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• Implementing Autocompletion in iPhone UITextField for contacts in address book

  - by nacho4d

  Hi, I would like to have a UITextField or UITextView in where as I do some input, alternatives will appear something similar to when you type an address in Mail Application, alternatives appear down and is possible tap them so get a better input user interface.(since there is no need to type the complete word or address or phone number) I do know how to fetch data from Address Book framework, also how to input text in UITextField/UITextView and its delegates but I don't know what kind of structure to use for fetching and showing data as the user do his/her input. I know basic CoreData if this matters, I hope I can get some help. UPDATE (2010/3/10): I don't have problem make a native-like GUI but I am asking about the algorithm, does any body knows what kind algorithm is best for this thing? maybe some binary tree? Or should I just fetch data from coredata everytime? Thanks Ignacio UPDATE (2010/03/28): I've been very busy these days, so I have not tried UISearchResults but it seems fine to me. BUT I wonder was there a necessity of deletion of the wining answer? I don't think is fair my reputation went down and couldn't see the winning answer. ;(

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• Pre Commit Hook for JSLint in Mercurial and Git

  - by jrburke

  I want to run JSLint before a commit into either a Mercurial or Git repo is done. I want this as an automatic step that is set up instead of relying on the developer (mainly me) remembering to run JSLint before-hand. I normally run JSLint while developing, but want to specify a contract on JS files that they pass JSLint before being committed to the repo. For Mercurial, this page spells out the precommit syntax, but the only variables that seem to be available are the parent1 and parent2 changeset IDs involved in the commit. What I really want are a list of file names that are involved with the commit, so that I can then choose the .js file and run jslint over them. Similar issue for GIT, the default info available as part of the precommit script seems limited. What might work is calling hg status/git status as part of the precommit script, parse that output to find JS files then do the work that way. I was hoping for something easier though, and I am not sure if calling status as part of a precommit hook reflect the correct information. For instance in Git if the changes files have not been added yet, but the git commit uses -a, would the files show up in the correct section of the git status output as being part of the commit set? Update: I got something working, it is visible here: http://github.com/jrburke/dvcs_jslint/

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• A catalogue of Cassandra log messages: What is the correct interpretation?

  - by knorv

  The following is a complete catalogue of all log messages generated by Cassandra 0.6 when stress-testing a Cassandra installation over an extended period of time: AntiEntropyService: Sending AEService tree for (,) to: [] CassandraDaemon: Binding thrift service to localhost/N.N.N.N:N CassandraDaemon: Cassandra starting up... ColumnFamilyStore: has reached its threshold; switching in a fresh Memtable at CommitLogContext(file='.../cassandra/commitlog/CommitLog-N.log', position=N) ColumnFamilyStore: Enqueuing flush of Memtable()@N CommitLog: Discarding obsolete commit log:CommitLogSegment(.../cassandra/commitlog/CommitLog-N.log) CommitLog: Log replay complete CommitLog: Replaying .../cassandra/commitlog/CommitLog-N.log, ... CommitLogSegment: Creating new commitlog segment .../cassandra/commitlog/CommitLog-N.log CompactionManager: Compacted to .../cassandra/data//-N-Data.db. N/N bytes for N keys. Time: Nms. CompactionManager: Compacting [org.apache.cassandra.io.SSTableReader(path='.../cassandra/data//-N-Data.db'), ...] DatabaseDescriptor: Auto DiskAccessMode determined to be mmap GCInspector: GC for ConcurrentMarkSweep: N ms, N reclaimed leaving N used; max is N GCInspector: GC for ParNew: N ms, N reclaimed leaving N used; max is N Memtable: Completed flushing .../cassandra/data//-N-Data.db Memtable: Writing Memtable()@N SSTable: Deleted .../cassandra/data//-N-Data.db SSTableDeletingReference: Deleted .../cassandra/data//-N-Data.db SSTableReader: Sampling index for .../cassandra/data//-N-Data.db StorageService: Starting up server gossip SystemTable: Saved ClusterName found: Test Cluster SystemTable: Saved ClusterName not found. Using Test Cluster SystemTable: Saved Token found: N SystemTable: Saved Token not found. Using N For each of the log messages listed - what is the correct interpretation of the log message?

