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• Is return-type-(only)-polymorphism in Haskell a good thing?

  - by dainichi

  One thing that I've never quite come to terms with in Haskell is how you can have polymorphic constants and functions whose return type cannot be determined by their input type, like class Foo a where foo::Int -> a Some of the reasons that I do not like this: Referential transparency: "In Haskell, given the same input, a function will always return the same output", but is that really true? read "3" return 3 when used in an Int context, but throws an error when used in a, say, (Int,Int) context. Yes, you can argue that read is also taking a type parameter, but the implicitness of the type parameter makes it lose some of its beauty in my opinion. Monomorphism restriction: One of the most annoying things about Haskell. Correct me if I'm wrong, but the whole reason for the MR is that computation that looks shared might not be because the type parameter is implicit. Type defaulting: Again one of the most annoying things about Haskell. Happens e.g. if you pass the result of functions polymorphic in their output to functions polymorphic in their input. Again, correct me if I'm wrong, but this would not be necessary without functions whose return type cannot be determined by their input type (and polymorphic constants). So my question is (running the risk of being stamped as a "discussion quesion"): Would it be possible to create a Haskell-like language where the type checker disallows these kinds of definitions? If so, what would be the benefits/disadvantages of that restriction? I can see some immediate problems: If, say, 2 only had the type Integer, 2/3 wouldn't type check anymore with the current definition of /. But in this case, I think type classes with functional dependencies could come to the rescue (yes, I know that this is an extension). Furthermore, I think it is a lot more intuitive to have functions that can take different input types, than to have functions that are restricted in their input types, but we just pass polymorphic values to them. The typing of values like [] and Nothing seems to me like a tougher nut to crack. I haven't thought of a good way to handle them. I doubt I am the first person to have had thoughts like these. Does anybody have links to good discussions about this Haskell design decision and the pros/cons of it?

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• So Much Happening at Devoxx

  - by Tori Wieldt

  Devoxx, the premier Java conference in Europe, has been sold out for a while. The organizers (thanks Stephan and crew!) cap the attendance to make sure all attendees have a great experience, and that speaks volumes about their priorities. The speakers, hackathons, labs, and networking are all first class. The Oracle Technology Network will be there, and if you were smart/lucky enough to get a ticket, come find us and join the fun: IoT Hack Fest Build fun and creative Internet of Things (IoT) applications with Java Embedded, Raspberry Pi and Leap Motion on the University Days (Monday and Tuesday). Learn from top experts Yara & Vinicius Senger and Geert Bevin at two Raspberry Pi & Leap Motion hands-on labs and hacking sessions. Bring your computer. Training and equipment will be provided. Devoxx will also host an Internet of Things shop in the exhibition floor where attendees can purchase Arduino, Raspberry PI and Robot starter kits. Bring your IoT wish list! Video Interviews Yolande Poirier and I will be interviewing members of the Java Community in the back of the Expo hall on Wednesday and Thursday. Videos are posted on Parleys and YouTube/Java. We have a few slots left, so contact me (you can DM @Java) if you want to share your insights or cool new tip or trick with the rest of the developer community. (No commercials, no fluff. Keep it techie and keep it real.)  Oracle Keynote Wednesday morning Mark Reinhold, Chief Java Platform Architect, and Brian Goetz, Java Language Architect will provide an update on Java 8 and beyond. Oracle Booth Drop by the Oracle booth to see old and new friends.  We'll have Java in Action demos and the experts to explain them and answer your questions. We are raffling off Raspberry Pi's each day, so be sure to get your badged scanned. We'll have beer in the booth each evening. Look for @Java in her lab coat.  See you at Devoxx! 

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• Should library classes be wrapped before using them in unit testing?

  - by Songo

  I'm doing unit testing and in one of my classes I need to send a mail from one of the methods, so using constructor injection I inject an instance of Zend_Mail class which is in Zend framework. Example: class Logger{ private $mailer; function __construct(Zend_Mail $mail){ $this->mail=$mail; } function toBeTestedFunction(){ //Some code $this->mail->setTo('some value'); $this->mail->setSubject('some value'); $this->mail->setBody('some value'); $this->mail->send(); //Some } } However, Unit testing demands that I test one component at a time, so I need to mock the Zend_Mail class. In addition I'm violating the Dependency Inversion principle as my Logger class now depends on concretion not abstraction. Does that mean that I can never use a library class directly and must always wrap it in a class of my own? Example: interface Mailer{ public function setTo($to); public function setSubject($subject); public function setBody($body); public function send(); } class MyMailer implements Mailer{ private $mailer; function __construct(){ $this->mail=new Zend_Mail; //The class isn't injected this time } function setTo($to){ $this->mailer->setTo($to); } //implement the rest of the interface functions similarly } And now my Logger class can be happy :D class Logger{ private $mailer; function __construct(Mailer $mail){ $this->mail=$mail; } //rest of the code unchanged } Questions: Although I solved the mocking problem by introducing an interface, I have created a totally new class Mailer that now needs to be unit tested although it only wraps Zend_Mail which is already unit tested by the Zend team. Is there a better approach to all this? Zend_Mail's send() function could actually have a Zend_Transport object when called (i.e. public function send($transport = null)). Does this make the idea of a wrapper class more appealing? The code is in PHP, but answers doesn't have to be. This is more of a design issue than a language specific feature

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• How / Where can I host my Java web application? [closed]

  - by Huliax

  Possible Duplicate: How to find web hosting that meets my requirements? In case you want to skip to the crux of my inquiry just read the bold type. I just finished my CS degree (at 39 years old :-)). For my final project I designed and built a system that can provide local positioning / location awareness to mobile wifi devices (only have Android client thus far). The server receives data from clients, processes it, and responds to the clients with a messages containing information about their respective locations. I would like to continue the project (perhaps release as open source but that is a different discussion). Thus far my server application has been running on the CS department's hardware where I could pretty much do whatever I wanted. I'm getting kicked off that system in a few weeks so I have to find a new home for my server application. I need a host that will let me run my Java server (along w/ mySQL db) -- preferably on the cheap since I haven't yet got a job. I have very little experience with the "real world" of web development / hosting. I'm having trouble figuring out what kind of hosting service will let me run my application as is. If that turns out to be a tall order then I need to know what my options are for changing thing so that I can get up and running with some hosting. As an aside, I'm also researching whether or not I should rewrite this in a different language. Trying to figure out if there is a substantially better (for whatever reason) one for what I'm doing. This might also potentially have a bearing on my hosting needs. One possibility is to write the server in something more widely accepted by hosting services. I have been searching for answers to my question and haven't found quite what I'm looking for. Part of the problem might be that I don't know exactly what terminology to use. If there is a good answer to this question elsewhere please feel free to point me towards it. Thanks for help / advice.

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• Restructuring a large Chrome Extension/WebApp

  - by A.M.K

  I have a very complex Chrome Extension that has gotten too large to maintain in its current format. I'd like to restructure it, but I'm 15 and this is the first webapp or extension of it's type I've built so I have no idea how to do it. TL;DR: I have a large/complex webapp I'd like to restructure and I don't know how to do it. Should I follow my current restructure plan (below)? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? While it isn't relevant to the question, the actual code is on Github and the extension is on the webstore. The basic structure is as follows: index.html <html> <head> <link href="css/style.css" rel="stylesheet" /> <!-- This holds the main app styles --> <link href="css/widgets.css" rel="stylesheet" /> <!-- And this one holds widget styles --> </head> <body class="unloaded"> <!-- Low-level base elements are "hardcoded" here, the unloaded class is used for transitions and is removed on load. i.e: --> <div class="tab-container" tabindex="-1"> <!-- Tab nav --> </div> <!-- Templates for all parts of the application and widgets are stored as elements here. I plan on changing these to <script> elements during the restructure since <template>'s need valid HTML. --> <template id="template.toolbar"> <!-- Template content --> </template> <!-- Templates end --> <!-- Plugins --> <script type="text/javascript" src="js/plugins.js"></script> <!-- This contains the code for all widgets, I plan on moving this online and downloading as necessary soon. --> <script type="text/javascript" src="js/widgets.js"></script> <!-- This contains the main application JS. --> <script type="text/javascript" src="js/script.js"></script> </body> </html> widgets.js (initLog || (window.initLog = [])).push([new Date().getTime(), "A log is kept during page load so performance can be analyzed and errors pinpointed"]); // Widgets are stored in an object and extended (with jQuery, but I'll probably switch to underscore if using Backbone) as necessary var Widgets = { 1: { // Widget ID, this is set here so widgets can be retreived by ID id: 1, // Widget ID again, this is used after the widget object is duplicated and detached size: 3, // Default size, medium in this case order: 1, // Order shown in "store" name: "Weather", // Widget name interval: 300000, // Refresh interval nicename: "weather", // HTML and JS safe widget name sizes: ["tiny", "small", "medium"], // Available widget sizes desc: "Short widget description", settings: [ { // Widget setting specifications stored as an array of objects. These are used to dynamically generate widget setting popups. type: "list", nicename: "location", label: "Location(s)", placeholder: "Enter a location and press Enter" } ], config: { // Widget settings as stored in the tabs object (see script.js for storage information) size: "medium", location: ["San Francisco, CA"] }, data: {}, // Cached widget data stored locally, this lets it work offline customFunc: function(cb) {}, // Widgets can optionally define custom functions in any part of their object refresh: function() {}, // This fetches data from the web and caches it locally in data, then calls render. It gets called after the page is loaded for faster loads render: function() {} // This renders the widget only using information from data, it's called on page load. } }; script.js (initLog || (window.initLog = [])).push([new Date().getTime(), "These are also at the end of every file"]); // Plugins, extends and globals go here. i.e. Number.prototype.pad = .... var iChrome = function(refresh) { // The main iChrome init, called with refresh when refreshing to not re-run libs iChrome.Status.log("Starting page generation"); // From now on iChrome.Status.log is defined, it's used in place of the initLog iChrome.CSS(); // Dynamically generate CSS based on settings iChrome.Tabs(); // This takes the tabs stored in the storage (see fetching below) and renders all columns and widgets as necessary iChrome.Status.log("Tabs rendered"); // These will be omitted further along in this excerpt, but they're used everywhere // Checks for justInstalled => show getting started are run here /* The main init runs the bare minimum required to display the page, this sets all non-visible or instantly need things (such as widget dragging) on a timeout */ iChrome.deferredTimeout = setTimeout(function() { iChrome.deferred(refresh); // Pass refresh along, see above }, 200); }; iChrome.deferred = function(refresh) {}; // This calls modules one after the next in the appropriate order to finish rendering the page iChrome.Search = function() {}; // Modules have a base init function and are camel-cased and capitalized iChrome.Search.submit = function(val) {}; // Methods within modules are camel-cased and not capitalized /* Extension storage is async and fetched at the beginning of plugins.js, it's then stored in a variable that iChrome.Storage processes. The fetcher checks to see if processStorage is defined, if it is it gets called, otherwise settings are left in iChromeConfig */ var processStorage = function() { iChrome.Storage(function() { iChrome.Templates(); // Templates are read from their elements and held in a cache iChrome(); // Init is called }); }; if (typeof iChromeConfig == "object") { processStorage(); } Objectives of the restructure Memory usage: Chrome apparently has a memory leak in extensions, they're trying to fix it but memory still keeps on getting increased every time the page is loaded. The app also uses a lot on its own. Code readability: At this point I can't follow what's being called in the code. While rewriting the code I plan on properly commenting everything. Module interdependence: Right now modules call each other a lot, AFAIK that's not good at all since any change you make to one module could affect countless others. Fault tolerance: There's very little fault tolerance or error handling right now. If a widget is causing the rest of the page to stop rendering the user should at least be able to remove it. Speed is currently not an issue and I'd like to keep it that way. How I think I should do it The restructure should be done using Backbone.js and events that call modules (i.e. on storage.loaded = init). Modules should each go in their own file, I'm thinking there should be a set of core files that all modules can rely on and call directly and everything else should be event based. Widget structure should be kept largely the same, but maybe they should also be split into their own files. AFAIK you can't load all templates in a folder, therefore they need to stay inline. Grunt should be used to merge all modules, plugins and widgets into one file. Templates should also all be precompiled. Question: Should I follow my current restructure plan? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? Do applications written with Backbone tend to be more intensive (memory and speed) than ones written in Vanilla JS? Also, can I expect to improve this with a proper restructure or is my current code about as good as can be expected?

