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  • ASP webservice serialization of properties

    - by badra
    I got a class like this which gets returned from an ASP webservice: class Data { public int A { get; set; } public int B { get; set; } public int Sum { get { return A + B; } } } When I try to consume the webservice on the client side using Silverlight I only get the properties A and B but I also need Sum. I know I can't return any logic from a webservice, so the expected behavior was it will return the the Sum as a fixed/precalculated property in the client which is what I need. Any ideas except for redesigning my class? Thanks ...

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  • WPF Books in 2010

    - by notJim
    I'm looking to learn WPF, and I'd like to get a book to help in the process. Most of the popular questions on SO regarding actual books are from 2008, and I wanted to see if recommendations for books had changed at all. WPF Unleashed, which seems to be the most popular recommendation, was published in 2006, which is quite a while ago, with the lightening-quick pace that Microsoft has been following with .NET. Does this book still work? For some background, I'm a web developer (using MVC, so MVVM makes sense to me conceptually), looking to make the jump to desktop development. I did C# a while ago, but I'll be picking up a separate C# book to get up to speed on that. I am not interested in Silverlight. I am not necessarily interested in flashy UIs right now, as I'm working on business software but what I am interested in is good, clean, intuitive user interfaces.

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  • Socket Programming for the Web

    - by Benny
    I have to interact with a legacy system that accepts socket communication and messages. My goal is to make the application cross-platform, but I need the ability to push messages to the client (i.e. - .NET's WCF, Java's Comet) and detect when the user closes out of their browser to destroy the socket. I have built a prototype of .NET wrapper + WCF + Silverlight but it is so disconnected it is difficult to manage the state of the user and seems to be a nightmare to support. All of that considered, what would be my best option?

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  • Tutorial on Consuming a WCF service in ASP.Net web site?

    - by Robert
    I'm attempting to create my first WCF service. I've created the service and now I'm trying to call it from a asp.net (vb) web site and I've tried adding a web reference to it and using the scvutil.exe to consume the service. So far neither have worked. It's not letting me declare the service in my code. If someone could point me to a good tutorial on how to consume a WCF service in an ASP.Net web site that would be great. I've found numorous on how to use them with AJAX or silverlight or windows apps but nothing on using it in just a plain old website.

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  • Why does GetExportedValues<T>() no longer work after using the .net 4 final version of MEF?

    - by BigJason
    I have been developing a managed extensibility framework application for the last several months using the community preview. I have been using the GetExportedValues() method and the PartCreationPolicy(CreationPolicy.NonShared) to fake a class factory (since only the silverlight version supports a factory). This was working great until I upgraded the project to use .net 4.0. There is no error, it just doesn't work. So why did this code stop working? The code follows: The factory method: public static IEnumerable<DataActionBase> GetActionsFromDirectory(string PluginsFolder) { IEnumerable<DataActionBase> result = null; var catalog = new DirectoryCatalog(PluginsFolder); var container = new CompositionContainer(catalog: catalog); result = container.GetExportedValues<DataActionBase>(); return result; } Example Export Class: [Export(typeof(DataActionBase))] [PartCreationPolicy(CreationPolicy.NonShared)] public class AnAction : DataActionBase { .... }

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  • Automatic images translation to 3d model

    - by farrakhov-bulat
    I'm quite interested in automatic images translation to 3d models. Not really for commercial product, but from the point of possible academic research and implementation. What I'd like to achieve is almost transparent for user process of transformation series of images (fewer is better) to 3d model which might be shown in flash/silverlight/javafx or similar. Consider online furniture store with 3d models of all items in stock. Kinda cool to have ability to see the product in 3d before purchasing it. I managed to find a few pieces of software, like insight3d, but it couldn't be used in my case I guess. So, are there any similar projects or tips for me? If it would require to write that piece of software - I'd really love to dig into research on this field.

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  • How do I get a Horizontal ListBox to scroll horizontally in WP7?