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• Using Freepascal\Lazarus JSON Libraries

  - by Gizmo_the_Great

  I'm hoping for a bit of a "simpletons" demo\explanation for using Lazarus\Freepascal JSON parsing. I've asked a question here but all the replies are "read this" and none of them are really helping me get a grasp because the examples are bit too in-depth and I'm seeking a very simple example to help me understand how it works. In brief, my program reads an untyped binary file in chunks of 4096 bytes. The raw data then gets converted to ASCII and stored in a string. It then goes through the variable looking for certain patterns, which, it turned out, are JSON data structures. I've currently coded the parsing the hard way using Pos and ExtractANSIString etc. But I'vesince learnt that there are JSON libraries for Lazarus & FPC, namely fcl-json, fpjson, jsonparser, jsonscanner etc. https://bitbucket.org/reiniero/fpctwit/src http://fossies.org/unix/misc/fpcbuild-2.6.0.tar.gz:a/fpcbuild-2.6.0/fpcsrc/packages/fcl-json/src/ http://svn.freepascal.org/cgi-bin/viewvc.cgi/trunk/packages/fcl-json/examples/ However, I still can't quite work out HOW I read my string variable and parse it for JSON data and then access those JSON structures. Can anyone give me a very simple example, to help getting me going? My code so far (without JSON) is something like this: try SourceFile.Position := 0; while TotalBytesRead < SourceFile.Size do begin BytesRead := SourceFile.Read(Buffer,sizeof(Buffer)); inc(TotalBytesRead, BytesRead); StringContent := StripNonAsciiExceptCRLF(Buffer); // A custom function to strip out binary garbage leaving just ASCII readable text if Pos('MySearchValue', StringContent) > 0 then begin // Do the parsing. This is where I need to do the JSON stuff ...

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• Issue with VS 2008 designer and usercontrol.

  - by Ram

  Hello, I have created a custom data grid control. I dragged it on windows form and set its properties like column and all & ran the project. It built successfully and I am able to view the grid control on the form. Now if i try to view that form in designer, I am getting following error.. Object reference not set to an instance of an object. Instances of this error (1) 1. Hide Call Stack at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.GetMemberTargetObject(XmlElementData xmlElementData, String& member) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.CreateAssignStatement(XmlElementData xmlElement) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.XmlElementData.get_CodeDomElement() at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.EndElement(String prefix, String name, String urn) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.Parse(XmlReader reader) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.ParseXml(String xmlStream, CodeStatementCollection statementCollection, String fileName, String methodName) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomParser.OnMethodPopulateStatements(Object sender, EventArgs e) at System.CodeDom.CodeMemberMethod.get_Statements() at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload) If I ignore the exception, form appears blank with no sign of grid control on it. However I can see the code for the grid in the designer file. Any pointer on this would be a great help.

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• System.EnterpriseServices.Wrapper.dll error

  - by Elaine

  this has driven me crazy, Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load file or assembly 'System.EnterpriseServices.Wrapper.dll' or one of its dependencies. (Exception from HRESULT: 0x800700C1) Source Error: Line 1: <%@ Application Codebehind="Global.asax.cs" Inherits="PMP.MvcApplication" Language="C#" % Yesterday, I shut up my WIN7, an windows update was pending there without any process for nearly one hour, then I shut my laptop . and when i re-opened my win7 and ran the PMP MVC application, this error occured. I finished that pending windows update. but no help. I googed to find that should re-install .net framework 1.1/2.1, i tried but nothing good happend, this error always here. I even spent 4 hrs to re-install vs2010, but still cannot solve this. If i need to re-install WIN7 for this , i will be crazy at all... How this happened? and how to overcome it? Thanks for your time..

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• jquery ajax call from link loaded with ajax

  - by Jay

  //deep linking $("document").ready(function(){ contM = $('#main-content'); contS = $('#second-content'); $(contM).hide(); $(contM).addClass('hidden'); $(contS).hide(); $(contS).addClass('hidden'); function loadURL(URL) { //console.log("loadURL: " + URL); $.ajax({ url: URL, type: "POST", dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contM).html(data); $(contM).animW(); } }); } // Event handlers $.address.init(function(event) { //console.log("init: " + $('[rel=address:' + event.value + ']').attr('href')); }).change(function(event) { $.ajax({ url: $('[rel=address:' + event.value + ']').attr('href'), type: "POST", dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contM).html(data); $(contM).animW(); }}); //console.log("change"); }) $('.update-main a').live('click', function(){ loadURL($(this).attr('href')); }); $(".update-second a").live('click', function() { var link = $(this); $.ajax({ url: link.attr("href"), dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contS).html(data); $(contS).animW(); }}); }); }); I'm using jquery and the 'addresses' plugin to load content with ajax and maintain pagination. The problem I'm having is some content loads with links which are intended to load content into a secondary window. I'm using the .live() method to allow jquery to listen for new links loaded into the primary content div. This works until the .ajax() method is called for these fresh links loaded with ajax, where the method begins, but follows the original link before data can be received. I'm assuming the problem is in the client-side scripting, but it may be a problem with the call made to the server. I'm using the wordpress loop to parse the url and generate the html loaded via jquery. Thanks for any tips!

