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  • How to cover the widest range of computers when publishing?

    - by DevilWithin
    When you plan a game, or even when you already made a game, and its time to publish, you wonder how much of your audience is covered by the game technology demands. I'm directing this essentialy to casual games, as I constantly see people having old laptops and being unable to replace them. Laptops with integrated cards whose OpenGL version doesn't even support textures larger than 1024x1024. These people may be avid gamers as well, and a reasonable share of the audience to consider giving them the chance to play casual games, once they cannot play any blockbusters. As I've seen happening, a very "noticeable" example is Angry Birds. It's gameplay is merely casual (I think nobody disagrees here) and still, it uses so high resolution textures that at least OpenGL 2.0 or around is needed, which blocks away a lot of people. So, the actual question is: what is a good tradeoff for this issue? Would it be better to just sacrifice the texture resolution for everyone, but have more supported hardware? Would it be better to keep the high quality and just slice the textures into smaller ones, sacrificing the performance a little bit? What else? Any ideas about this topic are welcome for discussion.

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  • What kind of language will replace C++ as C++ replaced C ? [closed]

    - by jokoon
    I think I'm not totally wrong when thinking that C++0x (or C++1x) is still C++, just better, with functionnalities coming from boost. I can't stop thinking that computer sciences, even with all that has been made so far, have to evolve again. I don't really like D since it just try to be some sort of "what C++ should have been", and Go seems to be too sophisticated when I dig a little into it, especially after watching some presentation video like this one http://www.youtube.com/watch?v=rKnDgT73v8s The first thing that come into my mind is a new kind of syntax to directly handle specific datatypes and containers such as map, vectors, queues... What kind of things are researchers thinking about ? What are the real features that could make C++ better or a new C-like language could invent ? Does Go features such things ? Would there be a new kind of syntax that would "unbloat" C++ while keeping its advantages ? Could C++ have some of the interesting stuff of languages such as C# and ObjC ? EDIT: Please consider that I'm talking about a system language, not a VM/CLI/bytecode thing.

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  • Training a spam filter based on Mailman moderator's actions?

    - by mc0e
    I'm planning a Mailman server, and looking for a good way to enable list moderators train a spam filter (likely to be either spamassassin or dspam). Has anyone come up with a good way to run training based on list moderator's decisions? Currently I don't have any better strategies than asking list moderators to forward spams one by one to a training address, which seems laborious and most likely to be inconsistently applied. Any ideas? I am aware of https://bugs.launchpad.net/mailman/+bug/558292 . I'm hoping someone has a better approach.

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  • What packages do I install for ffmpeg and libmp3lame?

    - by matt wilkie
    On my desktop Ubuntu 10.4 I use ffmpeg to convert videos to a format my dvd-player understands. On my laptop running 10.10 I can't get the same command to work, what package(s) are missing? ffmpeg -i infile.flv \ -threads 2 -vcodec mpeg4 -vtag divx -acodec libmp3lame -sameq \ outfile.avi #...snip Unknown encoder 'libmp3lame' Using apt-cache search libmp3lame I'm told there exist libmp3lame0 and libmp3lame-dev, both of which I've installed. Using acodec libmp3lame0 doesn't work either.

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  • Trackpad Drag lock pissing me off with Windows 7

    - by rockinthesixstring
    This is driving me insane and I've scowered the web for two days trying to fix this. I just picked up an Apple Magic Trackpad to be used exclusively on a Windows 7 PC (not apple with bootcamp). I found a nice driver that got it working right away, but when I'm moving the cursor around the screen, often it will begin "highlighting" text, or picking up and dragging things I don't want it to. I looked in the "regedit" where people are saying there is binary that can be changed, however the driver I installed doesn't use the binary being suggested. Can anyone suggest a better driver for my situation or a way to disable the drag lock that is driving me so nuts? I don't mind not being able to lift my finger when dragging, it's a far better compromise than having the insane feature.

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  • On the art of self-promotion