    - by Steve Steiner
    I'm attempting to use the code below to make a horizontal listbox in WP7 silverlight. The items appear horizontally but the scrolling is still vertical. Am I doing something wrong in wpf? Is this a WP7 specific bug?. <Style TargetType="ListBox" x:Name="HorizontalListBox"> <Setter Property="ItemsPanel"> <Setter.Value> <ItemsPanelTemplate> <VirtualizingStackPanel Orientation="Horizontal" IsItemsHost="True" CanHorizontallyScroll="True" CanVerticallyScroll="False"/> </ItemsPanelTemplate> </Setter.Value> </Setter> </Style>

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  • partially connected application using asp.net 3.5 (not mobile apps)

    - by Hari
    We had a requirement to build a ASP.NET 3.5 web application using web forms, WCF, ADO.NET and SQL Server. The users would connect via Internet. Recently we understood that it is possible that users would often remain disconnected and would have Internet access intermittently. I need to understand if we can create occasionally connected web application using asp.net 3.5 - what all technologies/features we need to use? Is MS Sync Framework the answer to the problem - is it a viable option to use with web application? Is windows application the right approach instead of web applications - where the business logic would be run at the client itself, using local SQL Express editions with data then been synced up with Enterprise SQL server at server end when connection is established using replication and/or MS Sync framework. In that case is there a need to use WCF? Does Silverlight applications help in this context -building paritally connected web apps? Really appreciate if you can give pointers to how to go about this task of creating .net partially connected apps (not mobile apps)?

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  • For what purposes have YOU used T4?

    - by Chris Melinn
    T4 has existed for several years in Visual Studio, but doesn't get a lot of attention. However, for those that know it, there seems to be some very creative and useful purposes. I am researching some different ways that T4 is used, and I would appreciate to hear how YOU may have used it for real life scenarios. I am primarily interested in non-standard and creative uses. Some interesting examples: Phil Haack uses T4 to create static CSS files from .less To Generate WPF and Silverlight Dependency Properties using T4 Templates Note: I realize this is a discussion-oriented question, but the answers could be helpful to others. I have tagged it as subjective and also marked as "community wiki", so please allow the question to remain open. Thanks!

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  • Ajax image upload and javascript edit on the fly with ASP.NET MVC (without saving to disk)

    - by gavss
    1) Uploadimage action gets requests from form posts. <form action="/content/uploadimage" method="post" enctype="multipart/form-data"> It reads HttpPostedFileBase stream data and sends it to the response. I need to show the image in a div container instead of sending it to the response as a file so that users can manipulate the image using jcrop. Image source is generated at runtime. I can't pass an action name to the src attribute. Is this possible using MVC and without using control viewstate? 2) I don't want to use flash or silverlight. Is there an easy ajax alternative to the method I use to get files from user?

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  • How to create a shape acting like a textbox?

    - by subho100
    Please refer this control http://www.charlespetzold.com/blog/2009/10/Using-Text-Outlines-in-Silverlight.html The formattedtext control is a shape which helps to generate the shape of the text with proper geometry. I would like to make this control act like a text box with cursors and features like typing in from keyboard. Right now I use an invisible text box with a formattedtext control to act like that. But the cursor position always creates a problem when the size of the text is not equal to the size of the rendered text as shape. Can anyone please show the way to achieve this.

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  • Easy Threading in WPF

    - by Sandeep Bansal
    Hi everyone, I've been reading a lot about threading in C#, WPF and Silverlight but can't get it to work. My main problem is I have the _load (_Initialized) action and it has a lot of object creation and along with that I have timers working doing different things, this causes the startup time of the program to be very slow and obviously causes the UI to hang and it isn't a good thing for deploying to a lot of users. My timers change values of labels and textfields but having them do that on another thread is an obvious no go. So can someone give me some examples on how to achieve what I need to do? Thanks

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  • Java and C# : how to decide

    - by Andrea
    I'm working in a company where i work on environment. Net; I found another company that offered me a job where, however, programming in Java. I do not know Java and want to understand what are the differences. With the. NET framework I can build Windows Forms applications, web (asp.net and asp.net MVC), Silverlight (also for the 7 Series phones), WPF, WCF services and more and I have also Intellisense and ReSharper. In java? It 'a language that has a future? You what would you do? Thanks

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  • Secure Webservice?

    - by cam
    I'm trying to create a secure webservice (that provides simple database data) with PHP that can be connected to through my Silverlight application. I don't know enough about PHP to be able to see another way to do this. The webservice should only be accessible through the client, and only with the proper username/password. The only two ways I can imagine to do this would be by passing the username/password hash via URL, or use a "hidden form" and do it via POST_. I'm just trying to get past this point, I'm the sole developer on this project and I'm just trying to get past this PHP webservice part so I can get back to being an application programmer :) Normally, I would learn PHP, but I'm on the clock, so I'm just looking for a point in the right direction on how to achieve this!