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• InvalidOperationException (Lambda parameter not in scope) when trying to Compile a Lambda Expression

  - by Moshe Levi

  Hello, I'm writing an Expression Parser to make my API more refactor friendly and less error prone. basicaly, I want the user to write code like that: repository.Get(entity => entity.Id == 10); instead of: repository.Get<Entity>("Id", 10); Extracting the member name from the left side of the binary expression was straight forward. The problems began when I tried to extract the value from the right side of the expression. The above snippet demonstrates the simplest possible case which involves a constant value but it can be much more complex involving closures and what not. After playing with that for some time I gave up on trying to cover all the possible cases myself and decided to use the framework to do all the heavy lifting for me by compiling and executing the right side of the expression. the relevant part of the code looks like that: public static KeyValuePair<string, object> Parse<T>(Expression<Func<T, bool>> expression) { var binaryExpression = (BinaryExpression)expression.Body; string memberName = ParseMemberName(binaryExpression.Left); object value = ParseValue(binaryExpression.Right); return new KeyValuePair<string, object>(memberName, value); } private static object ParseValue(Expression expression) { Expression conversionExpression = Expression.Convert(expression, typeof(object)); var lambdaExpression = Expression.Lambda<Func<object>>(conversionExpression); Func<object> accessor = lambdaExpression.Compile(); return accessor(); } Now, I get an InvalidOperationException (Lambda parameter not in scope) in the Compile line. when I googled for the solution I came up with similar questions that involved building an expression by hand and not supplying all the pieces, or trying to rely on parameters having the same name and not the same reference. I don't think that this is the case here because I'm reusing the given expression. I would appreciate if someone will give me some pointers on this. Thank you.

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• What components and IDE add-ins do you install with Delphi?

  - by Mick

  After a clean install of Delphi, what components and IDE add-ins do you make certain that you install? What's your Delphi "rig"? Here's what I install after a clean installation: Delphi 2007 JCL / JVCL - JEDI Code Library and JEDI Visual Code Library (600+ components) JWA / JWSCL - JEDI API Library & Security Code Library GExperts - GExperts is a free set of tools built to increase the productivity of Delphi and C++Builder programmers by adding several features to the IDE. TWM's experimental GExperts code formatter - adds code formatting capabilities to Delphi Virtual TreeView - Virtual Treeview is a treeview control built from ground up. More than 5 years of development made it one of the most flexible and advanced tree controls available today. MustangPeak Components (EasyList View, Virtual ShellTools, etc) - EasyListview is a control that has no dependance on the Microsoft Listview control but has all the features of the latest version from Microsoft. Also includes 'Explorer.exe' like shell components. Synapse lightweight networking components - contains simple low level non-visual objects for easy programming without problems. (no required multi-threaded synchronization, no need for windows message processing,…) Great for command line utilities, visual projects, NT services EurekaLog - EurekaLog is a complete bug resolution tool for Delphi and C++Builder developers that gives your application the power to catch every exception and memory leak, directly on the end user PC, generating a detailed log of the call stack (with file, class, method and line number), optionally sending you a copy of each log entry via email or to a web bug-tracker. DelphiSpeedUp - DelphiSpeedUp is an IDE plugin for Delphi and C++Builder. It improves the IDE’s startup speed and increases the general speed of the whole IDE. DDevExtensions - DDevExtensions extends the Delphi/C++Builder IDE by adding some new productivity features. IDE Fix Pack - The IDE Fix Pack installs is a DLL-Expert that fixes the following RAD Studio 2007 bugs at runtime. All changes are done in memory. No file on disk is modified. TPerlRegex - Regular Expression library for Delphi How about other Delphi developers?

