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• Javascript Hex String to Image

  - by Gunnar Hoffman

  Hello everyone. I'll cut right to the chase. Right now I am developing a web based application. It has a PHP REST based architecture that serves up XML documents. On many of these documents attributes are hex encoded picture strings. On the client side jQuery AJAX fetches an XML document with a picture in it. I need to display said picture in some <img> tags. However my knowledge on such methods is lacking so here I am asking for help. Goal: JavaScript String variable in hex or base64 HTML displayed image. Cross browser is required, or a hack for the ones that do not support it is fine. Thanks, Gunnar

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• mediawiki markup equivalent of WMD live-previewing editor? (not WYSIWYG)

  - by Justin Grant

  Anyone have a recommendation for an editor like the WMD editor, but using MediaWiki markup instead of Markdown? Our site is already using MediaWiki markup but we want a slicker editor without changing markup completely. Requirements include: live preview of formatted text underneath the markup you're typing a toolbar for common formatting (bold, italic, links, bullets, numbered-list, code, etc) keyboard shortcuts for each toolbar button (e.g. CTRL+B for bold) Undo/redo via keyboard shortcuts (CTRL+Z/CTRL+Y) or toolbar buttons works well in the usual set of popular browsers (including IE6!) open-source would be preferred I've found a few options at http://www.mediawiki.org/wiki/WYSIWYG_editor, but all of these seem to be WYSIWYG editors which is not exactly what I want since full-on WYSIWYG editors tend to be bug-prone and complicate working at the markup level. Instead we want a plain-text markup editor with a client-side previewer, plus some UI niceties (toolbar, undo, keyboard shortcuts) to make editing markup easier.

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• Good book suggestions for building enterprise software

  - by ncoder

  Enterprise software are built using technologies/softwares/terminologies/APIs such as EJB, JBoss, Seam, Hibernate(JPA), Maven, Eclipse, Spring, JTS, JMS, JNDI etc. I know there are great books out there for each of these individually, however can someone suggest a book or two that covers all (or most of) these topics in lesser detail and gives examples of how these are integrated? I have intentionally left the client side stuff out because its highly unlikely a single book would cover that much. If anyone knows of a book (or books) that cover most of or various combinations (like EJB, Hibernate, Spring and Seam) of these technologies, please do suggest the same. The idea is not to become an expert in all however know about them in reasonable detail and why each one is required.

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• What is the ratio of Java programmers to C#.net programmers?

  - by Vaccano

  How many Java Programmers are there to every C# programmer? I have a coworker that says it was 3:1 (3 Java to 1 C#) but it is now more like 2:1 (2 java to 1 C#) Is this valid? Is there somewhere I could go for this info? Edit: This question needs to be a bit more limited in scope. I am referring to US programmers and those who would consider their career to be more focused in one side than the other. (If you are evenly balanced then you would cancel out.)

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• What is the best practice for mvc2 confirm password field?

  - by Andrey

  I have asked a similar question recently but getting no answers i am taking a step back with a more broad approach. I am looking to create a confirm password field using asp.net MVC2 that works on the client. All my other client validation is done with MicrosoftMvcValidation.js by just adding the Html.EnableClientValidation(); call. Some of my considerations. Should the confirm password be part of the model object? Using that approach i have created server side validation by creating my own model binder. Are there any projects out there that have done this?

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• Is it actually possible to connect to ActiveMQ via XMPP and query/browse queues using "AciveMQ.Agen

  - by Oleg Kiorsak

  I tried what I think are 4 most popular XMPP (aka "Jabber") clients (Spark, Pidgin, Psi, Pandion) to connect to ActiveMQ instance (Apache ActiveMQ ver. 5.3.0) on XMMP connector with an idea to use the "AciveMQ.Agent chatroom" for querying queues/etc and no success at all Some of them fail with 'Unknown error', some don't fail but kind of "hang"... interestingly, some communication does indeed reach the ActiveMQ side, because when I close a client it spits an exception "could not close" or something to that effect... and if I try "register new user" option (present on most clients" the ActiveMQ also spits some most cryptic warning message But I was never able to get to the point when I could see or specify "ActiveMQ.Agent" as chatroom and issue any commands... Before I waste any more time on this curious feature, I would like to hear whether anyone had any success with it? Thank you! PS: BTW, the book "ActiveMQ in Action book" http://www.manning.com/snyder/ shows that it is apparently works and is very easy using some Mac client (AdiumX), but I wanted it on a Windows PC ;)

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• How do I make these layers not overlap?

