benefits/new features of version 3 over ASP.Net MVC3? Thanks!

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• How to cross-reference many character encodings with ASCII OR UTFx?

  - by Garet Claborn

  I'm working with a binary structure, the goal of which is to index the significance of specific bits for any character encoding so that we may trigger events while doing specific checks against the profile. Each character encoding scheme has an associated system record. This record's leading value will be a C++ unsigned long long binary value and signifies the length, in bits, of encoded characters. Following the length are three values, each is a bit field of that length. offset_mask - defines the occurrence of non-printable characters within the min,max of print_mask range_mask - defines the occurrence of the most popular 50% of printable characters print_mask - defines the occurrence value of printable characters The structure of profiles has changed from the op of this question. Most likely I will try to factorize or compress these values in the long-term instead of starting out with ranges after reading more. I have to write some of the core functionality for these main reasons. It has to fit into a particular event architecture we are using, Better understanding of character encoding. I'm about to need it. Integrating into non-linear design is excluding many libraries without special hooks. I'm unsure if there is a standard, cross-encoding mechanism for communicating such data already. I'm just starting to look into how chardet might do profiling as suggested by @amon. The Unicode BOM would be easily enough (for my current project) if all encodings were Unicode. Of course ideally, one would like to support all encodings, but I'm not asking about implementation - only the general case. How can these profiles be efficiently populated, to produce a set of bitmasks which we can use to match strings with common characters in multiple languages? If you have any editing suggestions please feel free, I am a lightweight when it comes to localization, which is why I'm trying to reach out to the more experienced. Any caveats you may be able to help with will be appreciated.

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• Transitioning from Oracle based CMS to MySQL based CMS

  - by KM01

  We're looking at a replacement for our CMS which runs on Oracle. The new CMSes that we've looked at can in theory run on Oracle, but most of the vendor's installs run off of MySQL vendor supports install of their CMS on MySQL, and a "theoretical" install on Oracle the vendor's dev shops use MySQL none of them develop/test against Oracle Our DBA team works exclusively with Oracle, and doesn't have the bandwidth to provide additional support for a highly available and performing MySQL setup. They could in theory go to training and get ramped up, but our time line is also short (surprise!). So ... I guess my question(s) are: If you've seen a situation like this, how have you dealt with it? What tipped the balance either way? What type of effort did it take? If you're to do it over, what would you do differently ... ? Thanks! KM

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• Any experience with Mono on production servers?

  - by Jonas

  I am curios to use .NET for some web applications (e.g. ASP.NET MVC 2). However my budget is limited so I would like to use Mono on Linux. I have never used Mono before, and I haven't read about any bigger sites that is using Mono+Linux on the server in production. What's your experience using Mono on Linux in production? How is the performance and stability compared to .NET on Windows Server? Is there any popular sites that is using it in production? Any articles available online were they share their experiences?

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• Software consultancy or in-house development?

  - by JefClaes

  What are the benefits and drawbacks of working as an in-house developer versus working as a consultant and vice versa? I am pretty sure both breeds can be found on these forums and I hope you are willing to share your experience. Edit: Let me clarify the question. I wonder what the experience is like being a developer. For example: being an in-house developer, you are able to learn from your mistakes. Being a consultant is often more challenging, because there is more variety in the problems you have to solve. PS: Although I realise that this is a subjective question, I don't necessarily see it as one of those bad-subjective questions.

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• Publish a software with copyright and license

  - by King Chan

  I just read some artical about publishing software and I am personally developing some random metero application at the moment. The artical were suggesting the software should have a publisher website. But what I have to put down in the publisher website to keep my copyright? Is it simply really just "Designed/Developed @ 2012 By King Chan" at the bottom of the site and software and is enough? Or do I have to even write a long paragraph of license/agreement said the user who download/use the software cannot copy the icon/functionality etc? (The Apple and Samsung things get me worry about CopyRight now....)

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• Remapping keyboard to get extra cursor keys - but why stick to VIM standard hjkl

  - by Carlo V. Dango

  Inspired from VIM I recently remapped my keyboard layout to get extra keys for cursor movement. Being fluent in both QWERTY and DVORAK, it came quite natural to me to remap the DF and JK keys rather than the VIM standard hjkl keys. Here is my reasoning It enables me to quickly identify cursor keys since F and J are physically marked on my keyboard I'm using two hands for movement rather than one. I guess from DVORAK I learned to appreciate shifting between hands rather than using primarily one hand. It maps well with the Kinesis keyboard mapping http://www.kinesis-ergo.com/advantage.htm that I use occasionally. I feel I'm using my strongest fingers. I don't have to stretch my right index finger to read H as I would using the VIM layout. However, since I am still doing green field explorations on the cursor key remapping, I'd like others to share their experiences and/or criticize my suggested mapping. PS. If you want to toy around with my remapping using Autohotkey here is my script ; extra cursor keys. !d:: Send {Left} <^>!d:: Send {Left} !f:: Send {Right} <^>!f:: Send {Right} !j:: Send {Up} <^>!j:: Send {Up} !k:: Send {Down} <^>!k:: Send {Down} The question Is this mapping sane or is the VIM mapping superior?

