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• Is it worth being computer languages polyglot?

  - by Anton Barkowski

  You can often hear that programmers should learn many different languages to improve themselves. I still go to school and don't have big programming experience (a little more than year). But what was noble intention to improve programming skills turned into some kind of OCD: I feel that I won't calm down until I learn all relatively known programming languages. And here is question itself: Will being programming languages polyglot actually help you (And I don't mean usual "Programmer should know at least all paradigms", I mean really all languages you usually hear about)? Does anybody have similar experience? Does it help with job/skills/career? How often are you able to apply those skills?

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• Which shopping cart / ecommerce platform to choose?

  - by fabien7474

  I need to build an ecommerce website within a tight budget and schedule. Of course, I have never done that before, so I have googled out what my solutions are and I have concluded that the following were not valid candidates anymore : Magento : Steep learning curve osCommerce : old, bad design, buggy and not user-friendly Zencart, CRE Loaded, CubeCart : based on osCommerce Virtuemart, uberCart, eCart : based on CMS (Joomal, Drupal, WordPress) that is not necessary for my use-case So I finally narrowed down my choices to these solutions : PrestaShop : easy-to-use, great templating engine (smarty) but many modules are not free buy yet indispensable OpenCart : security issues and not a great support from the main developer. See here and here. So, as you can see, I am a little bit confused and if you can help me choosing an easy-to-use, lightweight and cheap (not-necessarily free) ecommerce solution, I would really appreciate. By the way, I am a Java/Grails programmer but I am also familiar with PHP and .NET. (not with Python or Ruby/Rails) EDIT: It seems that this question is more appropriate for the Webmaster StackExchange site. So please move this question to where it belongs (I cannot do that) instead of downvoting it. BTW, I have found out a question quite similar on SO (http://stackoverflow.com/questions/3315638/php-ecommerce-system-which-one-is-easiest-to-modify) which is quite popular.

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• My Latest Hare-Brained Scheme

  - by Liam McLennan

  I have not had a significant side project for a while but I have been working on a product idea. Its an analytics application that analyses twitter data and reports on market sentiment. The target market is companies who want to track trends in consumer sentiment. My idea is to teach the application to divide relevant tweets into ‘positive’ and ‘negative’ categories. If the input was the set of tweets featuring the word ‘telstra’ the application would find the following tweet:   and put it in the ‘negative’ category. Collecting data in this fashion facilitates the creation of graphs such as: which can then be correlated against events, such as a share offer or new product release. I may go ahead and build this, just because I am a programmer and it amuses me to do so. My concerns are: There  is no market for this tool There is a market, but I don’t understand it and have no way to reach it.

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• Five C# Code Snippets

  A snippet is a small section of text or source code that can be inserted into the code of a program. Snippets provide an easy way to implement commonly used code or functions into a larger section of code. Instead of rewriting the same code over and over again, a programmer can save the code [...] Related posts:How To Obtain Environment Details With .NET 3.5 How-to: Easily Send Emails With .NET Understanding SMTP Status Codes ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Is there a Windows philosophy of programming?

  - by Maglob

  I've been programming both in Unix and Windows environments. Mostly I've worked in Unix, where I've learned Unix Philosophy, which can be summarized as Write programs that do one thing and do it well. Write programs to work together. Write programs to handle text streams, because that is a universal interface. There seems to be a clear difference in programming cultures between Unix and Windows worlds, for example: GUI vs CLI Registry vs config files Lots of tools specializing for any given need vs group of generic orthogonal tools which can combined Is there equivalent of "Unix philosophy" in Windows world? What Unix-programmer can learn from Windows or should be aware of when moving to programming in Windows? I would like answers to focus on the best practices of Windows programming (and not a fight between Windows and Unix).

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• Developer Preview of Java SE 8 for ARM Now Available

  - by Tori Wieldt

  A Developer Preview of Java SE 8 including JavaFX (JDK 8) on Linux for ARM processors is now available for immediate download from Java.net. As Java Evangelist Stephen Chin says, "This is a great platform for doing small embedded projects, a low cost computing system for teaching, and great fun for hobbyists." This Developer Preview is provided to the community so that you can provide us with valuable feedback on the ongoing progress of the project. We wanted to get this release out to you as quickly as we can so you can start using this build of Java SE 8 on an ARM device, such as the Raspberry Pi (http://raspberrypi.org/). Download JDK 8 for ARM Read the documentation for this early access release Let Us Know What You Think!Use the Forums to share your stories, comments and questions. Java SE Snapshots: Project Feedback Forum  JavaFX Forum We are interested in both problems and success stories. If something does not work or behaves differently than what you expect, please check the list of known issues and if yours is not listed there, then report a bug at JIRA Bug Tracking System. More ResourcesJavaFX on Raspberry Pi – 3 Easy Steps by Stephen Chin OTN Tech Article: Getting Started with Java SE Embedded on the Raspberry Pi by Bill Courington and Gary Collins Java Magazine Article: Getting Started with Java SE for Embedded Devices on Raspberry Pi (Free subscription required) Video: Quickie Guide Getting Java Embedded Running on Raspberry Pi by Hinkmond Wong 

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• Is there any one standard framework for developing Python GUI apps.?