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• passing timezone from client (GWT) to server (Joda Time)

  - by Caffeine Coma

  I'm using GWT on the client (browser) and Joda Time on the server. I'd like to perform some DB lookups bounded by the day (i.e. 00:00:00 until 23:59:59) that a request comes in, with the time boundaries based on the user's (i.e. browser) timezone. So I have the GWT code do a new java.util.Date() to get the time of the request, and send that to the server. Then I use Joda Time like so: new DateTime(clientDate).toDateMidnight().toDateTime() The trouble of course is that toDateMidnight(), in the absence of a specified TimeZone, will use the system's (i.e. the server's) TimeZone. I've been trying to find a simple way to pass the TimeZone from the browser to the server without much luck. In GWT I can get the GMT offset with: DateTimeFormat.getFormat("Z").fmt(new Date()) which results in something like "-0400". But Joda Time's DateTimeZone.forID() wants strings formatted like "America/New_York", or an integer argument of hours and minutes. Of course I can parse "-0400" into -4 hours and 0 minutes, but I'm wondering if there is not a more straightforward way of doing this.

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• Need help regarding one LALR(1) parsing.

  - by AppleGrew

  I am trying to parse a context-free language, called Context Free Art. I have created its parser in Javascript using a YACC-like JS LALR(1) parser generator JSCC. Take the example of following CFA (Context Free Art) code. This code is a valid CFA. startshape A rule A { CIRCLE { s 1} } Notice the A and s in above. s is a command to scale the CIRCLE, but A is just a name of this rule. In the language's grammar I have set s as token SCALE and A comes under token STRING (I have a regular expression to match string and it is at the bottom of of all tokens). This works fine, but in the below case it breaks. startshape s rule s { CIRCLE { s 1} } This too is a perfectly valid code, but since my parser marks s after rule as SCALE token so it errors out saying that it was expecting STRING. Now my question is, if there is any way to re-write the production rules of the parser to account for this? The related production rule is:- rule: RULE STRING '{' buncha_replacements '}' [* rule(%2, 1) *] | RULE STRING RATIONAL '{' buncha_replacements '}' [* rule(%2, 1*%3) *] ; One simple solution I can think of is create a copy of above rule with STRING replaced by SCALE, but this is just one of the many similar rules which would need such fixing. Furthermore there are many other terminals which can get matched to STRING. So that means way too many rules!

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• easy_install ReviewBoard [Errno 104] Connection reset by peer

  - by blastthisinferno

  I have a Kubuntu 10.04 VM image and am trying to install ReviewBoard by following The Linux Installation Wiki. When I get to the step to easy_install ReviewBoard, I encounter a problem I cannot find a solution to. Below is the console output: sudo easy_install ReviewBoard Searching for ReviewBoard Best match: ReviewBoard 1.0.8 Processing ReviewBoard-1.0.8-py2.6.egg ReviewBoard 1.0.8 is already the active version in easy-install.pth Installing rb-site script to /usr/local/bin Using /usr/local/lib/python2.6/dist-packages/ReviewBoard-1.0.8-py2.6.egg Processing dependencies for ReviewBoard Searching for pytz Reading http://downloads.reviewboard.org/mirror/ Download error: [Errno 104] Connection reset by peer -- Some packages may not be found! Reading http://downloads.reviewboard.org/releases/ReviewBoard/1.0/ Download error: [Errno 104] Connection reset by peer -- Some packages may not be found! Reading http://pypi.python.org/simple/pytz/ Download error: [Errno 104] Connection reset by peer -- Some packages may not be found! Reading http://pypi.python.org/simple/pytz/ Download error: [Errno 104] Connection reset by peer -- Some packages may not be found! Couldn't find index page for 'pytz' (maybe misspelled?) Scanning index of all packages (this may take a while) Reading http://pypi.python.org/simple/ Download error: [Errno 104] Connection reset by peer -- Some packages may not be found! No local packages or download links found for pytz error: Could not find suitable distribution for Requirement.parse('pytz') I am new to python, but it seems like easy_install cannot decide on a version of pytz. I have read http://stackoverflow.com/questions/383738/104-connection-reset-by-peer-socket-error-or-when-does-closing-a-socket-resul http://homepage.mac.com/s_lott/iblog/architecture/C551260341/E20081031204203/index.html and it seems like the problem described in those articles has more to do with development than my problem, but I could be wrong. Has anyone encountered a problem like this? If there is any missing information that would help troubleshoot this, please let me know.