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• How can I create a flexible system for tiling a 2D RPG map?

  - by CptSupermrkt

  Using libgdx here. I've just finished learning some of the basics of creating a 2D environment and using an OrthographicCamera to view it. The tutorials I went through, however, hardcoded their tiled map in, and none made mention of how to do it any other way. By tiled map, I mean like Final Fantasy 1, where the world map is a grid of squares, each with a different texture. So for example, I've got a 6 tile x 6 tile map, using the following code: Array<Tile> tiles = new Array<Tile>(); tiles.add(new Tile(new Vector2(0,5), TileType.FOREST)); tiles.add(new Tile(new Vector2(1,5), TileType.FOREST)); tiles.add(new Tile(new Vector2(2,5), TileType.FOREST)); tiles.add(new Tile(new Vector2(3,5), TileType.GRASS)); tiles.add(new Tile(new Vector2(4,5), TileType.STONE)); tiles.add(new Tile(new Vector2(5,5), TileType.STONE)); //... x5 more times. Given the random nature of the environment, for loops don't really help as I have to start and finish a loop before I was able to do enough to make it worth setting up the loop. I can see how a loop might be helpful for like tiling an ocean or something, but not in the above case. The above code DOES get me my final desired output, however, if I were to decide I wanted to move a piece or swap two pieces out, oh boy, what a nightmare, even with just a 6x6 test piece, much less a 1000x1000 world map. There must be a better way of doing this. Someone on some post somewhere (can't find it now, of course) said to check out MapEditor. Looks legit. The question is, if that is the answer, how can I make something in MapEditor and have the output map plug in to a variable in my code? I need the tiles as objects in my code, because for example, I determine whether or not a tile is can be passed through or collided with based on my TileTyle enum variable. Are there alternative/language "native" (i.e. not using an outside tool) methods to doing this?

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• Working for Web using open-source Technologies

  - by anirudha

  As a Web Developer we all have own dream to make a great web application. a great application was built upon high discipline and best practice on the process of development then we can make modification easier in future as if we want. the user feedback also have a matter because they tell us what they want or expected with the application we make day and night. sometime they report a nice story , experience or a problem they got with our application. so that's matter because they telling about our application much more because they use our software and a part of process of future development or next version of application we make. so the Web have a good thing that they updated as soon as possible. in desktop application their is a numbers of trouble client have when they want to use our application. first thing that installation of software never goes right on every system. big company spent a big amount of money to troble these problem the user have with their software.   Web application is nice implementation of application because their is no trouble with installation all have same experience and if something goes wrong patch come soon and no waiting for new version. Chrome even a desktop application [browser] but they automatically update themselves so their is no trouble for user to get next version now hasseles.    Web application development in Microsoft way have their own rule , pattern practice to make better application in less time. the technologies i want to show you here is some great opensource example like MySQL jQuery and ASP.NET MVC a framework based on ASP.NET server side language.   For going to next step we need to show you a list of software you need to have to fully experience this tutorial.   Visual Web Developer 2010 Express Edition  MySQL [open-source RDBMS]   Query [open-source javascript library]   for getting these software you need to pay nothing.   Visual Web Developer can obtained from Microsoft.com/Express or if you are student or Web Developer you are eligible to get the Visual studio professional and many other great software from Microsoft through their Dreamspark or WebsiteSpark programmes.   MySQL is a great Relational Database management software who are freely available from MySQL.com as a database monitorting tool you can use MySQL workbrench who can be freely get from MySQL official website or many other free tool are available for begining development with MySQL   jQuery is a great library for making javascipt development easier and faster.you can obtained jQuery from jQuery.com their official website.

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• The difference

  So with the CTP tools available, weve been building a few apps, just to get a feel for the tools and whats supported in the framework.  Whats been great is that everything is fairly familiar and consistent, largely to do with the .net framework and Microsofts focus on providing good tools.  Weve produced mobile applications, mostly in concept form, for Windows Phone Classic, iPhone and Android but never so quickly and not of such high quality and visual impression.  I attribute some of this obviously to our familiarity to the Microsoft platform and tools.  Though when you look at the designs our team has produced, it becomes clear that this is not just another mobile application container.                                                            The Metro design language implores content prominence with fluid motion and transitions, with a crisp font and easily organized features and services placement.  In addition to a purposeful right edge tease, where the intent is for users to discover new premium content and services.   The concept that enables this is called hubs, building application with hubs changes your thinking from a single mobile application task, to thinking creatively about a mobile experience. Its engaging to think of the other brands and industry verticals that will take advantage of this core feature.  Combine this with Windows Phone 7 live tiles, more on that later, and you have a recipe for a solid mobile services platform.                                                              This so much more fun and liberating than my icon on a gridDid 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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• Lockdown users on Windows Server 2012

  - by el.severo

  I set up a Active Directory on a server machine with Windows Server 2012 and I'd like to create some users with limitations like Windows Steady State does in Windows XP (locally). Seen already the Windows SteadyState Handbook (with Windows Server 2008), but I'd like to know if anyone has tried this before, the limitations are the following: 1. Prevent locked or roaming user profiles that cannot be found on the computer from logging on 2. Do not cache copies of locked or roaming user profiles for users who have previously logged on to this computer 3. Do not allow Windows to compute and store passwords using LAN Manager Hash values 4. Do not store usernames or passwords used to log on to the Windows Live ID or the domain 5. Prevent users from creating folders and files on drive C:\ 6. Lock profile to prevent the user from making permanent changes 7. Remove the Control Panel, Printer and Network Settings from the Classic Start menu 8. Remove the Favorites icon 9. Remove the My Network Places icon 10. Remove the Frequently Used Program list 11. Remove the Shared documents folder from My Computer 12. Remove control Panel icon 13. Remove the Set Program Access and Defaults icon 14. Remove the Network Connection(Connect To)icon 15. Remove the Printers and Faxes icon 16. Remove the Run icon 17. Prevent access to Windows Explorer features: Folder Options, Customize Toolbar, and the Notification Area 18. Prevent access to the taskbar 19. Prevent access to the command prompt 20. Prevent access to the registry editor 21. Prevent access to the Task Manager 22. Prevent access to Microsoft Management Console utilities 23. Prevent users from adding or removing printers 24. Prevent users from locking the computer 25. Prevent password changes (also requires the Control Panel icon to be removed) 26. Disable System Tools and other management programs 27. Prevent users from saving files to the desktop 28. Hide A Drive 29. Hide B Drive 30. Hide C Drive 31. Prevent changes to Internet Explorer registry settings 32. Empty the Temporary Internet Files folder when Internet Explorer is closed 33. Remove Internet Options 34. Remove General tab in Internet Options 35. Remove Security tab in Internet Options 36. Remove Privacy tab in Internet Options 37. Remove Content tab in Internet Options 38. Remove Connections tab in Internet Options 39. Remove Programs tab in Internet Options 40. Remove Advanced tab in Internet Options 41. Set a home page (Internet Explorer) 42. Restrict the possibility to change desktop image 43. Restrict the possibility to change wallpaper 44. Restrict usb flash drives Any suggestions for this? UPDATE: As @Dan suggested me I'd like to specify that would be applied to a educational scenario where students can login from a computer and want to add some restrictions to them.