  - by RPK

  There are so many frameworks for writing GUI application using Python. But is there any one key standard framework? For example we have a bundle of .NET/C# on Visual Studio. I am thinking in other perspectives also. In future if I give an interview for a Python programmer job, which GUI framework will be considered? I also wonder, there is no IDE that integrates the GUI and Python language. Choice of flavor is good but over-choice becomes a distraction.

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• How to structure a C ,C++ questionnaire for freshers?

  - by amar

  I am primarily a programmer but one of my recent responsibility is to create a questionnaire, which has following properties. 1.Objective or very small code snippets. 2.Since target is for freshers it should test them on basics. I have to test if a fresh graduate with CS degree is good enough to be trained in mobility, to be particular iOS I have the questions i want to have a better understanding of distribution of questions.Like how much should i emphasize on memory management and how much on data structure etc what can be the best possible composition of the questionnaire. Thanku

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• Oracle Systems and Solutions at CloudExpo NY 2012

  - by ferhat

  Oracle's Larry Ellison and Mark Hurd just unveiled industy's broadest cloud strategy on June 6, with services based on industry standards, with 100+ enterprise applications live in the Cloud today!  The broadest strategy to support your journey along the cloud in any path chose, at any pace your business require and need. This is great assurance for your journey into the clouds as it is, at the same time, quite a temptation, don't you think? We will be at the Cloud Expo Conference to take place June 11-14 in New York. Oracle is Platinum Plus sponsor of 10th International  Cloud Computing Conference & Expo 2012 East. Oracle is also glad to offer complimentary VIP Gold Passes to the conference. We wish everyone a great and productive time with all  the fellow cloudsters.  We, the systems solutions group at Oracle, have prepared Oracle Optimized Solution for Enterprise Cloud Infrastructure to help you start your Infrastructure-as-a-Service with ease, confidence, speed, and savings.  In this solution we are now bringing together the power of Oracle Solaris and SPARC T4 servers. We will be at the Cloud Bootcamp on Wednesday June 13th discussing how this combination can maximize return on investment and help organizations manage costs for their existing infrastructures or for new enterprise cloud infrastructure design. We will also be at the Expo floor #511 throughout the Cloud Expo conference. Join us for the keynote, general session, and technical sessions with Oracle: Keynote Session: A Pragmatic Journey to the Cloud , Tuesday, June 12, 2012 General Session: Oracle Cloud - An Enterprise Cloud for Business-Critical Applications , Monday, June 11, 2012 Conference Session: Accelerate Enterprise Cloud Deployment and Gain Total Cloud Control, Monday, June 11, 2012 Conference Session: The Java EE 7 Platform: Developing for the Cloud, Monday, June 11, 2012 Conference Session: Integrating Big Data into Your Data Center: A Big Data Reference Architecture, Monday, June 11, 2012 Conference Session: Borderless Applications in the Cloud with Oracle VM and Oracle Virtual Assembly Builder, Tuesday, June 12, 2012 Conference Session: Building a Private, Public, or Hybrid Cloud? Simplify Your Cloud with Oracle’s Complete Cloud Solution,Tuesday, June 12, 2012 Cloud Boot Camp: Building Private IaaS with Oracle Solaris and SPARC, Wednesday, June 13, 2012

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• Do programmers at non-software companies need the same things as at software companies?

  - by Michael

  There is a lot of evidence that things like offices, multiple screens, administration rights of your own computer, and being allowed whatever software you want is great for productivity while developing. However, the studies I've seen tend toward companies that sell software. Therefore, keeping the programmers productive is paramount to the company's profitability. However, at companies that produce software simply to support their primary function, programming is merely a support role. Do the same rules apply at a company that only uses the software they produce to support their business, and a lot of a programmer's work is maintainence?

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• «Le projet de loi des droits du développeur» : quelles conditions doivent remplir les entreprises pour que le développeur puisse réussir ?