    - by Tony Davis
    I attended Brent Ozar's Building the Fastest SQL Servers session at Tech Ed last week, and found myself engulfed in a 'perfect storm' of excellent technical and presentational skills coupled with an astute awareness of the value of promoting one's work. I spend a lot of time at such events talking to developers and DBAs about the value of blogging and writing articles, and my impression is that some could benefit from a touch less modesty and a little more self-promotion. I sense a reticence in many would-be writers. Is what I have to say important enough? Haven't far more qualified and established commentators, MVPs and so on, already said it? While it's a good idea to pick reasonably fresh and interesting topics, it's more important not to let such fears lead to writer's block. In the eyes of any future employer, your published writing is an extension of your resume. They will not care that a certain MVP knows how to solve problem x, but they will be very interested to see that you have tackled that same problem, and solved it in your own way, and described the process in your own voice. In your current job, your writing is one of the ways you can express to your peers, and to the organization as a whole, the value of what you contribute. Many Developers and DBAs seem to rely on the idea that their work will speak for itself, and that their skill shines out from it. Unfortunately, this isn't always true. Many Development DBAs, for example, will be painfully aware of the massive effort involved in tuning and adding resilience to rapidly developed applications. However, others in the organization who are unaware of what's involved in getting an application that is 'done' ready for production may dismiss such efforts as fussiness or conservatism. At the dark end of the development cycle, chickens come home to roost, but their droppings tend to land on those trying to clear up the mess. My advice is this: next time you fix a bug or improve the resilience or performance of a database or application, make sure that you use team meetings, informal discussions and so on to ensure that people understand what the problem was and what you had to do to fix it. Use your blog to describe, generally, the process you adopted, the resources you used and the insights that came from your work. Encourage your colleagues to do the same. By spreading the art of self-promotion to everyone involved in an IT project, we get a better idea of the extent of the work and the value of the contribution of all the team members. As always, we'd love to hear what you think. This very week, Simple-talk launches its new blogging platform. If any of this has moved you to 'throw your hat into the ring', drop us a mail at [email protected]. Cheers, Tony.

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  • Which pattern is best for large project

    - by shamim
    I have several years of software development experience, but I am not a keen and adroit programmer, to perform better I need helping hands. Recently I engaged in an ERP project. For this project want a very effective structure, which will be easily maintainable and have no compromise about performance issue. Below structures are now present in my old projects. Entity Layer BusinessLogic Layer. DataLogic Layer UI Layer. Bellow picture describe how they are internally connected. For my new project want to change my project structure, I want to follow below steps: Core Layer(common) BLL DAL Model UI Bellow picture describe how they are internally connected. Though goggling some initial type question’s are obscure to me, they are : For new project want to use Entity framework, is it a good idea? Will it increase my project performance? Will it more maintainable than previous structure? Entity Framework core disadvantages/benefits are? For my project need help to select best structure. Will my new structure be better than the old one?

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  • Two graphical entities, smooth blending between them (e.g. asphalt and grass)

    - by Gabriel Conrad
    Supposedly in a scenario there are, among other things, a tarmac strip and a meadow. The tarmac has an asphalt texture and its model is a triangle strip long that might bifurcate at some point into other tinier strips, and suppose that the meadow is covered with grass. What can be done to make the two graphical entities seem less cut out from a photo and just pasted one on top of the other at the edges? To better understand the problem, picture a strip of asphalt and a plane covered with grass. The grass texture should also "enter" the tarmac strip a little bit at the edges (i.e. feathering effect). My ideas involve two approaches: put two textures on the tarmac entity, but that involves a serious restriction in how the strip is modeled and its texture coordinates are mapped or try and apply a post-processing filter that mimics a bloom effect where "grass" is used instead of light. This could be a terrible failure to achieve correct results. So, is there a better or at least a more obvious way that's widely used in the game dev industry?

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  • Backing up mail accounts without full access to mailserver

    - by Agos
    Hi everybody. I'm in the process of migrating some stuff from a (crappy) hosting. Files were easy with SSH access, but mail is giving me some thoughts. This is the situation: qmail server, no ssh access I own postmaster account accounts are accessible via web interface or POP3 I'm interested in transferring emails, but if whole accounts can be transferred it'd be better. Being POP3 I'm fairly confident every message has been downloaded, but of course I'd like to download the whole thing to be safer. Right now I have this in mind: Enter in web admin Change each account's password (it's only a dozen or so accounts so still feasible) Send new password to user telling him please not to change it getmail or something like that put on new IMAP server in some way (which I still haven't planned) But I feel there should be a better way to do this. Is there? Thanks in advance!

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  • What packages do I install for ffmpeg and libmp3lame?

    - by matt wilkie
    On my desktop Ubuntu 10.4 I use ffmpeg to convert videos to a format my dvd-player understands. On my laptop running 10.10 I can't get the same command to work, what package(s) are missing? ffmpeg -i infile.flv \ -threads 2 -vcodec mpeg4 -vtag divx -acodec libmp3lame -sameq \ outfile.avi #...snip Unknown encoder 'libmp3lame' Using apt-cache search libmp3lame I'm told there exist libmp3lame0 and libmp3lame-dev, both of which I've installed. Using acodec libmp3lame0 doesn't work either.