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• Windows Workflow Foundation - Application-Integrated Debugging

  - by user292103

  I've got a typical n-tier app that has a heavy workflow component to it, so I'm interested in using WWF. There's a server-side piece that runs as a Windows Service, and there's the client-side piece written in Silverlight. To have a really great, seamlessly integrated experience for my users, what I want is to incorporate both a workflow designer and a workflow debugger into the application. Not Visual Studio, but something tightly integrated right into the app itself. Using the Silverlight client, the user (probably more of a power user) can design workflows. But not only that, they can open a debugger from within the Silverlight client, set breakpoints (which are really remote breakpoints back to the Windows Service), catch in-process workflows, and step through them. Wouldn't that be great? I think I have some idea how I might go about incorporating an integrated designer (use a Silverlight diagramming component, save the diagram to .XAML, parse the .XAML to re-create the diagram, etc., etc.) but how on Earth would I do the debugger? I have no idea how I would do that part. Is there some kind of debugging support engineered into WWF?

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• Uploadify not working with ASP.NET WebForms

  - by João Guilherme

  Hi ! I'm trying to use Uploadify in a ASP.NET webforms project. The problem is that my script is not calling the generic handler. Here is the script. <input id="fileInput" name="fileInput" type="file" /> <script type="text/javascript"> $(document).ready(function() { $('#fileInput').uploadify({ 'uploader': '/Ferramenta/Comum/Uploadify/uploadify.swf', 'script': 'UploadTest.ashx', 'cancelImg': '/Ferramenta/Comum/Uploadify/cancel.png', 'folder': "/Ferramenta/Geral/", 'auto': true, 'onError': function(event, queueID, fileObj, errorObj) { alert('error'); }, 'onComplete': function(event, queueID, fileObj, response, data) { alert('complete'); }, 'buttonText' : 'Buscar Arquivos' }); }); </script> This is the code of the generic handler (just to test) using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services; using System.IO; namespace Tree.Ferramenta.Geral { public class UploadTest : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.Write("1"); } public bool IsReusable { get { return false; } } } } Any ideas ? Thanks !

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• Create your own custom browser

  - by ShoX

  Hi, I want to shape my own browser or at least modify a existing one so far that it meets my needs. I want a fast browser (starting and running, not necessarily faster rendering) without any stuff I don't use and simple productive navigation (like Firefox + Vimperator + Tree Style Tab), only much more integrated into each other and a different GUI. I was thinking about just looking into the current two top browsers chrome and firefox (open-source wise) and branch my own smaller version out of it. By just using WebKit or Gecko I will have to implement all the Connection-stuff, too, but I really am not interested in doing that. So my questions are: Does it make sense to start off with a current browser and strip off certain features and the frontend and replace it with my own code? Chrome or Firefox? Which one is less complex? I don't care much about Plugins and Extensions, so they aren't they pretty much even in features otherwise? Thanks for your answers p.s.: It's a just-for-fun at-home project, so please no "just use the browsers..."-stuff...

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• Sharp architecture; Accessing Validation Results

  - by nabeelfarid

  I am exploring Sharp Architecture and I would like to know how to access the validation results after calling Entity.IsValid(). I have two scenarios e.g. 1) If the entity.IsValid() return false, I would like to add the errors to ModelState.AddModelError() collection in my controller. E.g. in the Northwind sample we have an EmployeesController.Create() action when we do employee.IsValid(), how can I get access to the errors? public ActionResult Create(Employee employee) { if (ViewData.ModelState.IsValid && employee.IsValid()) { employeeRepository.SaveOrUpdate(employee); } // .... } [I already know that when an Action method is called, modelbinder enforces validation rules(nhibernate validator attributes) as it parses incoming values and tries to assign them to the model object and if it can't parse the incoming values  then it register those as errors in modelstate for each model object property. But what if i have some custom validation. Thats why we do ModelState.IsValid first.] 2) In my test methods I would like to test the nhibernate validation rules as well. I can do entity.IsValid() but that only returns true/ false. I would like to Assert against the actual error not just true/ false. In my previous projects, I normally use a wrapper Service Layer for Repositories, and instead of calling Repositories method directly from controller, controllers call service layer methods which in turn call repository methods. In my Service Layer all my custom validation rules resides and Service Layer methods throws a custom exception with a NameValueCollection of errors which I can easily add to ModelState in my controller. This way I can also easily implement sophisticated business rules in my service layer as well. I kow sharp architecture also provides a Service Layer project. But what I am interested in and my next question is: How I can use NHibernate Vaidators to implement sophisticated custom business rules (not just null,empty, range etc.) and make Entity.IsValid() to verify those rules too ?