  - by Doug

  http://dougymak.com/jquery/test.html# I have three problems that I need help with. 1 ) When you click "More" on top right, it open a div #search and the background is being overlapped by the brown element below. I tried using z-index, but it didn't work. 2 ) I'm trying to make the div #search align directly beneath the "More", but upon setting the width of #search, it aligns to the left side. 3 ) When I hover over the navigation on the left, the popup is being overlapped by the text in the middle. I want the popup to be on top of the text.

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• Criteria for selecting software for embedded device

  - by Suresh Kumar

  We are currently evaluating Web servers for an embedded device. We have laid down the evaluation criteria for things like HTTP version, Security, Compression etc. On the embeddable side, we have identified the following criteria: Memory footprint Memory management (support for plugging in a custom memory manager) CPU usage Thread usage (support for thread pool) Portability What I want inputs on is: Are there any other criteria that an embeddable software should meet? What exactly does it mean when someone says that a software is designed for embeddable use? We currently have zeroed in on two Web servers: AppWeb Lighttpd (lighty) Feature wise, both the above Web servers seem to be on par. However, it is claimed that AppWeb is designed for embedded use while Lighttpd is not. To choose between the above two Web servers, what criteria should I be looking at?

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• I need help translating this portion of the ECMAScript grammar?

  - by ChaosPandion

  I've been working on my own implementation of ECMAScript for quite some time now. I have basically done everything by hand to help gain a deep understanding of the process. Repeated attempts to analyze and understand this portion of the grammar have failed so I've been working on the run time instead. Now I am at a point were I will be working on object literals so I really need to polish my syntactic analyzer. Can anyone put this in terms a language parser novice could understand? My biggest source of confusion is the following: new MemberExpression Arguments This is supposed to be a member expression, but this seemingly conflicts with the following: NewExpression : MemberExpression new NewExpression Is a new expression a member expression or a left hand side expression? To be honest I am having trouble laying out the proper C# classes for the concrete grammar. MemberExpression : PrimaryExpression FunctionExpression MemberExpression [ Expression ] MemberExpression . IdentifierName new MemberExpression Arguments NewExpression : MemberExpression new NewExpression CallExpression : MemberExpression Arguments CallExpression Arguments CallExpression [ Expression ] CallExpression . IdentifierName LeftHandSideExpression : NewExpression CallExpression

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• Syncing with Address Book: Last modified property in ABPerson/ABRecord

  - by Oliver

  I'm syncing data from the Address Book into a Core Data database and I've nearly got it working perfectly. The only issue remaining is checking for changes and modifications on startup and reflecting the changes inside Core Data. Currently, I simply check the ID of each ABRecord and see if it is already in Core Data. Of course, this only works in the case of new contacts and not changed information inside an existing contact. One solution would be to go through each contact already in the database and check each property against the Address Book. The down side of this is that it's really slow. One method that would work is if the ABRecord had a last modified date. I could then store the date inside the Core Data database and check on startup to see if I need to update the contact. However, I can't find anything like this in the documentation. Any ideas?

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• Handling session between two pages in iframe-based facebook app.

  - by Ray Yun

  I'm a newbie to iframe based facebook application and stuck with session related problems. There are just two pages in my app. First page got many fb_sig_* parameters from facebook platform but when I click a anchor to next page, those fb_sig_* were lost because this is just direct request from end user's browser not from facebook. So I found that http://forum.developers.facebook.com/viewtopic.php?id=52885. It was told that I should not using cookie and always append every fb_sig* to every anchor. This can be the only solution for my problems? Any side effect like session expiry problem?

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• Should I integrate FedEx or UPS into my Rails app?

  - by MikeH

  I'm working on integrating a shipping solution into a Rails ecommerce app. We're only going to use one shipping provider. So the question is: FedEx or UPS? I'm wondering what Rails developers think about the tech side of this question. What do you think about the APIs, ease of integration, focus on developer's needs between FedEx and UPS? I was leaning towards FedEx, but from looking at the developers resources sections of both sites, it seems that UPS might be more developer friendly. Also, I'm going to be using Shopify's active_shipping gem: http://github.com/Shopify/active_shipping And I also based my app off the Spree Ecommerce solution, but I don't think that's particularly relevant to the question. Spree wrote a wrapper to integrate active_shipping with the Spree system. Thanks.