  « Le projet de loi des droits du développeur » quels éléments fondamentaux doivent fournir les entreprises pour que le développeur puisse réussir dans son métier ? Le métier de développeur nécessite un environnement adapté, des outils et un certain confort pour un meilleur rendement. Cependant, plusieurs entreprises ne fournissent toujours pas au développeur les éléments essentiels dont il a besoin pour réussir. Je suis tombé sur un ancien billet de Jeff Atwood, illustre blogueur, intitulé « The Programmer's Bill of Rights » (projet de loi des droits du programmeur), qui propose un projet de loi pour la protection des droits des programmeurs en empêchant les entrepr...

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• New York Coherence Special Interest Group, Jan 13 2011

  - by ruma.sanyal

  Please join us for our next exciting event. We are pleased to announce that Aleksander Seovic, Craig Blitz and Madhav Sathe will be presenting to our group. Presentation details are provided below. Time: 3:00pm - 6:00pm ET Where: Oracle Office, Room 30076, 520 Madison Avenue, 30th Floor, NY We will be providing snacks and beverages. Register! - Registration is required for building security. Presentations:? Getting the Most out of your Coherence Cluster with Oracle Enterprise Manager - Madhav Sathe, Principal Product Manager (Oracle) How To Build a Coherence Practice - Craig Blitz, Senior Principal Product Manager (Oracle) Congratulations on your decision to buy Oracle Coherence. We believe you have chosen an excellent product. Now the hard work begins. To help you get the most out of Coherence from both a project and enterprise perspective, this talk will introduce you to resources available from Oracle and through the Coherence ecosystem. The talk will also discuss best organizational practices you can implement to ensure success with Coherence. The speaker will use his significant experience with customers' Coherence deployment to show what works and what doesn't in practice. Coherence in the Cloud - Aleksandar Seovic, Founder and Managing Director (S4HC) Amazon Web Services cloud provides great and affordable foundation for the next generation of scalable web applications. Application servers, load balancers, and scalable storage can be provisioned in a matter of minutes and used for pennies an hour. However, AWS cloud also brings a set of new architectural challenges, such as transient file systems and dynamically assigned IP addresses. In this session we will look at a real-world example of how Coherence can be used to address some of these challenges and show why the combination of AWS cloud and Coherence has a great synergy.

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• Craftsmanship Tour Day 1: Didit Long Island

  - by Liam McLennan

  On Monday I was at Didit for my first ever craftsmanship visit. Didit seem to occupy a good part of a non-descript building in Rockville Centre Long Island. Since I had arrived early from Seattle I had some time to kill, so I stopped at the Rockville Diner on the corner of N Park Ave and Sunrise Hwy. I thoroughly enjoyed the pancakes and the friendly service. After walking to the Didit office I met Rik Dryfoos, the Didit Engineering Manager who organised my visit, and got the introduction to Didit and the work they are doing. I spent the morning in the room shared by the Didit developers, who are working on some fascinating deep engineering problems. After lunch at a local Thai place I setup a webcam to record an interview with Rik and Matt Roman (Didit VP of Engineering). I had a lot of trouble with the webcam, including losing several minutes of conversation, but in the end I was very happy the result. Here are the full interviews with Rik and Matt: Interview with Rik Dryfoos Interview with Matt Roman We had a great chat, much of which is captured in the recording. It was such great conversation that I almost missed my train to Manhattan. I’m sure Didit will continue to do well with such a dedicated and enthusiastic team. I sincerely thank them for hosting me for the day. If you are looking for a true agile environment and the opportunity to work with a high quality team then you should talk to Didit.

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• Design patterns and multiple programming languages

  - by Eduard Florinescu

  I am referring here to the design patterns found in the GOF book. First, how I see it, there are a few peculiarities to design pattern and knowing multiple languages, for example in Java you really need a singleton but in Python you can do without it you write a module, I saw somewhere a wiki trying to write all GOF patterns for JavaScript and all the entries were empty, I guess because it might be a daunting task to do that adaptation. If there is someone who is using design patterns and is programming multiple languages supporting the OOP paradigm and can give me a hint on how should I approach design patterns. An approach that might help me in all languages I use(Java, JavaScript, Python, Ruby): Can I write good application without knowing exactly the GOF design patterns or I might need just some of them which might be crucial and if yes which one, are there alternatives to GOF for specific languages, and should a programmer or a team make their own design patterns set?