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  • Can't write to disk

    - by nofacts
    I have seen questions similar to this, but the answers are either beyond me or the situation doesn't quite match mine. Would appreciate some direction. I recently installed Ubuntu 12.04 LTS. The OS is on a disk formatted as ext4. I added another disk to the system and formatted it as W95 FAT 32 (LBA) (0x0c). I did this because I am moving from Windows to Linux, will be needing to go back and forth with data for a while, and might need to move the disk to a Windows machine. There may have been a better format to use, but if so I didn't know any better. I was able to transfer data from an external drive to this FAT32 drive with no problem. Now, though, when I try to create a new folder or write a file to the disk I get a message that the disk is read-only. If I go to the properties, permissions for the disk, for Folder Access it says 'create and delete files'. If I try to change File Access underneath to 'read and write', either nothing happens or I get a message it can't be done. Thank you for any help.

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  • How would you react if someone told you your code is a mess?

    - by newbie
    I am a good programmer, or so I thought before. I always love to program. And I want to learn many things about programming to make me a better programmer. I studied programming for 1 year and now I am working as a programmer for almost 2 years. So in short, I have almost 3 years programming experience. Our team is composed of 5 programmers, and 4 of us are new, 1 has more than 3 year experience. We've been working for a program for almost a year now and nobody ever review my code and I was given a page to work with. We never had a code review and we are all new so we don't know what is a clean code looks like. I think programmers learn by themselves? We deployed our program to the program without thorough testing. Now it is tight and we need an approval and code review first before we make changes with the code. For the first time, someone reviews my code and he says it is a mess. I feel so sad and hurt. I really love programming and making them say something like that really hurts me. I really want to improve myself. But it seems like I'm not a genius programmer like in the movies. Can you give me advise on how to be better? Have you ever experience something criticizing your code and you feel really hurt? What do you do on those events.. Thank you

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  • Tech Article: Tired of Null Pointer Exceptions? Use Java SE 8's Optional!

    - by Tori Wieldt
    A wise man once said you are not a real Java programmer until you've dealt with a null pointer exception. The null reference is the source of many problems because it is often used to denote the absence of a value. Java SE 8 introduces a new class called java.util.Optional that can alleviate some of these problems. In the tech article "Tired of Null Pointer Exceptions? Use Java SE 8's Optional!" Java expert Raoul-Gabriel Urma shows you how to make your code more readable and protect it against null pointer exceptions. Urma explains "The purpose of Optional is not to replace every single null reference in your codebase but rather to help design better APIs in which—just by reading the signature of a method—users can tell whether to expect an optional value. In addition, Optional forces you to actively unwrap an Optional to deal with the absence of a value; as a result, you protect your code against unintended null pointer exceptions." Learn how to go from writing painful nested null checks to writing declarative code that is composable, readable, and better protected from null pointer exceptions. Read "Tired of Null Pointer Exceptions? Use Java SE 8's Optional!"

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  • Acer Aspire One and Kernel 2.6.35-25 Freeze

    - by Nerdfest
    I'm having a problem with an Acer Aspire One netbook after the latest kernel upgrade. Basically, doing anything relating to an external monitor locks the trackpad, and in some cases, the keyboard as well. This lock will continue in Gnome even after reboots, and requires battery removal to fix. It does work in the graphical login manager up until the problem occurs the first time. And ideas on settings, etc, that I can change to make it work again?

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  • Need alternative to Accessibility's "Locate Pointer" to visually highlight the mouse.

    - by fred.bear
    Update: See end of quetion: A black-on-white cross-hair/I-bar mouse-pointer is soemtimes hard foe me to spot in amongst black-on-white text. I've tried "Accessibility / Mouse Accessibility / Locate Pointer" .. which will: Show pointer position when Control is presssed It works (to a point), but it does have a notable problem, which renders it inpractical. It has the uncanny side-effect of disallowing all Control key navigation while editing a file/dir name in Nautilus (F2).. Just touching the Control key drops it out of edit mode, which means I can't keyboard paste, move-L/R word etc... So, I'm looking for an alternative. I've tried Compiz's Water Effect, but I need something which is sharper, faster, and localized to the pointer. Compiz's Show Mouse (with fire) is no suitable. I'm really lookingf for an analog of "Accessibility / Locate Pointer": * ie. I hit Control (only).. and it blips a quick visual pulse. UPDATE: I've just realized why I can't find my mouse so often! ... It's because it is isn't there !!! ... Two apps I use a lot, Gedit and Konsole (KDE Terminal; it renders unicode better), ... dissolve the mouse-pointer to invisible after the first key is typed ... and Konsole does it after a few seconds of idle-time... like a video-player option: "hide the mouse".. Well I don't use the mouse much, and I thought it was juse my eyesight (which does rely a lot on Compiz's zoom)... I discovered it when I installed a "novelty" app, called Geyes from gnome-applets ("A goofy set of eyes for the GNOME panel. They follow your mouse.") ... It could follow the mouse better than me! :)

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  • Overloading methods that do logically different things, does this break any major principles?