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• AddThis Social SignIn and Django

  - by piokuc

  I am developing a Django website. I've been using django-registration for user registration so far but I would really like to allow users to login to my site using their Facebook, Twitter, Google, etc accounts. I am using addthis sharing buttons. I just noticed they introduced a social sign in solution. The idea seems great, you integrate your authentication system with their service once, and your users can login via all of the popular social networking sites. Has anybody integrated addthis social signin plugin with a django website? How can you use it along side django-registration? Are there any similar, alternative solutions?

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• Vim 80 column layout concerns

  - by cdleary

  I feel like the way I do 80-column indication in Vim is incorrect: set columns=80. At times I also set textwidth but I like to be able to see and anticipate line overflow with the set columns alternative. This has some unfortunate side effects -- I can't set number for fear of splitting between files that have different orders of line numbers; i.e. < 100 line files and = 100 line files will require two different set columns values because of the extra column used for the additional digit display. I also start new (g)Vim sessions instead of splitting windows vertically, which forces me to use the window manager's clipboard -- vsplits force me to do set columns every time I open or close a pane, so starting a new session is less hassle. How do you handle the 80-character indication when you want to set numbers, vertically split, etc.?

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• What Windows editor has CORRECT EOL whitespace handling?

  - by blueshift

  I'm looking for a Windows text editor for programming that handles EOL whitespace CORRECTLY, which for my idea of correct means: Strip all EOL whitespace on save, EXCEPT on lines that I haven't edited. This is to minimise the amount of EOL whitespace evil in my world, but not pollute SCM diff/blame with whitespace-only fixes (I have to deal with old / other people's code). I have played with TextPad, Notepad++, Kodomo Edit and Programmer's Notepad 2, and found all of them lacking. Also: I don't get along with vi, and I am unsure about Emacs on Windows. @Matti Virkkunen: I could mess with diff, but I want to fix the problem, not the symptoms. Fixing diff means all my, others, and server side diff tools need to be fixed, and doesn't fix space/noise/hash change issues in SCM. Example pet hate using that system: "update" tells me a file has changed. Diff shows no changes.

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• Debugging F# code and functional style

  - by Roger Alsing

  I'm new to funcctional programming and have some questions regarding coding style and debugging. I'm under the impression that one should avoid storing results from funcction calls in a temp variable and then return that variable e.g. let someFunc foo = let result = match foo with | x -> ... | y -> ... result And instead do it like this (I might be way off?): let someFunc foo = match foo with | x -> ... | y -> ... Which works fine from a functionallity perspective, but it makes it way harder to debug. I have no way to examine the result if the right hand side of - does some funky stuff. So how should I deal with this kind of scenarios?

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• Question about Linux Device Drivers.

  - by smwikipedia

  I have just installed the Xubuntu. My box runs quite slower than before when installed with a Win7. I am wondering if I am missing some device drivers. I can use gnome-device-manager to list my devices. In the device list view, I saw several blue question mark on the left side of devices. Based on my windows experience, the question mark should indicate the device is not properly configured. Is it the same with gnome-device-manager? And most importantly, how could I know for sure whether or not the corresponding device drivers have been installed? Many thanks.

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• Oracle - Is there any effects of not having a primary key on a table ?

  - by Sathya

  We use sequence numbers for primary keys on the tables. There are some tables where we dont really use the primary key for any querying purpose. But, we have Indexes on other columns. These are non-unique indexes. The queries use these non-primary key columns in the WHERE conditions. So, I dont really see any benefit of having a primary key on such tables. My experience with SQL 2000 was that, it used to replicate tables which had some primary key. Otherwise it would not. I am using Oracle 10gR2. I would like to know if there are any such side-effects of having tables that dont have primary key.