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• Ruby freelancing: realistic expectations?

  - by Sophie

  Hi guys, I'm in a situation where I only need $100 to live at a place. How is this relevant to programming? Well, I would like to hear the opinions of those on this site if it is at all realistic to expect a Ruby noobie to be able to make $100 freelancing by a month from now, assuming a great deal of effort and enthusiasm o_O I'm a complete noob to programming ;d, learning Ruby before Rails. (I also asked this on StackOverflow, but want lots of answers so .<)

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• A standard style guide or best-practice guide for web application development

  - by gutch

  I run a very small team of developers on a web application, just three people (and not even full time). We're all capable developers, but we write our code in very different ways: we name similar things in different ways, we use different HTML and CSS to achieve similar outcomes. We can manage this OK because we're small, but can't help feeling it would be better to get some standards in place. Are there any good style guides or best-practice guides for web application development that we can use to keep our code under control? Sure, we could write them ourselves. But the reality is that with lots to do and very few staff, we're not going to bother. We need something off the shelf that we can tinker with rather than start from scratch. What we're not looking for here is basic code formatting rules like "whether to use tabs or spaces" or "where to put line breaks" — we can control this by standardising our IDEs. What we are looking for are rules for code and markup. For example: What HTML markup should be used for headers, tables, sidebars, buttons, etc. When to add new CSS styles, and what to name them When IDs should be allocated to HTML elements, and what to name them How Javascript functions should be declared and called How to pick an appropriate URL for given page or AJAX call When to use each HTTP method, ie POST vs GET vs PUT etc How to name server-side methods (Java, in our case) How to throw and handle errors and exceptions in a consistent way etc, etc.

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• What's The Difference Between Imperative, Procedural and Structured Programming?

  - by daniels

  By researching around (books, Wikipedia, similar questions on SE, etc) I came to understand that Imperative programming is one of the major programming paradigms, where you describe a series of commands (or statements) for the computer to execute (so you pretty much order it to take specific actions, hence the name "imperative"). So far so good. Procedural programming, on the other hand, is a specific type (or subset) of Imperative programming, where you use procedures (i.e., functions) to describe the commands the computer should perform. First question: Is there an Imperative programming language which is not procedural? In other words, can you have Imperative programming without procedures? Update: This first question seems to be answered. A language CAN be imperative without being procedural or structured. An example is pure Assembly language. Then you also have Structured programming, which seems to be another type (or subset) of Imperative programming, which emerged to remove the reliance on the GOTO statement. Second question: What is the difference between procedural and structured programming? Can you have one without the other, and vice-versa? Can we say procedural programming is a subset of structured programming, as in the image?

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• How do one improve him/her problem-solving ability ?

  - by gcc

  How can one improve him/her problem-solving ability? Every one says same thing "a real programmer knows how to handle real problem", but they forget how they learn this ability, or where (I know in school, no one gives us any ability, of course in my opinion). If you have any idea except above ones, feel free when you give your advice solve more problems do more exercises, write code, search google then write more ... For me, my question is like "Use complex/known library instead of using your own." In other words,t I want your presonal experience, book recommendation, web page on problem solving. Moreover, look your problem-solving method and give us your personal ability as if it is an algorithm

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• Are VB.NET to C# converters actually compilers?

  - by Rowan Freeman

  Whenever I see programs or scripts that convert between high-level programming languages they are always labelled as converters. "VB.NET to C# converter" on Google results in expected, useful hits. However "VB.NET to C# compiler" on Google results in things like comparisons between the C# and VB.NET compilers and other hits that are not quite what you'd be looking for. Webopedia defines Compiler as A program that translates source code into object code Eric Lipper in an answer to: "How do I create my own programming language and a compiler for it" suggests: One of the best ways to get started writing a compiler is by writing a high-level-language-to-high-level-language compiler. Is a converter really just a compiler? What separates the two?

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• How do you guys handle translation for software localization?

  - by JohnFx

  Most of the software I have written over my career has been built for English speaking customers, but recently I've been working on a project where localization of the UI for a wider range of languages is desired. I am just curious how other programming shops obtain the translations. Do they use the notoriously flawed online translation engines? I know there are for-hire translators out there, but am I going to have to track down and contract like a dozen of them to do a thorough job of localizing my interface? Are there services that specialize in doing this for a wide range of languages? Perhaps using something like Amazon's Mechanical Turk would be an option, but I have no idea how diverse the available workforce is on that site. I'd imagine not very.

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