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• Boot error aftter clean Ubuntu 13.04 install: [Reboot and select proper boot device]

  - by IcarusNM

  I am having the same problem as this guy where a fresh Ubuntu install completes beautifully but will not boot. I get the ASUS (?) "Reboot and select proper boot device" error, first with Xubuntu 13.10 and after finally giving up there, and Xubuntu 13.4, I am back to regular Ubuntu 13.4. ASUS motherboard Z77, Intel chipset. Standard internal SATA 500GB HD. 64-bit. All-new hardware less than 3 months old. It was running Ubuntu 12.04LTC great until I tried this upgrade. I have re-installed from scratch every which way: with LVM, without LVM; with the default partitions, with my own partitions. With ext3 or ext4. Alongside; replace; upgrade. No difference. On the last two tries, I have booted afterward from the same USB stick, downloaded and run boot-repair, and now I guess I am off to the boot-repair support email with my URLs from that. It did all kinds of cool stuff but ultimately made no difference. I never got anything like this with Ubuntu 12.04. I've now probably re-installed Ubuntu 13.04 ten times slightly different ways. I finally found how to skip the language packs, so at least that sped things up! :) This starts from the ubuntu-13.04-desktop-amd64.iso and UNetbootin as suggested on the official instructions for USB thumb drive creation from OSX. That part all works fine (booting the USB on the PC and trying Ubuntu and/or installing from there on the PC HD.) I have no CD drive on this PC, but I suppose I could get one. I would rather find some Linux install that works from USB like I've always done. After running boot-repair twice, in the ASUS BIOS I now see three different UEFI boot options in the priority list, and they are all labeled exactly the same: ubuntu (P6: WDC WD5000AAKX-00U6AA0) Then there's a non-UEFI option: P6: WDC WD5000AAKX-00U6AA0 (476940MB) And a fifth option appeared after the first boot-repair: Windows Boot Manager (P6: WDC WD5000AAKX-00U6AA0) I have tried all 5 of these, and I get exactly the same error. I have never had Windows installed on this HD. ASUS is calling it Windows Boot Manaer but I presume that's a mistaken label for whatever boot-repair did. I can boot on USB and run GParted and it looks great. The partitions all look normal. I found another case of this online with no solution posted. I can't find much about it online. Needs a Master Boot Record wipe/redo?? I'm not sure how.

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• reference list for non-IT driven algorithmic patterns

  - by Quicker

  I am looking for a reference list for non-IT driven algorithmic patterns (which still can be helped with IT implementations of IT). An Example List would be: name; short desc; reference Travelling Salesman; find the shortest possible route on a multiple target path; http://en.wikipedia.org/wiki/Travelling_salesman_problem Ressource Disposition (aka Regulation); Distribute a limited/exceeding input on a given number output receivers based on distribution rules; http://database-programmer.blogspot.de/2010/12/critical-analysis-of-algorithm-sproc.html If there is no such list, but you instantly think of something specific, please 'put it on the desk'. Maybe I can compile something out of the input I get here (actually I am very frustrated as I did not find any such list via research by myself). Details on Scoping: I found it very hard to formulate what I want in a way everything is out that I do not need (which may be the issue why I did not find anything at google). There is a database centric definition for what I am looking for in the section 'Processes' of the second example link. That somehow fits, but the database focus sort of drifts away from the pattern thinking, which I have in mind. So here are my own thoughts around what's in and what's out: I am NOT looking for a foundational algo ref list, which is implemented as basis for any programming language. Eg. the php reference describes substr and strlen. That implements algos, but is not what I am looking for. the problem the algo does address would even exist, if there were no computers (or other IT components) the main focus of the algo is NOT to help other algo's chances are high, that there are implementions of the solution or any workaround without any IT support out there in the world however the algo could be benefitialy implemented/fully supported by a software application = means: the problem of the algo has to be addressed anyway, but running an algo implementation with software automates the process (that is why I posted it on stackoverflow and not somewhere else) typically such algo implementations have more than one input field value and more than one output field value - which implies it could not be implemented as simple function (which is fixed to produce not more than one output value) in a normalized data model often times such algo implementation outputs span accross multiple rows (sometimes multiple tables), whereby the number of output rows depends on the input paraters and rows in the table(s) at start time - which implies that any algo implementation/procedure must interact with a database (read and/or write) I am mainly looking for patterns, not for specific implementations. Example: The Travelling Salesman assumes any coordinates, however it does not say: You need a table targets with fields x and y. - however sometimes descriptions are focussed on examples with specific implementations very much - no worries, as long as the pattern gets clear

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• Encapsulating code in F# (Part 1)

  - by MarkPearl

  I have been looking at F# for a while now and seem a few really interesting samples and snippets on howto’s. This has been great to see the basic outline of the language and the possibilities, however a nagging question in the back of my mind has been what does an F# project look like? How do I code group code in F# so that it can be modularized and brought in and out of a project easily? My Expert F# book has an entire chapter (7) dedicated to this and after browsing the other chapters of the book I decided that this topic was something I really wanted to know more about now! Because of my C# background I keep trying to think in F# of objects. So to try and get a clearer idea of how to do things the F# way I am first going to take a very simplified C# example and try to “translate” it. using System; namespace ConsoleApplication1 { namespace ExampleOfEncapsulationInCSharp { class Program { static void EncapsulatedVariableInAMethod() { int count = 10; Console.WriteLine(count); } static void Main(string[] args) { EncapsulatedVariableInAMethod(); Console.ReadLine(); } } } } From the above example the count integer is encapsulated within EncapsulatedVariableInAMethod method. You couldn’t access the count variable from outside the scope of its parent method but have full access to it within the method. Lets look at my F# equivalent… open System let EncapsulatedVariableInAMethod = let count = 10 Console.WriteLine(count) () EncapsulatedVariableInAMethod Console.ReadLine()   Now, when I first attempted to write the F# code I got stuck… I didn’t have the Console.WriteLine calls but had the following… open System let EncapsulatedVariableInAMethod = let count = 10 EncapsulatedVariableInAMethod Console.ReadLine()   The compiler didn’t like the let before the count = 10. This is because every F# expression must evaluate to a value. If I did not want to make the Console call, I would still need to evaluate the expression to something – and for this reason the Unit Type is provided. I could have done something like…. open System let EncapsulatedVariableInAMethod = let count = 10 () EncapsulatedVariableInAMethod Console.ReadLine()   Which the compiler would be happy with…

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• Employer admits that its developers are underpaid and undervalued. Time to part ways?

  - by Psionic

  My employer recently posted an opening for a C# Developer with 3-5 years of experience. The requirements and expectations for the position were fair, up until the criteria for salary determination. It was stated clearly that compensation would depend ONLY on experience with C#, and that years of programming experience with other languages & frameworks would be considered irrelevant and not factored in. I brought up my concern with HR that good candidates would see this as a red flag and steer away. I attempted to explain that software development is about much more than specific languages, and that paying someone for their experience in a single language is a very shortsighted approach to hiring good developers (I'm telling this to the HR dept of a software company). The response: "We are tired of wasting time interviewing developers who expect 'big salaries' because they have lots of additional programming experience in languages other than what we require." The #1 issue here is that 'big salaries' = Market Rate. After some serious discussion, they essentially admitted that nobody at the company is paid near market rate for their skills, and there's nothing that can be done about it. The C-suite has the mentality that employees should only be paid for skills proven over years under their watch. Entry-level developers are picked up for less than $38K and may reach 50K after 3 years, which I'm assuming is around what they plan on offering candidates for the C# position. Another interesting discovery (not as relevant) - people 'promoted' to higher responsibilities do not get raises. The 'promotion' is considered an adjustment of the individuals' roles to better suit their 'strengths', which is what they're already being paid for. After hearing these hard truths straight from HR, I would assume that most people who are looking out for themselves would quickly begin searching for a new employer that has a better idea of what they're doing in the industry (this company fails in many other ways, but I don't want to write a book). Here is my dilemma however: This is the first official software development position I've held, for barely 1 year now. My previous position of 3 years was with a very small company where I performed many duties, among them software development (not in my official job description, but I tried very hard to make it so). I've identified local openings that I'm currently qualified for, most paying at least 50% more than I'm getting now. Question is, is it too soon for a jump? I am getting valuable experience in my current position, with no shortage of exciting projects. The work environment is very comfortable, and I'm told by many that I'm in the spotlight of the C-level guys for the stuff that I've been able to accomplish during my short time (for what that's worth). However, there is a clear opportunity cost to staying, knowing now with certainty that I will have to wait 3-5 years only to be capped at what I could potentially be earning elsewhere this year. I am also aware that 'job hopper' is a dangerous label to have, regardless of the reasons.