    - by siva.k
    This is something that's been bugging me for a bit now. In some cases you see code that is a series of overloads, but when you look at the actual implementation you realize they do logically different things. However writing them as overloads allows the caller to ignore this and get the same end result. But would it be more sound to name the methods more explicitly then to write them as overloads? public void LoadWords(string filePath) { var lines = File.ReadAllLines(filePath).ToList(); LoadWords(lines); } public void LoadWords(IEnumerable<string> words) { // loads words into a List<string> based on some filters } Would these methods better serve future developers to be named as LoadWordsFromFile() and LoadWordsFromEnumerable()? It seems unnecessary to me, but if that is better what programming principle would apply here? On the flip side it'd make it so you didn't need to read the signatures to see exactly how you can load the words, which as Uncle Bob says would be a double take. But in general is this type of overloading to be avoided then?

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  • How to be successful at BDD Specifications Workshops?

    - by sigo
    Today we tried to introduce BDD in our software development process by having a specification workshop. For this workshop we had 2 developers, 1 tester and 1 business analyst. The workshop lasted 1h30 and by the end of it we managed to figure out some BDD scenarios for our new feature. We tried to focus on finding the scenarios that we could miss, and the difficult ones. At the end of the workshop some people were actually unhappy with the workshop. One developer felt he wasted his time as he was used to be given out the scenarios directly by the business analyst and review them with her. The business analyst didn't feel confident with our scenario coverage (Had a feeling that we could have missed out other important stuff) but more importantly felt that this workshop was also a waste of time as she could have figured out all these scenarios by herself and in a shorter period of time. So my question is how that kind of workshop can actually work. In the theory, given you have a new feature to develop, you put the tree 'amigos' (dev/tester/ba) in the same room so that they can collaborate together on writing the differents requirements for the new feature using examples. I can see all the benefits from that. Specially in term of knowledge sharing and common product/end goal/done vision. But in practice, we still think it is more cost effective to first have a BA to work on his own on the examples and only then to have the scenarios to be reviewed/reworked by the 3 'amigos'. By having the BA to work on his own, we actually feel more confident that we are less going to miss out stuff + we still get to review the scenarios afterward to double check. We don't think than simple brainstorming/deliberate discovery is actually enought to seriously cover all the requirement for a feature. The business analyst is actually the best person for that kind of stuff. The thing we just do is to review what she wrote and see if then we have a common understanding (which could then lead to rewrite some of her scenarios or add new ones she could have missed). This workshop lasted 1h30, and by the end of it, we didn't feel confident enought about wha we did...sure we could have spent more time on it but honestly most people get exhausted after 1h30 of brainstorming. So how can you get that to work effectively in practice ?

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  • How to store prices that have effective dates?

    - by lal00
    I have a list of products. Each of them is offered by N providers. Each providers quotes us a price for a specific date. That price is effective until that provider decides to set a new price. In that case, the provider will give the new price with a new date. The MySQL table header currently looks like: provider_id, product_id, price, date_price_effective Every other day, we compile a list of products/prices that are effective for the current day. For each product, the list contains a sorted list of the providers that have that particular product. In that way, we can order certain products from whoever happens to offer the best price. To get the effective prices, I have a SQL statement that returns all rows that have date_price_effective >= NOW(). That result set is processed with a ruby script that does the sorting and filtering necessary to obtain a file that looks like this: product_id_1,provider_1,provider_3,provider8,provider_10... product_id_2,provider_3,provider_2,provider1,provider_10... This works fine for our purposes, but I still have an itch that a SQL table is probably not the best way to store this kind of information. I have that feeling that this kind of problema has been solved previously in other more creative ways. Is there a better way to store this information other than in SQL? or, if using SQL, is there a better approach than the one I'm using?