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  • Custom Windows AMI for Amazon EC2

    - by cutyMiffy
    Hello: I am new to the Amazon EC2 services and I am planning to host a Windows based vm on Amazon. I have lot of fuzziness about AMIs on Amazon. So my first question would be, am I be able to install softwares and frameworks(e.g. Silverlight, .NET, etc) on a existing Windows instance that I select? And if not, how can I create a custom AMI so that I can install these softwares that I need before I submit it to Amamzon and launch? Thanks a lot for your help :) Deeply appriciated

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  • How to send Message from Windows Azure Application?

    - by TheBond
    Hello I am getting my hands on windows azure platform and i have deployed few silverlight applications on azure. I learnt a little about Service Bus which seems like used for sending messages. In my application i want to send some message to a mobile phone (GSM SIM) ? How can i send message to GSM Mobile using windows azure ? any tutorials, code etc ? also can i communicate from one ip address to mobile phone ? or vice versa ? any tutorial or guidence ? and please excuse me if i asked a rubbish question but i need some starting point :-( Thanks

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  • :from parameter in active record find not well designed?

    - by potlee
    i got this error: SQLite3::SQLException: no such column: apis.name: SELECT * FROM examples WHERE ("apis"."name" = 'deep') my code Api.find :all, :from => params[:table_name], :conditions => {:name => 'deep' } I need to make a back end rails application which will be used by a silverlight application. one of the requirements is to fetch simple data from the database. i need to be able to query different tables with the same code.(my app has 2000 tables!) i think it does not make sense for rails to put in "apis" in the WHERE clause. is there any speciic reason for this?

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  • ANTLR: using stringTemplate

    - by Kevin Won
    (I'm a Noob with Antlr)... I'm having difficulties getting my grammar with StringTemplates. Basically I'm trying to write a little DSL. I can get my grammar the way I want (it parses correctly), but I can't get the generation of the target code to work with templates. So here's a snippet of my grammar: grammar Pfig; options { output=template; language=CSharp2; } conf : globalName ; globalName : 'GlobalName:' ID -> localConf(name ={$ID.text}) ; I simplified it quite a bit just to get the essence across. Basically, when the lex/parse comes across `GlobalName: Foo' I want it to spit out text based on the StringTemplate called 'localConf'. Super straightforward. So now, let's fire up the parser in a test app and have it process an input file. // C# processing a file with the lex/parser. // the 'app.pfig' file just has one line that reads 'GlobalName: Bla' using (FileStream fs = File.OpenRead("c:\\app.pfig")) { PfigParser parser = new PfigParser(new CommonTokenStream( new PfigLexer(new ANTLRInputStream(fs)))); using (TextReader tr = File.OpenText("./Pfig.stg")) { parser.TemplateLib = new StringTemplateGroup(tr); } var parseResult = parser.conf(); string code = parseResult.Template.ToString(); // Fail: template is null } I can step through the parser code and see that it correctly identifies my text and applies the stringTemplate correctly. The problem is that since this 'globalName' rule is a subrule of 'conf' it doesn't get executed directly--the method just finds it and returns. But the calling 'Conf' method does not keep the return value from the subrule--it goes to thin air. This means that my resultant template on the last line is null. If I get rid of the 'conf' rule in my grammar and call 'globalName' directly, it will work (since it's the only rule on the stack). But I obviously want more than one rule. I've generated the parser in Java and it does the same thing: // antlr generated parser code public PfigParser.conf_return conf() // throws RecognitionException [1] { PfigParser.conf_return retval = new PfigParser.conf_return(); try { { PushFollow(FOLLOW_globalName_in_conf30); globalName(); // <- it calls globalName() but doesn't keep the return. state.followingStackPointer--; } retval.Stop = input.LT(-1); } // snip It's simple to see I don't get some basic concept with how the Template approach is supposed to work with Antlr. I'm quite sure this is my problem but I'm a loggerheads to know what I'm doing wrong... the examples I've seen don't really show real-world template emission of code.