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• Keeping the meshes "thickness" the same when scaling an object

  - by user1806687

  I've been bashing my head for the past couple of weeks trying to find a way to help me accomplish, on first look very easy task. So, I got this one object currently made out of 5 cuboids (2 sides, 1 top, 1 bottom, 1 back), this is just for an example, later on there will be whole range of different set ups. Now, the thing is when the user chooses to scale the whole object this is what should happen: X scale: top and bottom cuboids should get scaled by a scale factor, sides should get moved so they are positioned just like they were before(in this case at both ends of top and bottom cuboids), back should get scaled so it fits like before(if I simply scale it by a scale factor it will leave gaps on each side). Y scale: sides should get scaled by a scale factor, top and bottom cuboid should get moved, and back should also get scaled. Z scale: sides, top and bottom cuboids should get scaled, back should get moved. Hope you can help, EDIT: So, I've decided to explain the situation once more, this time more detailed(hopefully). I've also made some pictures of how the scaling should look like, where is the problem and the wrong way of scaling. I this example I will be using a thick walled box, with one face missing, where each wall is made by a cuboid(but later on there will be diffrent shapes of objects, where a one of the face might be roundish, or triangle or even under some angle), scaling will be 2x on X axis. 1.This is how the default object without any scaling applied looks like: http://img856.imageshack.us/img856/4293/defaulttz.png 2.If I scale the whole object(all of the meshes) by some scale factor, the problem becomes that the "thickness" of the object walls also change(which I do not want): http://img822.imageshack.us/img822/9073/wrongwaytoscale.png 3.This is how the correct scaling should look like. Appropriate faces gets caled in this case where the scale is on X axis(top, bottom, back): http://imageshack.us/photo/my-images/163/rightwayxscale1.png/ 4.But the scale factor might not be the same for all object all of the times. In this case the back has to get scaled a bit more or it leaves gaps: http://imageshack.us/photo/my-images/9/problemwhenscaling.png/ 5.If everything goes well this is how the final object should look like: http://imageshack.us/photo/my-images/856/rightwayxscale2.png/ So, as you have might noticed there are quite a bit of things to look out when scaling. I am asking you, if any of you have any idea on how to accomplish this scaling. I have tried whole bunch of things, from scaling all of the object by the same scale factor, to subtracting and adding sizes to get the right size. But nothing I tried worked, if one mesh got scaled correctly then others didnt. Donwload the example object. English is not my first language, so I am really sorry if its hard to understand what I am saying.

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• Looking for an algorithm to connect dots - shortest route

  - by e4ch

  I have written a program to solve a special puzzle, but now I'm kind of stuck at the following problem: I have about 3200 points/nodes/dots. Each of these points is connected to a few other points (usually 2-5, theoretical limit is 1-26). I have exactly one starting point and about 30 exit points (probably all of the exit points are connected to each other). Many of these 3200 points are probably not connected to neither start nor end point in any way, like a separate net, but all points are connected to at least one other point. I need to find the shortest number of hops to go from entry to exit. There is no distance between the points (unlike the road or train routing problem), just the number of hops counts. I need to find all solutions with the shortest number of hops, and not just one solution, but all. And potentially also solutions with one more hop etc. I expect to have a solution with about 30-50 hops to go from start to exit. I already tried: 1) randomly trying possibilities and just starting over when the count was bigger than a previous solution. I got first solution with 3500 hops, then it got down to about 97 after some minutes, but looking at the solutions I saw problems like unnecessary loops and stuff, so I tried to optimize a bit (like not going back where it came from etc.). More optimizations are possible, but this random thing doesn't find all best solutions or takes too long. 2) Recursively run through all ways from start (chess-problem-like) and breaking the try when it reached a previous point. This was looping at about a length of 120 nodes, so it tries chains that are (probably) by far too long. If we calculate 4 possibilities and 120 nodes, we're reaching 1.7E72 possibilities, which is not possible to calculate through. This is called Depth-first search (DFS) as I found out in the meantime. Maybe I should try Breadth-first search by adding some queue? The connections between the points are actually moves you can make in the game and the points are how the game looks like after you made the move. What would be the algorithm to use for this problem? I'm using C#.NET, but the language shouldn't matter.

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• Taking too long to get skills for entry level programmer position [closed]

  - by greenonion

  I don't have the skills for an entry level position as a .Net programmer. I am trying to learn what I need but there is too much to learn and too little time. What can I do? About two months ago, I went to a job interview for an entry level C# .Net programming/consultant position in NYC. When I heard back from them, they told me that the knowledge gap between what I knew and what they needed me to know was too big and I might have been a better fit if I had 6 months of experience. This was the first interview that I went on since graduating college. before the interview, I read a book on visual C#. Turns out it wasn't a very good book and I was missing a lot of key areas of knowledge such as ADO.net SQL (I had learned some LINQ) A little bit about how memory is handled Multiple threaded programming, etc. Because the book wasn't very good, the stuff I did know, I didn't know very well. I felt crushed. I've applied for jobs to gain experience but when recruiters hear that I have no experience they lose interest. I figured that I can at least work on my knowledge. Since then, I read "SQL Essentials" to cover the SQL bit and I found a pretty awesome book that is good enough to clear up what's hazy in my mind and covers almost all of the extra topics. The book is "C# 4.0: The Complete Reference" by Herbert Schildt. I'm even learning a lot about the topics I was familiar with. For a month now I've been working my way through this beast of a book. However, gaining the knowledge I need is taking too long. I can't hold off not having a full-time job much longer. I'm not stupid and I'm studying constantly pouring through the book, asking questions on stackoverflow, referencing the C# specification, etc. I have made great progress but there is just too much ground to cover. I'm on chapter 12 which is about a 3rd through the book. To get an idea of what I know vs don't know, the table of contents is on amazon: http://www.amazon.com/C-4-0-The-Complete-Reference/dp/007174116X How on earth can someone know enough to function as a programmer in the real world? Can I try for a job in academia? Will I have time to finish learning the rest of the C# language or am I just un-hireable?

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• Help with DB Structure, vOD site

  - by Chud37

  I have a video on demand style site that hosts series of videos under different modules. However with the way I have designed the database it is proving to be very slow. I have asked this question before and someone suggested indexing, but i cannot seem to get my head around it. But I would like someone to help with the structure of the database here to see if it can be improved. The core table is Videos: ID bigint(20) (primary key, auto-increment) pID text airdate text title text subject mediumtext url mediumtext mID int(11) vID int(11) sID int(11) pID is a unique 5 digit string to each video that is a shorthand identifier. Airdate is the TS, (stored in text format, right there maybe I should change that to TIMESTAMP AUTO UPDATE), title is self explanatory, subject is self explanatory, url is the hard link on the site to the video, mID is joined to another table for the module title, vID is joined to another table for the language of the video, (english, russian, etc) and sID is the summary for the module, a paragraph stored in an external database. The slowest part of the website is the logging part of it. I store the data in another table called 'Hits': id mediumint(10) (primary key, auto-increment) progID text ts int(10) Again, here (this was all made a while ago) but my Timestamp (ts) is an INT instead of ON UPDATE CURRENT TIMESTAMP, which I guess it should be. However This table is now 47,492 rows long and the script that I wrote to process it is very very slow, so slow in fact that it times out. A row is added to this table each time a user clicks 'Play' on the website and then so the progID is the same as the pID, and it logs the php time() timestamp in ts. Basically I load the entire database of 'Hits' into an array and count the hits in each day using the TS column. I am guessing (i'm quite slow at all this, but I had no idea this would happen when I built the thing) that this is possibly the worst way to go about this. So my questions are as follows: Is there a better way of structuring the 'Videos' table, is so, what do you suggest? Is there a better way of structuring 'hits', if so, please help/tell me! Or is it the fact that my tables are fine and the PHP coding is crappy?

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• Do functional generics exist and what is the correct name for them if they do?

  - by voroninp

  Consider the following generic class: public class EntityChangeInfo<EntityType,TEntityKey> { ChangeTypeEnum ChangeType {get;} TEntityKeyType EntityKey {get;} } Here EntityType unambiguously defines TEntityKeyType. So it would be nice to have some kind of types' map: public class EntityChangeInfo<EntityType,TEntityKey> with map < [ EntityType : Person -> TEntityKeyType : int] [ EntityType : Car -> TEntityKeyType : CarIdType ]> { ChangeTypeEnum ChangeType {get;} TEntityKeyType EntityKey {get;} } Another one example is: public class Foo<TIn> with map < [TIn : Person -> TOut1 : string, TOut2 : int, ..., TOutN : double ] [TIn : Car -> TOut1 : int, TOut2 :int, ..., TOutN : Price ] > { TOut1 Prop1 {get;set;} TOut2 Prop2 {get;set;} ... TOutN PropN {get;set;} } The reasonable question: how can this be interpreted by the compiler? Well, for me it is just the shortcut for two structurally similar classes: public sealed class Foo<Person> { string Prop1 {get;set;} int Prop2 {get;set;} ... double PropN {get;set;} } public sealed class Foo<Car> { int Prop1 {get;set;} int Prop2 {get;set;} ... Price PropN {get;set;} } But besides this we could imaging some update of the Foo<>: public class Foo<TIn> with map < [TIn : Person -> TOut1 : string, TOut2 : int, ..., TOutN : double ] [TIn : Car -> TOut1 : int, TOut2 :int, ..., TOutN : Price ] > { TOut1 Prop1 {get;set;} TOut2 Prop2 {get;set;} ... TOutN PropN {get;set;} public override string ToString() { return string.Format("prop1={0}, prop2={1},...propN={N-1}, Prop1, Prop2,...,PropN); } } This all can seem quite superficial but the idea came when I was designing the messages for our system. The very first class. Many messages with the same structure should be discriminated by the EntityType. So the question is whether such construct exists in any programming language?

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• Do functional generics exist or what is the correct name for them if they do?