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  • When to use PHP or ASP.NET? [closed]

    - by loyalpenguin
    I have worked extensively in developing web applications using PHP and ASP.NET, but one of the questions that I'm constantly asked by customers is whether to move forward with a php website or an asp.net website. So naturally the first thing that comes to mind is to answer the question like this: PHP is open-source and ASP.NET is from Microsoft. Usually after something like that is said the customer has a blank look on there face. Apparently the fact that one is open source and the other isn't doesn't really faze them. And for good reason, because when I first heard it, it really doesn't tell me much. I know from working with both that each have their + and - when it comes to developing websites. NOTE: THIS QUESTION IS NOT TO QUESTION WHICH IS BETTER TO DEVELOP WITH. THIS QUESTION IS INTENDED TO BE OBJECTIVE. My question is what are differences between ASP.NET and PHP as far as Features Security Extendability Frameworks Average Development Time And when one is generally used over the other for certain types of projects. I am trying to compile a list of facts to be able to compare with the customer what developement platform is better for there particular project. I have done a simple search on google and a ton of articles come up, but the problem is the majority are usually biased towards PHP or ASP.NET. Also if you can maybe provide examples from experience when one technology was more preferable than the other that would be awesome.

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  • Best memory-efficient web browser for Ubuntu?

    - by Steve K
    I've installed Ubuntu 10.10 on an old laptop with only 756 MB of RAM, Pentium M 1.6 processor. I'm using Google Chrome 11.0 (dev channel) for web browsing, and it appears to be using up most of my memory and processor time. Does anyone know of a better browser than Chrome on Ubuntu, for an older computer like mine? I'm new to Ubuntu, so there may also be tweaks I can make to my existing system to have it perform better. But right now it's pretty slow when I've got ~5-10 tabs open. Related question: memory-efficient web-browser

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  • Setting up 2 external monitors on a laptop with VGA splitter

    - by mike
    I have a laptop with a graphics card that supports 2 displays. I would like to know the easiest way to set it up so I can close my laptop lid and use 2 external monitors (unique displays). I use it primarily for office applications and video and want a quality, clear picture. The laptop has 1 VGA port and I have 2 24" 1920x1200 monitors that have VGA and DVI ports. So a few questions: Can I just use a VGA splitter? (seen mixed feedback on this) Would it a VGA to 2 DVI splitter give a better picture quality? (if it exists) Would I be better upgrading laptop to one with 2 digital ports ( I just see a lot with VGA and HDMI though) specs: Model: Toshiba Satellite C675-S106 (Windows 7) Graphics Card: Intel HD Graphics 3000 (supports 2 displays) Processor: Intel Core i3-2350M

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  • Whether to separate out methods or not

    - by Skippy
    I am new to java and want to learn best coding practices and understand why one method is better than another, in terms of efficiency and as the coding becomes more complicated. This is just an example, but I can take the principles from here to apply elsewhere. I have need an option to display stuff, and have put the method stuff separately from the method to ask if the user wants to display the stuff, as stuff has a lot of lines of code. For readability I have done this: public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { stuff (); } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } private static String stuff () { //to lots of things here return stuff (); } Or public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { //to lots of things here stuff; } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } Is it better to keep them together and why? Also, should the second method be private or public, if I am asking for data within the class? I am not sure if this is on topic for here. please advise.

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  • Semantic coupling vs. large class

    - by user106587
    I have hardware I communicate with via TCP. This hardware accepts ~40 different commands/requests with about 20 different responses. I've created a HardwareProxy class which has a TcpClient to send and receive data. I didn't like the idea of having 40 different methods to send the commands/requests, so I started down the path of having a single SendCommand method which takes an ICommand and returns an IResponse, this results in 40 different SpecificCommand classes. The problem is this requires semantic coupling, i.e. the method that invokes SendCommand receives an IResponse which it has to downcast to SpecificResponse, I use a future map which I believe ensures the appropriate SpecificResponse, but I get the impression this code smells. Besides the semantic coupling, ICommand and IResponse are essentially empty abstract classes (Marker Interfaces) and this seems suspicious to me. If I go with the 40 methods I don't think I have broken the single responisbility principle as the responsibility of the HardwareProxy class is to act as the hardware, which has all of these commands. This route is just ugly, plus I'd like to have Asynchronous versions, so there'd be about 80 methods. Is it better to bite the bullet and have a large class, accept the coupling and MarkerInterfaces for a smaller soultuion, or am I missing a better way? Thanks.

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  • Paging problem in Data Form Webpart SP2010

    - by Patrick Olurotimi Ige
    I was working on some webpart in sharepoint designer 2010  and i decided to use the default custom paging.But i noticed the previous link page isn't working it basicalling just takes me back to the start page of the list and not the previous page after a good look i noticed micosoft is using "history.back()" which is suppose to work but it doesn't work well for paged data.Anyway before i started further investigation i found Hani Amr's solution at the right time and that did the trick.Hope that helps

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