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  • help with xml parsing using php

    - by fayer
    i've got following example xml: <entity id="1"> <name>computer</name> <type>category</type> <entities> <entity id="2"> <name>mac</name> <type>category</type> </entity> <entity id="3"> <name>linux</name> <type>category</type> <entities> <entity id="4"> <name>ubuntu</name> <type>category</type> </entity> <entity id="5"> <name>redhat</name> <type>category</type> <entities> <entity id="6"> <name>server</name> <type>category</type> </entity> <entity id="7"> <name>desktop</name> <type>category</type> </entity> </entities> </entity> </entities> </entity> </entities> </entity> if i've got an id, lets say 5. is it possible to retrieve the following: the name of the entity with the id=5 (redhat) ALL the child entities and their name and id (server/6 and desktop/7) all the parent entities and their name and id (computer/1, mac/2 and linux/3) im a noob on parsing xml. is this accomplished by xpath only or xquery/xpath? i would appreciate if someone could give me some example code to do this with simplexml. thanks!

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  • Flash -> ByteArray -> AMFPHP -> Invalid Image !??

    - by undefined
    Hi, Im loading images into Flash and using JPGEncoder to encode the image to a ByteArray and send this to AMF PHP which writes out the bytearray to a file. This all appears to work correctly and I can download the resulting file in Photoshop CS4 absolutely fine. When i try to open it from the desktop or open it back in Flash it doesnt work... Picasa my default image browser says "Invalid" Here is the code i use to write the bytearray to a file - $jpg = $GLOBALS["HTTP_RAW_POST_DATA"]; file_put_contents($filename, $jpg); That's it ... I use the NetConnection class to connect and call the service, do I need to say Im sending jpg data? I assumed that JPGEncoder took care of that. How can I validate the bytearray before writing the file? Do I need to set MIME type or something .. excuse the slightly noob questions, a little knowledge can be a dangerous thing. Thanks --------------------------------------- PART II ------------------------------------------ Here is some code - 1) load the image into Flash player item.load(); function _onImageDataLoaded(evt:Event):void { var tmpFileRef:FileReference=FileReference(evt.target); image_loader=new Loader ; image_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, _onImageLoaded); image_loader.loadBytes(tmpFileRef.data); } function _onImageLoaded(evt:Event):void { bitmap=Bitmap(evt.target.content); bitmap.smoothing=true; if (bitmap.width>MAX_WIDTH||bitmap.height>MAX_HEIGHT) { resizeBitmap(bitmap); } uploadResizedImage(bitmap); } function resizeBitmap(target:Bitmap):void { if (target.height>target.width) { target.width=MAX_WIDTH; target.scaleY=target.scaleX; } else if (target.width >= target.height) { target.height=MAX_HEIGHT; target.scaleX=target.scaleY; } } function uploadResizedImage(target:Bitmap):void { var _bmd:BitmapData=new BitmapData(target.width,target.height); _bmd.draw(target, new Matrix(target.scaleX, 0, 0, target.scaleY)); var encoded_jpg:JPGEncoder=new JPGEncoder(90); var jpg_binary:ByteArray=encoded_jpg.encode(_bmd); _uploadService=new NetConnection(); _uploadService.objectEncoding=ObjectEncoding.AMF3 _uploadService.connect("http://.../amfphp/gateway.php"); _uploadService.call("UploadService.receiveByteArray",new Responder(success, error), jpg_binary, currentImageFilename); } Many thanks for you help

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  • Jruby Gems-in-a-jar issue

    - by antonio
    Hi all, I am trying to write some code in ruby (using jruby) to be compiled to java bytecode with jrubyc and deployed to a remote machine where it will be run on the JVM (no ruby available there). Everything works fine as long as I am happy to stick with the standard jruby library. As explained on the jruby website, I simply copy the jruby-complete.jar library to the remote machine and include it in the classpath at runtime. I fire my compiled script and it works: cool! The problems start when I need some other libraries (typically rubygems) to run my script. I am aware of cool stuff like rawr, -which I successfully tested- to put together all you need in a single package. However that is not the solution I am looking for: I will have many small scripts to run independently and I don't want each of them to grow to at least 10 MB just because I insanely include the jruby-complete.jar in each of them. What I would like is to compile a .jar for each of the libraries that I will need to use, put all of them in a common folder on the remote machine and include them at runtime in the classpath when I run my compiled jruby scripts on the JVM. This said, I tried to follow the instructions here: http://blog.nicksieger.com/articles/2009/01/10/jruby-1-1-6-gems-in-a-jar I tried exactly the example shown there, with the "chronic" gem. Going step by step: Install the gem locally: java -jar jruby-complete-1.1.6.jar -S gem install -i ./chronic chronic --no-rdoc --no-ri Package it into a jar: jar cf chronic.jar -C chronic . Write a two lines test script, saving it as testt.rb: require 'chronic' Chronic.parse('tomorrow') Compile with: jrubyc testt.rb Run the resulting java class testt.class with the following (having both jruby-complete.jar and chronic.jar in the same folder as the java class): java -cp .:/jruby-complete.jar:./chronic.jar testt I get the following error: Exception in thread "main" file:/Users/ave2/NetBeansProjects/jrubywatir/lib/jruby-complete.jar!/METAINF/jruby.home/lib/ruby/site_ruby/shared/builtin/core_ext/symbol.rb:1:in `const_missing': uninitialized constant Chronic (NameError) from testt.rb:2 ...internal jruby stack elided... from Module.const_missing(testt.rb:2) from (unknown).(unknown)(:1) I really don't understand what I am doing wrong, and I am totally stuck on this. I am a noob in Ruby, much more used to Python: don't miss a chance to convert an infidel! :-) Thanks.