  - by voroninp

  Consider the following generic class public class EntityChangeInfo<EntityType,TEntityKey> { ChangeTypeEnum ChangeType {get;} TEntityKeyType EntityKey {get;} } Here EntityType unambiguously defines TEntityKeyType. So it would be nice to have some kind of types' map public class EntityChangeInfo<EntityType,TEntityKey> with map < [ EntityType : Person -> TEntityKeyType : int] [ EntityType : Car -> TEntityKeyType : CarIdType ]> { ChangeTypeEnum ChangeType {get;} TEntityKeyType EntityKey {get;} } Another one example is: public class Foo<TIn> with map < [TIn : Person -> TOut1 : string, TOut2 : int, ..., TOutN : double ] [TIn : Car -> TOut1 : int, TOut2 :int, ..., TOutN : Price ] > { TOut1 Prop1 {get;set;} TOut2 Prop2 {get;set;} ... TOutN PropN {get;set;} } The reasonable question how this can be interpreted by the compiler? Well, for me it is just the sortcut for two structurally similar classes: public sealed class Foo<Person> { string Prop1 {get;set;} int Prop2 {get;set;} ... double PropN {get;set;} } public sealed class Foo<Car> { int Prop1 {get;set;} int Prop2 {get;set;} ... Price PropN {get;set;} } But besides this we could imaging some update of the Foo<: public class Foo<TIn> with map < [TIn : Person -> TOut1 : string, TOut2 : int, ..., TOutN : double ] [TIn : Car -> TOut1 : int, TOut2 :int, ..., TOutN : Price ] > { TOut1 Prop1 {get;set;} TOut2 Prop2 {get;set;} ... TOutN PropN {get;set;} public override string ToString() { return string.Format("prop1={0}, prop2={1},...propN={N-1}, Prop1, Prop2,...,PropN); } } This all can seem quite superficial but the idea came when I was designing the messages for our system. The very first class. Many messages with the same structrue should be discriminated by the EntityType. So the question is whether such construct exist in any programming language?

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• Protobuf design patterns

  - by Monster Truck

  I am evaluating Google Protocol Buffers for a Java based service (but am expecting language agnostic patterns). I have two questions: The first is a broad general question: What patterns are we seeing people use? Said patterns being related to class organization (e.g., messages per .proto file, packaging, and distribution) and message definition (e.g., repeated fields vs. repeated encapsulated fields*) etc. There is very little information of this sort on the Google Protobuf Help pages and public blogs while there is a ton of information for established protocols such as XML. I also have specific questions over the following two different patterns: Represent messages in .proto files, package them as a separate jar, and ship it to target consumers of the service --which is basically the default approach I guess. Do the same but also include hand crafted wrappers (not sub-classes!) around each message that implement a contract supporting at least these two methods (T is the wrapper class, V is the message class (using generics but simplified syntax for brevity): public V toProtobufMessage() { V.Builder builder = V.newBuilder(); for (Item item : getItemList()) { builder.addItem(item); } return builder.setAmountPayable(getAmountPayable()). setShippingAddress(getShippingAddress()). build(); } public static T fromProtobufMessage(V message_) { return new T(message_.getShippingAddress(), message_.getItemList(), message_.getAmountPayable()); } One advantage I see with (2) is that I can hide away the complexities introduced by V.newBuilder().addField().build() and add some meaningful methods such as isOpenForTrade() or isAddressInFreeDeliveryZone() etc. in my wrappers. The second advantage I see with (2) is that my clients deal with immutable objects (something I can enforce in the wrapper class). One disadvantage I see with (2) is that I duplicate code and have to sync up my wrapper classes with .proto files. Does anyone have better techniques or further critiques on any of the two approaches? *By encapsulating a repeated field I mean messages such as this one: message ItemList { repeated item = 1; } message CustomerInvoice { required ShippingAddress address = 1; required ItemList = 2; required double amountPayable = 3; } instead of messages such as this one: message CustomerInvoice { required ShippingAddress address = 1; repeated Item item = 2; required double amountPayable = 3; } I like the latter but am happy to hear arguments against it.

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• database independent coding framework options?

  - by statirasystems

  Background: I have not programmed in a while besides doing VBA and a little VB.NET. So please forgive my language use. I'm green and have a head cold. I am reading all I can now, but I have no programming circles to draw from. The information I am providing is to help guide you to what I am looking for. I am not confident I can ask the question properly. Story: I have four different projects that I am starting. Obviously I won't be working on all at the same time however they each will have similar needs and be inter related. They are as follows: Desktop Environment/System User Interface - basically a product that runs on major computers via mono or .net that unifies the look and functions. In the context of the up coming question it would be able to directly access data of various types. It would work in tandum with my office suite, system manager, and network application framework. Office Suite - technically it would not be a suite since I will be doing it from one interfacel except for the Communications Application. As far as the question, it will need to be able to link to various data sources for storing files and using, manipulating, and presenting information. System Manager - an intellegent system to manage and administer the entire network and all equipment. As far as the question, needs to be able to access data for archiving and and for accessing it's own settings stored in various formats, sql or xml. Network Application Framework - A complete system that can be used for ERP, CRM, CMS, Errata, File Management, and so on. As to the question to be able to access it's own or interlink with existing applications. Requirement: C#, Simplifies and reduces coding, use the same code to access diffent databases(ie MySQL, MS SQL, ACCESS, XML, ...), Mono would be nice but not a must, Question: What librarys, frameworks, or other options would be able to help with this? Is there a good resource to guide me? I don't want arguing over what is best, just information to help me further understand and make an educated decision.

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• Trying to find resources to learn how to test software [closed]

  - by Davek804

  First off, yes this is a general question, and I'd be perfectly happy to move this to another portion of SE, but I didn't see a more fitting sub. Basically, I am hoping a more experienced QA tester can come along and really fill in some basics for me. So far, websites seem to be sparse in terms of explaining languages involved, basic practices, etc. So, I'm sorry in advance if this is too general, but towards the end of this post I ask some specific questions if it's just absolutely unacceptable to speak in general terms. I just landed a position as Junior Systems and QA Engineer with a social media startup. Their QA and testing is almost nonexistent, so if I do a good job, I imagine I'll find a lot of bugs and have a secure role in the business. I'm pretty good with the systems aspect of my role, but I need to learn more about the QA and testing aspects. We run hardware that's touchscreen based - the user can use and interact with the devices. So, in terms of my QA role, in the short term, I need to build scripts to test the hardware/software as a 'user' to try to uncover bugs. First off, what language should these scripts be written in? Does anyone have some examples? What about the longer term 'automated testing'? I'm familiar with regression testing as the developer adds in new features, sure, but the 50,000 other types of testing, not so much. Most of our hardware runs dotnet/C# code, with some of the servers running Java - but I don't expect to need to run tests on the Java side at this point. I hope to meet with one developer today and try to get a good idea of the output from the hardware so that I can 'mock' this data that gets sent to servers, to try to bugtest. Eventually, we will be moving the hardware to be closer to where I live and work, so that I can test virtually and on real hardware. So a lot of the bugs we're dealing with now are like this: the Local Server, which kiosks report their data to gets updated from the kiosks, but the remote server does not. Or, vis versa when the user registers on a kiosk, the remote server updates but the local server does not. But yeah, without much more detail, I imagine a lot of this info isn't helpful. I've bought a book "How Google Tests Software", but it's really a book more about 'how their software testing is different from Microsoft'. It doesn't teach how to test so much as why their methods are better. Does anyone have a good book that I can buy? An ebook maybe? My local Barnes and Noble kinda had a terrible selection. I also figure a book from 2005 is not necessarily that good either.

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• ????Java EE????WebLogic Server???????????|WebLogic Channel|??????