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• Learning HTML5 - Best of RSS

  - by Albers

  These are some of the best RSS feeds I've found for keeping up with HTML5. I'm doing jQuery & MVC development as well so you will find the links have a jQuery/MS angle to them. WhenCanIUse The oh-so-necessary caniuse.com, in RSS update format: http://feeds.feedburner.com/WhenCanIUse ScriptJunkie http://services.social.microsoft.com/feeds/feed/query/tag/scriptjunkieLearn/eq/ns/DiscoveryFeedTool/eq/andA good HTML, JavaScript, CSS site hosted by MS Rachel Appel's blog http://rachelappel.com/rss?containerid=13HTML5, JavaScript, and MVC links with a general MS angle Smashing Magazine http://rss1.smashingmagazine.com/feed/Really high quality articles with a focus towards the design side of the web development picture IEBlog blogs.msdn.com/b/ie/rss.aspxNo surprise - the focus is on IE10, but it is really a great resource for new browser tech. MisfitGeek http://feeds.feedburner.com/MisfitGeekJoe recently switched from MS to Mozilla. New job but he still puts out great Weekly Links summaries. The Big Web Show http://feeds.feedburner.com/bigwebshowA podcast covering web development & design topics Elijah Manor/Web Dev .NET I'm cheating on this one a little bit. Elijah is a fantastic JS & web development resource. He has a site at Web Dev .NET, but honestly these days you are better off following him on Google+ ...and you can of course sign up to follow the W3C as well, although I don't think there is an HTML5-specific RSS feed. Good luck!

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• Learning Python is good?

  - by user15220

  Recently I have seen some videos from MIT on computer programming topics. I found it's really worth watching. Especially the concepts of algorithms and fundamental stuffs. The programs were written and explained in Python. I never had looked into this language before as I learned and doing stuffs with C/C++ programming. But the cleanliness and better readability of syntax attracted me. Of course as a C++ programmer for long time it's the most readable language for me. Also I heard Python library contains solid algorithms and data-structures implementations. Can you share your experience in this language?

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• Books and stories on programming culture, specifically in the 80's / early 90's

  - by Ivo van der Wijk

  I've enjoyed a number of (fiction/non-fiction books) about hacker culture and running a software business in the 80's, 90's. For some reason things seemed so much more exciting back then. Examples are: Microserfs (Douglas Coupland) Accidental Empires (Robert X. Cringely Almost Pefect (W.E. Peterson, online!) Coders at Work (Peter Seibel) Today I'm an entrepeneur and programmer. Back in the 80's a I was a young geek hacking DOS TSR's and coding GWBasic / QBasic. In the 90's I was a C.S. university student, experiencing the rise of the Internet world wide. When reading these books running a software business seemed so much more fun than it is nowadays. Things used to be so much simpler, opportunities seemed to be everywhere and the startups seemed to work with much more real problems (inventing spreadsheets, writing word processors in assembly on 6 different platforms) than all our current web 2.0 social networking toys. Does anyone share these feelings? Does anyone have any good (personal) stories from back then or know of other good books to read?

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• MVVM Project and Item Templates

  - by Timmy Kokke

  Intro This is the first in a series of small articles about what is new in Silverlight 4 and Expression Blend 4. The series is build around a open source demo application SilverAmp which is available on http://SilverAmp.CodePlex.com.   MVVM Project and Item Templates Expression Blend has got a new project template to get started with a Model-View-ViewModel project  easily. The template provides you with a View and a ViewModel bound together. It also adds the ViewModel to the SampleData of your project. It is available for both Silverlight and Wpf. To get going, start a new project in Expression Blend and select Silverlight DataBound Application from the Silverlight project type. In this case I named the project DemoTest1. The solution now contains several folders: SampleData; which contains a data to show in Blend ViewModels; starts with one file, MainViewModel.cs Views; containing MainView.xaml with codebehind used for binding with the MainViewModel class. and your regular App.xaml and MainPage.xaml The MainViewModel class contains a sample property and a sample method. Both the property and the method are used in the MainView control. The MainView control is a regular UserControl and is placed in the MainPage. You can continue on building your applicaition by adding your own properties and methods to the ViewModel and adding controls to the View. Adding Views with ViewModels is very easy too. The guys at Microsoft where nice enough to add a new Item template too: a UserControl with ViewModel. If you add this new item to the root of your solution it will add the .xaml file to the views folder and a .cs file to the ViewModels folder. Conclusion The databound Application project type is a great to get your MVVM based project started. It also functions a great source of information about how to connect it all together.   Technorati Tags: Silverlight,Wpf,Expression Blend,MVVM

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• LSP vs OCP / Liskov Substitution VS Open Close

  - by Kolyunya

  I am trying to understand the SOLID principles of OOP and I've come to the conclusion that LSP and OCP have some similarities (if not to say more). the open/closed principle states "software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification". LSP in simple words states that any instance of Foo can be replaced with any instance of Bar which is derived from Foo and the program will work the same very way. I'm not a pro OOP programmer, but it seems to me that LSP is only possible if Bar, derived from Foo does not change anything in it but only extends it. That means that in particular program LSP is true only when OCP is true and OCP is true only if LSP is true. That means that they are equal. Correct me if I'm wrong. I really want to understand these ideas. Great thanks for an answer.