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  • mysql error using Rails-- Please help

    - by Cypher
    Alright I am sry for the noob question but this has been driving me up a wall-especially because I got it to work yesterday and I can't remember what I did.... I am just trying to use mysql with rails with a mongrel server. I set up the server fine and can run rails applications that don't need mysql but when I create a project using (for example) rails -d mysql blog and then create some simple controller e.g. ruby script/generate Test then put this code in the controller... class TestController < ApplicationController def index render :text => 'WORK' end end then when I start the server up and open up localhost:3000/test I get the following error: = Booting Mongrel = Rails 2.3.5 application starting on http://0.0.0.0:3000 = Call with -d to detach = Ctrl-C to shutdown server /!\ FAILSAFE /!\ Mon May 10 20:15:06 -0500 2010 Status: 500 Internal Server Error Can't connect to MySQL server on 'localhost' (10061) C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/mysql_adapter.rb:589:in 'real_connect' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/mysql_adapter.rb:589:in 'connect' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/mysql_adapter.rb:203:in 'initialize' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/mysql_adapter.rb:75:in 'new' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/mysql_adapter.rb:75:in 'mysql_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:223:in 'send' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:223:in 'new_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:245:in 'checkout_new_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:188:in 'checkout' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:184:in 'loop' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:184:in 'checkout' C:/Ruby/lib/ruby/1.8/monitor.rb:242:in 'synchronize' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:183:in 'checkout' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:98:in 'connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_pool.rb:326:in 'retrieve_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_specification.rb:123:in 'retrieve_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapter s/abstract/connection_specification.rb:115:in 'connection' etc... In the browser i get a 'We're sorry, but something went wrong' Does anyone know what I am doing wrong?

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  • CSS Background-Images Loading after HTML Images (Involves Javascript)

    - by Kevin C.
    I threw together a quick little microsite that you can see at http://monterraauction.com. If you don't have a super-fast connection (and nothing's cached), the very last items to load are the background-images that are used for CSS image-text replacement (primarily, that h1#head at the top, with a 7kb background image). Nothing debilitating, but it looks slightly awkward. And I'm asking this question as a matter of curiosity more than anything else ;) Also, please note that this occurs in Firefox, but not Chrome. Now, underneath the h1#head I have a jquery.cycle.lite-powered slideshow in div#photo. In the HTML markup there are a total of 13, heavy image files that make up each of the slides. If I remove all but the first slide, then the problem goes away! So the CSS background-images are loading after...those HTML images are done? But here's what's confusing: I check it out in YSlow...the CSS background-images have a much lower response time than all of the slides in #photo. Right after all the JS files finish loading, in fact. So why aren't they showing up first? I tried $('#photo img:last-child').load(function() { alert('Locked and Loaded!')});, but the background-images pop up a while before the alert does, so I'm assuming it's not waiting until the last slide has loaded (admittedly I'm a bit of JS noob so maybe I'm just making a wrong assumption). I also tried commenting out all the jquery.cycle.lite stuff, so that I knew I didn't have any JS manipulating the DOM elements in #photo, but that wasn't the problem. I tried putting all the JS at the bottom of the document, right before </body>, but that didn't work. Lastly, I tried turning off javascript, and of course the css background-image loads way before the images in #photo, so it's definitely a JS thing (amirite?) I guess the obvious solution here is to mark the slides up as LINKS rather than IMGs, and have Javascript insert those 12 extra slideshow images after the DOM is ready--users without javascript shouldn't need to download the extra images anyways. But again, I'm curious: Why does removing the extra HTML images from within #photo solve the problem? And why are the CSS background-images showing up after the HTML images have loaded, even though YSlow says the css background-images loaded first? Seeing as how it happens in FF but not Chrome, is it simply a browser issue? I appreciate any insight you guys could give me!