  - by ???02

  20????????????????????????/???????????Java EE???WebLogic Server????????????????IT(????)?????????????????????????????????????/??????????????????????????????????????????/?????????????????????????2011?9?6???????????????????WebLogic & Java EE????????????????????????????Java EE?WebLogic Server????????????(???)?WebLogic Suite?????/??????????????????　???Java????????????·?????????????????WebLogic & Java EE?????????????????????????? Fusion Middleware?????????????????Oracle WebLogic Server???????????????????????????WebLogic Server????????????????·??????????????????????　???WebLogic Server??????????????Standard Edition?????????????Enterprise Edition??????????·??????·????????WebLogic Suite??3??????????????????????????WebLogic Suite??????????????WebLogic Server???????????/??????JRockit Flight Recorder????Mission Control???????·???·??????Oracle Coherence????????????????Java??????JRockit Real Time????????????????Oracle Enterprise Manager??????????????????????????????????????????????????????????·??????·??????????????????·????????　????????????????????WebLogic Server?????????????????????????????·????????????????·??????2????????2??????????????IT???????????????????????????????????????·????????????????IT??????????????????????????????????·???????????????????IT??????????????????????????????????Java????????·?????????????????????????????????????????????????????????　??????????????????????????????????????????????"???"??????????????WebLogic Suite???????????????????????????????????????????????????????????????(???)　???????WebLogic Server?????????????????WebLogic Suite 11g?????????????????????????????????Oracle Database??????????????????4??????　???????????????????Java EE 5????????????Java EE 6???????????????Eclipse????????????????FastSwap????????????????????????????????????????????????????????　?????????????????????????JRockit Flight Recorder????????????·????????????????????????????????????????·???????????????????????????????????　Oracle Database?????????????Oracle Real Application Clusters(RAC)??????????Active GridLink for RAC?????????????????RAC???????????????????????·????????????????????????????·?????????????????????????????????RAC?????????WebLogic Server?????????????????????????????????????????????????????????????????????????????????????????　?????????????????·???????2011????????????????WebLogic Server 10.3.6???2012?????????????????WebLogic Server 12.1.1????????WebLogic Server 10.3.6???????·???????Oracle Exalogic Elastic Cloud???WebLogic Server 12.1.1?Java?????????????????????????　WebLogic Server 10.3.6????????????Oracle Virtual Assembly Builder???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????WebLogic Server 10.3.6?????????????????InfiniBand????????Socket Direct Protocol???????????　??????????·???????WebLogic Server 12.1.1???Java EE 6??????????????????Web?????????????????????Java EE 6?????????WebLogic Server?????????????????????　??????????????????????????????WebLogic Suite????????????????????????????????·??????·????????WebLogic Server????????????Java EE????6????????!　????????Java EE 6????-??????????????????????? Fusion Middleware?????? ???Java???????????????????Java???????????????????　????????????????????????――?Java EE??????????????????????2000???????EJB??????Java EE?????????????????Web???????????????????Struts???Spring Framework??????????????????????????????????Java EE?"?"???????????????????????????????????????????????????????????????????????????????????XML??????????????????????????Java EE??????????(=??)???????　??????????????????????????????????J2EE 1.4??????Java EE 5???????"??????"???????????????????????????Java EE 6??????????????"??????"???????????????????????????2009?12???????????????????????????(???)　?????????????????????????Java EE 6????????????????????????????????????????????????4??????　?????????????Java EE???????????????????????????????????????????web.xml?????????????????Java EE 6??????????????????web.xml???????????????????????????????????????????????????????????????????????????????　????Java EE????????????????????????????Java EE 6??????Web??????????????????Web????????????Java EE??????????????????????????????????????/????????Web????????????????????????　????????????????????Java EE???????·??????????JavaServer Faces(JSF) 2.0????????????????????????????????????　JSF 2.0??????????????????·????????XHTML???????????????????????·???????(UI)??????????????JSF 1.2???Java Server Pages(JSP)????????????????????????????????????????JSF 2.0???Facelet??????XHTML??????????????????????????????????　?????EJB??????????????????????????EJB 3.1?????????EJB???????????????????????????????????????·????????????????Java SE???EJB??????????????????????????　??????????????????????????????????????????·???????????Java EE 5????????Java EE 6?????????Web??????????????????????·??????????Tomcat??????????????·??????????????(???)???????????????????Web?????????????Tomcat??????????????????????　???????????????Tomcat???????Java Servlet?JSP?Expression Language?????????????????Struts???????????????Web????????????????????????????????????????Web??????????????????????????????????????????????????????????????Java EE 6?????????????????????????????　?Java EE 6?Web???????????Java EE?????????????????Web????????????????????Java EE 6???????WebLogic Server????????????????????????????????????????Web??????????????????????(???)　?????????????????????????????????????????????????????????Java EE 6?????????????????????Java EE 6???"??????"?????????????JRockit Flight Recorder/Mission Control?????????!　??????????????? Fusion Middleware?????????????????Oracle WebLogic Server 11g?????????-???????WebLogic??????!??????????????WebLogic Server?????????????????????????????????????????????????????????????????????????JRockit Flight Recorder?JRockit Mission Control????????????·???????????????　????????JRockit Flight Recorder(JFR)??Java???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　??JFR????????????????????SLA????????????????????????????????　????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????JRockit?????????????JRockit Mission Control(JMC)?????JFR??????????JFR????????·????????????????????　JFR?????????????????????????????????????????????????????????????????????????·????????????????????????????????????????·?????????????????????????????????????????????????????4???????????????????????JFR????????????????????????????????????????　???JMC?Eclipse??????????????????????????????????????????·?????????????????????????????????????Eclipse??????JMC????????????????·???????????????????·??????????????????????????????????????　??????JMC?Eclipse?????????????????????????????????????????UI????????????????????????????????????????????????????????????????????????????????????????????????: ?????????! ?????????????????JRockit Flight Recorder?????*　　　*　　　*　???????WebLogic & Java EE??????????????????Java?WebLogic Server????3??????????????????????????????????·?????????????????????????

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• Debugging HTML & JavaScript with Firebug

  - by MattDiPasquale

  I made a JSONP widget. However, when one of the partner sites put it in their page, (1) it doesn't render at all in IE and (2) in other browsers (Firefox & Google Chrome), the HTML of the widget renders incorrectly: the <aside> closes prematurely, before the Financial Aid Glossary. It's something specific to that page because it works fine on this example college resource center page. To fix these two issues, I tried saving the page source to a local file and messing around with the local file and with Firebug, deleting DOM elements and stuff. I even tried fixing the errors that The W3C Markup Validation Service found. But, I still couldn't get it to render correctly. How should I tell them to change their page so that the widget renders correctly? Or, how should I update the widget script I wrote? They may take their page down since it's not rendering correctly, so here's the source of the page just in case: <!DOCTYPE html> <html> <head id="ctl01_Head1" profile="New Jersey Credit Union League"><title> College Resource Center - New Jersey Credit Union League </title> <link rel='stylesheet' type='text/css' href='http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/themes/base/jquery.ui.all.css' /> <link rel='stylesheet' type='text/css' href='/csshandler.ashx?skin=InnerTemplate&amp;s=1&amp;v=2.3.5.8' /> <!--[if IE]> <script defer="defer" src="http://njcul.org/ClientScript/html5.js" type="text/javascript"></script> <![endif]--> <!--[if lt IE 7]> <link rel="stylesheet" href="http://njcul.org/Data/Sites/1/skins/InnerTemplate/IESpecific.css?cb=9d546eec-6752-4067-8f94-9a5b642213e4" type="text/css" id="IE6CSS" /> <![endif]--> <!--[if IE 7]> <link rel="stylesheet" href="http://njcul.org/Data/Sites/1/skins/InnerTemplate/IE7Specific.css?cb=9d546eec-6752-4067-8f94-9a5b642213e4" 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  Read the article