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• Pro Google App Engine developer interview questions (with answers)

  - by WooYek

  What are good questions to determine if applicant is pro Google App Egine developer? Questions that can distinguish that someone is not an ad-hoc GAE programmer, but is really doing professional GAE development, with all areas concerned (eg. performance, transactions, async/batch data processing). Please provide answers, so an intermediate developer (such as myself :) can interview someone more experienced. Please avoid open questions. If possible please provide a link to a documentation part that's covering a topic in question. Please keep one interview question/answer per response for better reading experience and easier interview preparation.

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• No SQLCompact Edition Support IN VS 2013

  - by James Izzard

  Firstly apologies if this is a poor question - I am an engineer not a programmer. I have spent time moving from Visual Basic to C#. I have started C#/SQL tutorials. I have noticed VS 2013 has stopped supporting the compact edition database normally used for standalone desktop apps. Somebody has kindly written a plugin to re-implement support. I have also noticed a belief circulating that SQLite is to replace the compact edition. Would anybody be able to advise if this was accurate - I am slightly confused as to which database is best suited for desktop app development inside VS 2013. Any comment greatly appreciated. Cheers James

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• How do I document my code?

  - by Brian Ortiz

  I'm a hobbyist programmer (with no formal education) looking to start doing small freelance jobs. One of the things that hobbyist programmers can get away with that those with a "real" job can't is lack of documentation. After all, you wrote it so you know how it works. I feel a little silly asking because it seems like such a basic thing, but how do I document my code? How should it be formatted? How should it be presented? (HTML pages? LaTeX?) What does/doesn't need to be documented? ...And maybe more specifics I haven't thought of. I mostly program in PHP but also C#.

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• How can I most efficiently communicate my personal code of ethics, and its implications?

  - by blueberryfields

  There is a lot to the definition of a professional. There are many questions here asking how to identify components of what is essentially a professional programmer - how do you identify or communicate expertise, specialization, high quality work, excellent skills in relation to the profession. I am specifically looking for methods to communicate a specific component, and I quote from wikipedia: A high standard of professional ethics, behavior and work activities while carrying out one's profession (as an employee, self-employed person, career, enterprise, business, company, or partnership/associate/colleague, etc.). The professional owes a higher duty to a client, often a privilege of confidentiality, as well as a duty not to abandon the client just because he or she may not be able to pay or remunerate the professional. Often the professional is required to put the interest of the client ahead of his own interests. How can I most efficiently communicate my professionalism, in the spirit of the quote above, to current and potential clients and employers?

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• Gmail Doesn't Like My Cron

  - by Robery Stackhouse

  You might wonder what *nix administration has to do with maker culture. Plenty, if *nix is your automation platform of choice. I am using Ubuntu, Exim, and Ruby as the supporting cast of characters for my reminder service. Being able to send yourself an email with some data or a link at a pre-selected time is a pretty handy thing to be able to do indeed. Works great for jogging my less-than-great memory. http://www.linuxsa.org.au/tips/time.html http://forum.slicehost.com/comments.php?DiscussionID=402&page=1 http://articles.slicehost.com/2007/10/24/creating-a-reverse-dns-record http://forum.slicehost.com/comments.php?DiscussionID=1900 http://www.cyberciti.biz/faq/how-to-test-or-check-reverse-dns/ After going on a huge round the world wild goose chase, I finally was told by someone on the exim-users list that my IP was in a range blocked by Spamhaus PBL. Google said I need an SPF record http://articles.slicehost.com/2008/8/8/email-setting-a-sender-policy-framework-spf-record http://old.openspf.org/wizard.html http://www.kitterman.com/spf/validate.html The version of Exim that I could get from the Ubuntu package manager didn't support DKIM. So I uninstalled Exim and installed Postfix https://help.ubuntu.com/community/UbuntuTime http://www.sendmail.org/dkim/checker

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• How do I approach large companies if I have a killer mobile game idea?

  - by Balázs Dávid

  I have an idea for a game that has potential, but I'm not a programmer. How do I tell this to development companies without having my idea stolen? All I want from the company is for somebody to watch a three minute long video presentation about my idea and if they see potential in it then we can talk about the details. I have already sent an e-mail to several big companies that have the expertise needed to code the game, they haven't answered me. Actually the idea is nothing fancy, no 3D, but fun and unique.

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