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  • jQuery hide ul header when all entries are deleted...

    - by Scott
    I'm a noob with jQuery...and I hope I've explained this well enough; I have a <ul> header that appears when I've added an entry to a dynamically created list using $.post. Each entry added has a delete/edit button associated with it. Header is this: <ul class="header"> <li>Month</li> <li>Year</li> <li>Cottage</li> </ul> My dynamic list that is created: <ul class="addedItems"> <li>Month</li> <li>Year</li> <li>Cottage</li> <li><span class="edit">edit</span></li> <li><span class="del">delete</span></li> </ul> This all looks like this: Month Year Cottage <--this appears after I've added an entry -------------------------------- and I want it to stick around unless all items are deleted. Dec 1990 Fir edit/delete <--entries Jan 2000 Willow edit/delete My question is: Is there some kind of conditional that I can use with jQuery to hide the class="header" if all the items are deleted? I've read up on conditional statements like is and not with jq but I'm not really understanding how they work. All of the items in class="addedItems" is stored in data produced by JSON. This is the delete function: $(".del").live("click", function(){ var del = this; var thisVal = $(del).val(); $.post("delete.php", { dirID : thisVal }, function(data){ if(confirm("Are you sure you want to DELETE this entry?") == true) { if(data.success) { //hide the class="header" here somwhere?? $(del).parents(".addedItems").hide(); } else if(data.error) { // throw error if item does not delete } } }, "json"); return false; }); //end of .del function Here is the delete.php <?php if($_POST) { $data['delID'] = $_POST['dirID']; $query = "DELETE from //tablename WHERE dirID = '{$data['delID']}' LIMIT 1"; $result = $db->query($query); if($result) { $data['success'] = true; $data['message'] = "Entry was successfully removed."; } else { $data['error'] = true; $data['message'] = "Item could not be deleted."; } echo json_encode($data); } ?>

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  • Performance of tokenizing CSS in PHP

    - by Boldewyn
    This is a noob question from someone who hasn't written a parser/lexer ever before. I'm writing a tokenizer/parser for CSS in PHP (please don't repeat with 'OMG, why in PHP?'). The syntax is written down by the W3C neatly here (CSS2.1) and here (CSS3, draft). It's a list of 21 possible tokens, that all (but two) cannot be represented as static strings. My current approach is to loop through an array containing the 21 patterns over and over again, do an if (preg_match()) and reduce the source string match by match. In principle this works really good. However, for a 1000 lines CSS string this takes something between 2 and 8 seconds, which is too much for my project. Now I'm banging my head how other parsers tokenize and parse CSS in fractions of seconds. OK, C is always faster than PHP, but nonetheless, are there any obvious D'Oh! s that I fell into? I made some optimizations, like checking for '@', '#' or '"' as the first char of the remaining string and applying only the relevant regexp then, but this hadn't brought any great performance boosts. My code (snippet) so far: $TOKENS = array( 'IDENT' => '...regexp...', 'ATKEYWORD' => '@...regexp...', 'String' => '"...regexp..."|\'...regexp...\'', //... ); $string = '...CSS source string...'; $stream = array(); // we reduce $string token by token while ($string != '') { $string = ltrim($string, " \t\r\n\f"); // unconsumed whitespace at the // start is insignificant but doing a trim reduces exec time by 25% $matches = array(); // loop through all possible tokens foreach ($TOKENS as $t => $p) { // The '&' is used as delimiter, because it isn't used anywhere in // the token regexps if (preg_match('&^'.$p.'&Su', $string, $matches)) { $stream[] = array($t, $matches[0]); $string = substr($string, strlen($matches[0])); // Yay! We found one that matches! continue 2; } } // if we come here, we have a syntax error and handle it somehow } // result: an array $stream consisting of arrays with // 0 => type of token // 1 => token content

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