• 2 javascripts problem

  - by pradeep

  <?php global $user; $userId = $user->uid; /* start with default */ $myresult = ""; /* All Includes - start */ include_once('db.php'); include_once('valid-scripts/validateData.php'); /* All Includes - end */ /* Build All required Variables - start */ $alias = $_GET['alias']; $product = $_GET['product']; $product = strtolower(substr($product,0,-1)); $master_table = $product.'_master'; $rating_master_table = $product.'_rating_master'; $rating_table = $product.'_rating'; $numProperties = 15; /* Build All required Variables - end */ /* Add all Styles required - start */ $myresult .= '<link href="/jquery.rating.css" type="text/css" rel="stylesheet"/>'; /* Add all Styles required - end */ /* Show Hide Variables/parameters - start */ include_once('all_include_files/show_hide.php'); /* Show Hide Variables/parameters - end */ /* All Javascript - start */ //$myresult .= '<script src="/jquery.rating.js" type="text/javascript" language="javascript"></script>'; ?> <style> #tabs { //font-size: 90%; //margin: 20px 0; margin: 2px 0; } #tabs ul { float: right; background: #E3FEFA; width: 600px; //padding-top: 4px; } #tabs li { margin-left: 8px; list-style: none; } * html #tabs li { display: inline; /* ie6 double float margin bug */ } #tabs li, #tabs li a { float: left; } #tabs ul li a { text-decoration: none; //padding: 8px; color: #0073BF; font-weight: bold; } #tabs ul li.active { background: #CEE1EF url(/all_include_files/img/nav-right.gif) no-repeat right top; } #tabs ul li.active a { background: url(/all_include_files/img/nav-left.gif) no-repeat left top; color: #333333; } #tabs div { //background: #CEE1EF; clear: both; //padding: 20px; min-height: 200px; } #tabs div h3 { text-transform: uppercase; margin-bottom: 10px; letter-spacing: 1px; #tabs div p { line-height: 150%; } </style> <script src="/jquery.rating.js" type="text/javascript" language="javascript"></script> <script src="/jquery.metadata.js" type="text/javascript" language="javascript"></script> <script type='text/javascript'> function openComment(number) { alert('working'); $('#comment'+number).css('display',''); } $('.star').rating({ callback: function(value, link){ alert(value); } }); $(document).ready(function() { //$('#tabs div').hide(); //$('#tabs div:first').show(); $('#tabs ul li:first').addClass('active'); $('#tabs ul li a').click(function() { $('#tabs ul li').removeClass('active'); $(this).parent().addClass('active'); var currentTab = $(this).attr('href'); $('#tabs div').hide(); $(currentTab).show(); return false; }); $("#clickit").click(function() { $.post("/mobile/tablechange.php",{ p1:'<?php echo $brand ?>',p2:'<?php echo $model ?>',userid:'<?php echo $userid ?>' } ,function(data){ $("#changetable").html(data); }); }); $('div.expandable p').expander({ slicePoint: 200, // default is 100 expandText: 'more &raquo;', // default is 'read more...' collapseTimer: 0, // re-collapses after 5 seconds; default is 0, so no re-collapsing userCollapseText: '[^]' // default is '[collapse expanded text]' }); }); </script> <?php /* All Javascript - end */ /* Form Processing after submit - start */ /* Form Processing after submit - end */ /* Actual Form or Page - start */ /*fetch all data needed */ /* initial query */ $result_product = query_product_table($product,$alias); /*fetch property names of product */ $product_properties = master_table($master_table); /*rating table query */ $master_rating_properties = master_rating_table($rating_master_table); /*get user ratings*/ $user_ratings = user_ratings($userId,$alias,$rating_table); $myresult .= '<div class=\'Services\'>'; //$myresult .="<form name ='form1' id='form1' method = 'POST' action='".$_SERVER['php_self'] ."'>"; if(!$result_product) { header('Location: /page-not-found'); } else { $row_product = mysql_fetch_array($result_product); $myresult .= "<h3 class='newstyle'>".$row_product['alias']." <a style='float:right;padding-right:20px;color:white;text-decoration:underline;' href='/'>Back</a> </h3>"; /* start actual product display - start*/ $myresult .= "<div class=\"product\">"; /* start table 1*/ $myresult .= '<table border=\'0\' cellspacing=\'0\' cellpadding=\'0\' style=\'width:580px; table-layout:fixed;\'>'; $myresult .= '<tr>'; $myresult .='<td valign=\'top\'>'; /* start table 2*/ $myresult .='<table width=\'100%\' border=\'0\' cellspacing=\'0\' cellpadding=\'0\'>'; $myresult .= '<tr>'; $myresult .= '<td valign=\'top\' style=\'width:164px;\'>'; /* start table 3*/ $myresult .= '<table style=\'width:164px;\' border=\'0\' cellspacing=\'0\' cellpadding=\'0\'>'; $myresult .= "<tr>"; /* start of the pic row */ $myresult .= '<td align=\'center\' class=\'various_product\'>'; if($row_product['pic'] != "") { $myresult .= '<ul id=\'mycarousel\' style=\'display:\';>'; $myresult .= '<li><a href=\'/all_image_scripts/origpicdisplay.php?product='.rawurlencode($product).'&alias='.rawurlencode($alias).'&picid=pic&p= \'rel=\'lightbox[roadtrip]\'><img src=\'/all_image_scripts/picdisplay1.php?product='.rawurlencode($product).'&alias='.rawurlencode($alias).'\'></img></a></li>'; for($p = 1; $p <= 4; $p++) { if($row_product['pic'.$p] != "") { $myresult .= '<li><a href=\'/all_image_scripts/origpicdisplay.php?product='.rawurlencode($product).'&alias='.rawurlencode($alias).'&picid=pic'.rawurlencode($p).'&p='.rawurlencode($p).'\' rel=\'lightbox[roadtrip]\'><img src=\'/all_image_scripts/thumbpicdisplay.php?product='.rawurlencode($product).'&alias='.rawurlencode($alias).'&picid=pic'.rawurlencode($p).'\'></img></a></li>'; } } $myresult .= '</ul>'; } else { $myresult .= "<img width='50' height='70' src='/images/no-image.gif'></img>"; } jcarousel_add('#mycarousel', array('horizontal' => TRUE,'scroll' => 1,'visible' => 1)); $myresult .= "</td>"; /* end display of pic td*/ $myresult .= "</tr>"; /* end display of pic tr*/ $myresult .= "</table></td>"; /* end display of pic table and earlier td - Still 1 open TR td table tr -hint*/ $myresult .= '<td style=\'width:450px;\'>'; /*table - 4*/ $myresult .= '<table width=\'100%\' border=\'0\' cellspacing=\'0\' cellpadding=\'0\' style=\'display:block;\'>'; /* Start showing property and values */ $myresult .= '<tr>'; $myresult .= '<td class=\'tick\'><img src=\'/images/ul_li_bg.gif\' width=\'12\' height=\'12\' /></td>'; $myresult .= '<td class=\'leftText\'>'.ucfirst($product).':</td>'; $myresult .= '<td class=\'rightText\'>'.$row_product['alias'] .'</td>'; $myresult .= "</tr>"; for($j = 3; $j <= 5 ; $j++){ if($product_properties['property'.$j.'_name'] != "") { if($row_product['property'.$j] != "") { $myresult .= '<tr>'; $myresult .= '<td class=\'tick\'><img src=\'/images/ul_li_bg.gif\' width=\'12\' height=\'12\' /></td>'; $myresult .= '<td class=\'leftText\'>'.$product_properties['property'.$j.'_name'].':</td>'; $myresult .= '<td class=\'rightText\'>'.$row_product['property'.$j] .'</td>'; $myresult .= '</tr>'; } /* end if*/ } /* end if*/ } /* end for*/ /* show hide block */ $myresult .= '<tbody id=\'extra_properties\' style=\'display: none;\'>'; for($j = 6; $j <= 15 ; $j++){ if($product_properties['property'.$j.'_name'] != "") { if($row_product['property'.$j] != "") { $myresult .= '<tr>'; $myresult .= '<td class=\'tick\'><img src=\'/images/ul_li_bg.gif\' width=\'12\' height=\'12\' /></td>'; $myresult .= '<td class=\'leftText\'>'.$produtc_properties['property'.$j.'_name'].':</td>'; $myresult .= '<td class=\'rightText\'>'.$row_product['property'.$j] .'</td>'; $myresult .= '</tr>'; } /* end if*/ } /* end if*/ } /* end for */ $myresult .= '</tbody>'; /* end show/hide tbody */ $myresult .= '<tr>'; $myresult .= '<td>'; $myresult .= '&nbsp;'; $myresult .= '</td>'; $myresult .= '<td>'; $myresult .= '&nbsp;'; $myresult .= '</td>'; $myresult .= '<td align=\'right\' style=\'text-align:right;text-decoration:underline;\'>'; $myresult .= '<a class=\'right_link\' href=\'javascript:showMore()\'>Show Additional Details...</a>'; $myresult .= '</td>'; $myresult .= '</tr>'; /* End showing property and values */ $showreview = 'display:'; /* review show hide */ /*$myresult .= '<tbody '.$showreview.'>'; $myresult .= '<tr>'; $myresult .= '<td colspan=\'2\'><span class=\'reviews\'>'; //check //$numreviews = getreviewcount($brand,$model,'mobile_user_reviews'); if($numreviews > 0) { $myresult .= '<a href=\'mobilereviews?alias='.rawurlencode($alias).'\'> <span>$numreviews Reviews</span></a>'; } else { $myresult .= " $numreviews Reviews"; } $myresult .= "</span></td>"; $myresult .= "</tr>"; */ $myresult .= "</tbody>"; /* review show hide - end */ /* count show hide */ $myresult .= '<tbody '.$showcount.'>'; $myresult .= '<tr>'; $myresult .= '<td colspan=\'2\'><span class=\'reviews\'>'; //check //$totalvotes = gettotalvotes($row['property1'],$row['property2'],'mobile_rating'); $myresult .= "</td>"; $myresult .= "</tr>"; $myresult .= "</tbody>"; /* count show hide - end */ $myresult .= "</table></td>"; /* end table 4 */ $myresult .= '</tr>'; /* end 1 row and remaining tr , td ,table */ $myresult .= '</table></td>'; $myresult .= '</tr>'; /* remianing only 1 table */ /* ratings - positive last section starts here */ $max= array(); for ($l = 1 ; $l < 15; $l++){ if($row_product['property'.$l.'_avg']){ $maxarray = 0; $maxarray = $row_product['property'.$l.'_avg']; $max['rating'.$l.'_name'] = $maxarray; } } if(count($max) >0 ) { include('all_include_files/min_max_properties.php'); } if(($row_product['freshness'] <= strtotime("-3 month"))) { $image_type= 'old'; } else if(($row_product['freshness'] <= strtotime("-2 month"))) { $image_type= 'bitold'; } else if(($row_product['freshness'] <= strtotime("-1 month")) || ($row_product['freshness'] > strtotime("-1 month"))) { $image_type= 'new'; } $img_name = $image_type; $myresult .= "<tr>"; $myresult .= "<td>"; $myresult .= "<table width='100%' border='0'>"; $myresult .= "<tr>"; $myresult .= "<td width='170' class=\"ratingz\"><span><u>Overall rating</u></span></td>"; $myresult .= "<td width='150' class=\"ratingz\"><span><u>Positive</u></span></td>"; $myresult .= "<td width='150' class=\"ratingz\"><span><u>Negative</u></span></td>"; if($img_name == 'new'){ $images = "<img src='/sites/default/files/battery-discharging-100.png' width='40' height='40'></img>"; } else if($img_name == 'bitold'){ $images = "<img src='/sites/default/files/battery-discharging-80.png' width='40' height='40'></img>"; } else if($img_name == 'old'){ $images = "<img src='/sites/default/files/battery-discharging-0.png' width='40' height='40'></img>"; } else { $images = ""; } $myresult .