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• Can't get up with RIA demo: part 2

  - by Budda

  Here is a topic: http://stackoverflow.com/questions/2507734/cant-get-up-with-ria-demo where I've described problem with getting access to DomainContext object on the client. That time problem was resolved himself (without any actions from my side, with Visual Studio restart). At the moment, I had the same problem on another PC (Vista x64, VS2008, Silverlight 3.0, RIA Services Toolkit): ThomasDomainContext class that inherits DomainContext was not visible from the page's codebehind file. Again, it was resolved after VS restart and after that I got another problem: Error 1 'VfmElita.Web.ClientBin.ThomasDomainContext' does not contain a definition for 'employee' and no extension method 'employee' accepting a first argument of type 'VfmElita.Web.ClientBin.ThomasDomainContext' could be found (are you missing a using directive or an assembly reference?) D:\Project\Budda\VFMElita\VfmElitaSilverlightClient\MainPage.xaml.cs for the following lines of code (error is noticed for the 31st line): 30: var context = new ThomasDomainContext(); 31: grid1.ItemsSource = context.employee; 32: context.Load(context.GetEmployeeQuery()); Any help is welcome. P.S. Please note, that source code create on the 1st machine is successfully compilable and launchable

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• Cucumber vs. built-in testing? [Rails]

  - by yuval

  I asked a question about different testing frameworks yesterday. This question can be found here. Now that I have a better understanding of the different frameworks, I have a very simple question: With a basic understanding, but very limited experience with writing tests with rails' built in testing framework (basic assertions), would it be okay for me to jump directly to testing with RSpec, Webrat, and Cucumber? Thank you! As a side note: yes, this is an opinion based question, but I feel that the input received to this question is valuable enough to the community to keep this question open. Thanks.

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• 2 different php request at same time per user

  - by Oguz

  I have a website which has 2 pages , (home_page.php and action_page.php)Action page takes aprx. 2 minutes to completely load (server side takes 2 minutes) . But if user clicks to home page link while action page is loading , browser does not go to home page , until action page is completely loaded . First of all what is the reason of this ? (bowser ? php ? apache ?) and how can I avoid this ? Thank you

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• Designing a service for consumption on multiple mobile platforms

  - by Nate Bross

  I am building and designing a (mostly) read-only interface to some data. I'll be uing ASP.NET MVC to build a psudo-restful API. I'm wondering if anyone can provide some resources for building full-client applications for various mobile platforms, iPhone, Android, Blackberry, Windows Mobile, etc. I'm thinking that serving up XML data is going to be the most simple and universal, but parsing XML in objective-C for example doesn't sound like fun to me, but maybe there are some good libaries out there to help ease this task? In other words, what formt will be the quickest to implement on the client side? Are there any JSON parsrs for iPhone or Android? I know there are .NET JSON parsers, but not sure about other platforms -- is ther another format that might better? Or should I stick with pure XML and deal with it on each platform differently?

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• Get real image width and height with Javascript in Safari/Chrome?

  - by Frank Bannister

  I am creating a jQuery plugin. How do I get real image width and height with Javascript in Safari? Following works with Firefox 3, IE7 and Opera 9: var pic = $("img") // need to remove these in of case img-element has set width and height pic.removeAttr("width"); pic.removeAttr("height"); var pic_real_width = pic.width(); var pic_real_height = pic.height(); But in Webkit browsers like Safari and Google Chrome values are 0... Doing this on server side is not an option.

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• How to correctly open WCF service

  - by Sergej Andrejev

  Hi there, I'm using WCF client like this... var client = new TestClient(); try { response = service.Operation(request); } finally { try { if (client.State != CommunicationState.Faulted) client.Close(); } catch (Exception) { client.Abort(); } } but from time to time I get 500 HTTP error which is the only answer I get for next 15 minutes, then everything is back to normal for 15 minutes and so on. I know there is some load balancing stuff going on service side but guys there can't find any problems with it. That's why I started wondering am I using WCF service correctly. I already made a mistake once when I was using "using" to close service connection and I'm afraid I doing something wrong again. So can anybody say whether my way of calling WCF service is correct or not in all (event the most rare) circumstances?

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• WCF high instance count: anyone knows negative sideffects?

  - by Alex

  Hi there! Did anyone experience or know of negative side effects from having a high service instance count like 60k? Aside from the memory consumption of course. I am planning to increase the threshold for the maximum allowed instance count in our production environments. I am basically sick of severe production incidents just because "something" forgot to close a proxy properly. I plan to go to something like 60k instances which will allow the service to survive using default session timeouts at a call rate average for our clients. Thanks, Alex

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