= "<td rowspan='2'><p ".$showbattery.">". $images ."</p></td>"; $myresult .= "</tr>"; $myresult .= "<tr>"; $myresult .= "<td>"; $i++; for($k = 0.5; $k <= 10.0; $k+=0.5) { $overall = roundOff($row_product['overall_rating']); if($overall == $k) { $chk ="checked"; } else { $chk = ""; } $myresult .= '<input class=\'star {split:2}\' type=\'radio\' value=\''. $k .'\' '.$chk.' title=\''. $k.' out of 10 \' disabled />'; } $myresult .= '</td>'; $myresult .= '<td ><span>'.$positive.'</span></td>'; $myresult .= '<td ><span>'.$negative.'</span></td>'; $myresult .= '</tr>'; $myresult .= '</table></td>'; $myresult .= '</tr>'; /* ratings - positive last section ends here */ $myresult .= '<tr>'; if($row_product['description'] != ""){ if(words_count($row_product['description']) > 8){ $myresult .= '<td><p><span class=\'description\'><strong><u>Description</u>:</strong></span>&nbsp;&nbsp; <div class=\'expandable\'><p>'.$row_product['description'].'</div></p></p></td>'; } else { $myresult .= '<td><p><span class=\'description\'><strong><u>Description</u>:</strong></span>&nbsp;&nbsp;'. $row_product['description'] .'</p></td>'; } } $myresult .= '</tr>'; $myresult .= '</table>'; /* end 1st table */ $myresult .= '</div>'; /* start actual product display - end*/ /*start the form to take ratings */ $myresult .= '<div id=\'tabs\'>'; $myresult .= '<ul>'; $myresult .= '<li><a href=\'#tab-1\'>Ratings</a></li>'; $myresult .= '<li><a href=\'#tab-2\'>Click here to rate</a></li>'; $myresult .= '</ul>'; $myresult .= '<div id=\'tab-1\'>'; /* actual rating table - start - jsut display ratings */ $myresult .= '<table id=\'rounded-corner\'>'; /* thead - start */ $myresult .= '<thead>'; $myresult .= '<tr>'; $myresult .= '<th width=\'30%\' class=\'rounded-company\' scope=\'col\'><span style=\'font: normal 18px Arial, Helvetica, sans-serif; color:#FFF;\'>Ratings</span></th>'; $myresult .= '<th width=\'70%\' colspan=\'2\'class=\'rounded-q4\' scope=\'col\'><a href=\'#rounded-corner\' id=\'clickit\' style=\'color:white;text-decoration:underline;\' $disabled ></a></th> '; /*$myresult .= '<th width=\'70%\' colspan=\'2\'class=\'rounded-q4\' scope=\'col\'><a href=\'#rounded-corner\' id=\'clickit\' style=\'color:white;text-decoration:underline;\' $disabled >Click here to rate</a></th> ';*/ $myresult .= '</tr>'; $myresult .= '</thead>'; /* thead - end */ /* tbody - start */ $myresult .= '<tbody>'; /*start printing the table wth feature and ratings */ for ($i = 1 ; $i < $numProperties; $i++){ if($master_rating_properties['rating'.$i.'_name']){ $myresult .= '<tr>'; $myresult .= '<td width=\'22%\'>'; $indfeature = 0; $indfeature = $row_product['property'.$i.'_avg']; $myresult .= $master_rating_properties['rating'.$i.'_name'].' ( '.$indfeature .')'; $myresult .= '</td>'; $myresult .= '<td colspan=\'0\' width=\'38%\' >'; $tocheck = $indfeature; for($k = 0.5; $k <= 10.0; $k+=0.5){ $tocheck = roundOff($tocheck); if(($tocheck) == $k) { $chk = "checked"; } else { $chk = ""; } $myresult .= '<input class=\'star {split:2}\' type=\'radio\' name=\'drating'.$i.'\' id=\'drating'.$i.''.$k.'\' value=\''. $k .'\' '.$chk.' title=\''. $k.' out of 10 \' disabled \'/>'; } /* for k loop end */ $myresult .= '</tr>'; } /* end if loop */ } /* end i for loop */ $myresult .= '</tbody>'; /* end tbody */ /* footer round corner start */ $myresult .= '<tfoot>'; $myresult .= '<tr>'; $myresult .= '<td class=\'rounded-foot-left\'>&nbsp;</td>'; $myresult .= '<td class=\'rounded-foot-right\' colspan=\'4\' >'; $myresult .= '</td>'; $myresult .= '</tr>'; $myresult .= '</tfoot>'; $myresult .= '</table>'; /*round corner table end */ $myresult .= '</div>'; /*end 1st tab */ /*start 2nd tab */ $myresult .= '<div id=\'tab-2\'>'; $myresult .= '<form name =\'form1\' id=\'form1\' method = \'POST\' action=\''.$_SERVER['php_self'] .'\'>'; /* actual rating table - start - actual rate/update */ $myresult .= '<table id=\'rounded-corner\'>'; /* thead - start */ $myresult .= '<thead>'; $myresult .= '<tr>'; $myresult .= '<th width=\'30%\' class=\'rounded-company\' scope=\'col\'><span style=\'font: normal 18px Arial, Helvetica, sans-serif; color:#FFF;\'>Ratings</span></th>'; $myresult .= '<th width=\'70%\' colspan=\'2\'class=\'rounded-q4\' scope=\'col\'></th>'; $myresult .= '</tr>'; $myresult .= '</thead>'; /* thead - end */ /* tbody - start */ $myresult .= '<tbody>'; unset($i); /*start printing the table wth feature and ratings */ for ($i = 1 ; $i < $numProperties; $i++){ if($master_rating_properties['rating'.$i.'_name']){ $myresult .= '<tr>'; /*fetch ratings and comments - 1st make it to null */ $indfeature = 0; $comment = ''; $indfeature = $user_ratings['rating'.$i]; if($indfeature == NULL){ $indfeature = 0; } $comment = $user_ratings['rating'.$i.'_comment']; $myresult .= '<td width=\'22%\'>'; $myresult .= $master_rating_properties['rating'.$i.'_name'].' ( '.$indfeature.' )'; $myresult .= '</td>'; $myresult .= '<td colspan=\'0\' width=\'38%\' >'; if(($userId != '0') && (is_array($user_ratings))) { $tocheck = $indfeature; } else { $tocheck = '0'; } for($k = 0.5; $k <= 10.0; $k+=0.5){ $tocheck = roundOff($tocheck); if(($tocheck) == $k) { $chk = "checked"; } else { $chk = ""; } $myresult .= '<input class=\'star {split:2}\' type=\'radio\' name=\'rating'.$i.'\' id=\'rating'.$i.''.$k.'\' value=\''. $k .'\' '.$chk.' title=\''. $k.' out of 10 \' '.$disabled.' \' />'; } /* for k loop end */ $myresult .= '</td>'; $myresult .= '<td width=\'40%\'>'; $myresult .= '<input title=\'Reason for this Rating.. \'type=\'text\' size=\'25\' name=\'comment'.$i.'\' id=\'comment'.$i.'\' style=\'display:;\' maxlength=\'255\' value="'.$comment.'">'; $myresult .= '</td>'; $myresult .= '</tr>'; } /* end if loop */ } /* end i for loop */ $myresult .= '</tbody>'; /* end tbody */ /* footer round corner start */ $myresult .= '<tfoot>'; $myresult .= '<tr>'; $myresult .= '<td class=\'rounded-foot-left\'>&nbsp;</td>'; $myresult .= '<td class=\'rounded-foot-right\' colspan=\'4\' >'; if(($userId != '0') && (is_array($user_ratings))) { $myresult .= '<input type=\'button\' id=\'update_form\' value=\'Update\'>'; } else { $myresult .= '<input type=\'button\' id=\'save_form\' value=\'Save\'>'; } $myresult .= '</td>'; $myresult .= '</tr>'; $myresult .= '</tfoot>'; $myresult .= '</table>'; /*round corner table end */ $myresult .= '</form>'; /*end the form to take ratings */ $myresult .= '</div>'; /*end 2nd tab */ $myresult .= '</div>'; /*end tabs div */ /* actual rating table - end */ /* 1st form ends here id- ratings_form */ } /* end of if loop result_product loop */ /* start table 3 - overall comment*/ $myresult .= '<table border=\'0\' cellspacing=\'0\' cellpadding=\'0\' style=\'width:580px; table-layout:fixed;\' id=\'rounded-corner\'>'; $myresult .= '<tbody>'; /* thead - start */ $myresult .= '<thead>'; $myresult .= '<tr>'; $myresult .= '<th width=\'100%\' colspan=\'2\' class=\'rounded-company\' scope=\'col\'><span style=\'font: normal 18px Arial, Helvetica, sans-serif; color:#FFF;\'>Overall Comments</span></th>'; $myresult .= '<th colspan=\'3\' class=\'rounded-q4\' scope=\'col\'></th>'; $myresult .= '</tr>'; $myresult .= '</thead>'; /* thead - end */ $myresult .= '<tr>'; $myresult .= '<td colspan=\'4\'>'; $myresult .= '<textarea title=\'OverAll Comment\' name=\'overall_comment\' cols=\'65\'></textarea>'; $myresult .= '</td>'; $myresult .= '</tr>'; $myresult .= '<tbody>'; $myresult .= '</table>'; /* end table 3 - overall comment*/ /* start table 4 - summary*/ $myresult .= '<table border=\'0\' cellspacing=\'0\' cellpadding=\'0\' style=\'width:580px; table-layout:fixed;\' id=\'rounded-corner\'>'; $myresult .= '<tbody>'; /* thead - start */ $myresult .= '<thead>'; $myresult .= '<tr>'; $myresult .= '<th colspan=\'2\' class=\'rounded-company\' scope=\'col\'><span style=\'font: normal 18px Arial, Helvetica, sans-serif; color:#FFF;\'>Your Opinion</span></th>'; $myresult .= '<th colspan=\'2\'class=\'rounded-q4\' scope=\'col\'></th>'; $myresult .= '</tr>'; $myresult .= '</thead>'; /* thead - end */ $myresult .= '<tr>'; $myresult .= '<td colspan=\'2\'>'; $myresult .= 'Do you Agree with the Ratings'; $myresult .= '</td>'; $myresult .= '<td colspan=\'2\'>'; $myresult .= 'Was the Information Helpful'; $myresult .= '</td>'; $myresult .= '</tr>'; $myresult .= '<tr>'; $myresult .= '<form name=\'form2\' id=\'form2\' method=\'post\'>'; $myresult .= '<td>'; $myresult .= '<input type=\'button\' class=\'agree\' value=\'agree\'>'; $myresult .= '</td>'; $myresult .= '<td>'; $myresult .= '<input type=\'button\' class=\'disagree\' value=\'disagree\'>'; $myresult .= '</td>'; $myresult .= '<input type=\'hidden\' name=\'agree_disagree\' id=\'agree_disagree\'>'; $myresult .= '</form>'; $myresult .= '<form name=\'form3\' id=\'form3\' method=\'post\'>'; $myresult .= '<td>'; $myresult .= '<input type=\'button\' class=\'helpful\' value=\'Helpful\'>'; $myresult .= '</td>'; $myresult .= '<td>'; $myresult .= '<input type=\'button\' class=\'nothelpful\' value=\'Not Helpful\'>'; $myresult .= '</td>'; $myresult .= '<input type=\'hidden\' name=\'help_nohelp\' id=\'help_nohelp\'>'; $myresult .= '</form>'; $myresult .= '</tr>'; $myresult .= '</tbody>'; $myresult .= '</table>'; /*end table 4 summary table */ $myresult .= '</div>'; /* Actual Form or Page - end */ echo $myresult; //echo 'Product: '.$product; //echo '<br/>Alias: '.$alias; ?> hey this code is working fine for me . as required. the star class code is taken from http://www.fyneworks.com/jquery/star-rating/ ... it works well.. but when i insert code to add tabs for content ,the starts is not visible at all. but when i check source code. the stars are actually there . dono whats the prob. any suggestions on this this is the tabs code $('#tabs div').hide(); ('#tabs div:first').show(); $('#tabs ul li:first').addClass('active'); $('#tabs ul li a').click(function() { $('#tabs ul li').removeClass('active'); $(this).parent().addClass('active'); var currentTab = $(this).attr('href'); $('#tabs div').hide(); $(currentTab).show(); return false; });

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