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• using text and ntext SQL Datatypes in RPG

  - by David Stratton

  I'll preface this with saying that I'm a .NET developer, and am NOT an RPG developer. I'm working with one of our RPG developers to come up with a solution, so any suggestions you provide will get passed to him. We have a scenario where we want our iSeries to read from a SQL Server database. One of the columns is a TEXT column. IN RPG, there is no equivalent data type to use for this. We've gone back and forth on this, and our current plan is to change course, and have our SQL Server write out a text file, which the iSeries can pick up and parse. This is, however, a last resort option, as the data in the file is sensitive, and we'd like to avoid the additional security overhead. We've already got the SQL Server locked down as tight as possible (one user only has read access to this, and that user is an iSeries user.) We don't want to have to worry about transferring files back and forth. However, at this point, we see no other option. We have no in-house Java developers, and need to do this in RPG. So I'm wondering if there are any RPG developers out there who have faced this situation and have any advice.

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• Send and Receive JSON using RestClient and Sinatra

  - by lakshmanan

  Hi, I am trying to send a JSON data to a Sinatra app by RestClient ruby API. At client(client.rb) (using RestClient API) response = RestClient.post 'http://localhost:4567/solve', jdata, :content_type => :json, :accept => :json At server (Sinatra) require "rubygems" require "sinatra" post '/solve/:data' do jdata = params[:data] for_json = JSON.parse(jdata) end I get the following error /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/abstract_response.rb:53:in `return!': Resource Not Found (RestClient::ResourceNotFound) from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:193:in `process_result' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:142:in `transmit' from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/net/http.rb:543:in `start' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:139:in `transmit' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:56:in `execute' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:31:in `execute' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient.rb:72:in `post' from client.rb:52 All I want is to send JSON data and receive a JSON data back using RestClient and Sinatra..but whatever I try, I get the above error. I m stuck with this for 3 hours. Please help

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• Manual drag-drop operations in Flex

  - by Yarin

  This is a two-part problem: A) I'm implementing several irregular drag-drop operations in Flex (e.g. DataGrid ItemRenderer into Tree). My preference was modifying DragManager operations to meet my needs, and in fact using DragManager allows me to do everything I need, but I'm having serious issues with performance. For example, dragging anything over a many-columned DataGrid, whether the drag was initiated with DragManager.doDrag, or just using native ListBase drag-drop functionality, slows the drag movement to a crawl. Even if the DataGrid is disabled/ not listenening for any move/drag events, this happens. On the other hand, if the drag is initiated by calling .startDrag() on the Sprite, the drag is smooth and performs great over DataGrids and everything else. So part A would be: Is there a reason why .startDrag() operations work so well, while drags initiated through DragManager.doDrag suffer so badly when over certain components? B) If indeed the solution is to handle drag-drops using .startDrag(), how would I go about determining what component the mouse is over when the drag is released? In my example, my dragged object is brought up to the top level of the display list, and so is being moved around in stage coordinates. mouseMove, mouseOver events don't fire on the components I'm dragging over because the mouse is constantly over the dragged component, so I would need some sort of stage.coordinate - visibleComponentAtThatCoordinate conversion. Any thoughts on this? Thanks alot!-- Yarin

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• docs/examples on libxml2 type system?

  - by Wang

  I'm reading through the libxml2 API and examples on xmlsoft.com and having some real difficulty wrapping my head around the type system. For example, the _xmlAttribute struct has an xmlChar* field called name. This obviously refers to the name of the attribute (e.g., "bar" for the struct tied to the element <foo bar='baz' />). The _xmlAttribute struct also has a field called value, which I would expect to be "baz", except the type is xmlNodePtr. Um, what? I guess I could write up some test code and examine the memory in gdb, but there has to be an easier way. Has anyone written up examples of the data structures generated by a libxml2 parser? I'm looking for an English prose text, not generated documentation, that will walk me through the various types and the values they take when parsing some example bit of XML. Bonus points if it presents only the subset of libxml2 needed to read and write a config file---no namespaces or XPath or even modifying an existing document, just parse some XML, access the data, and then write it out again.

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• jQuery Drag/Drop problem: mousemove Event not binding for some elements

  - by saturdayplace

  Using the latest jQuery/UI that are hosted at Google. I've got the following markup: <ul id="tree"> <li><a href="1/">One</a></li> <li><a href="2/">Two</a></li> </ul> And the following javascript: $(document).ready(function(){ // Droppable callbacks function dragOver(overEvent, ui_object) { $(this).mousemove(function(moveEvent){ console.log("moved over", this); }); } function drop_deactivate() { $(this).unbind(); } function drag_out() { $(this).unbind(); } // Actual dragging $("#treeContainer li").draggable({ revert: true, revertDuration: 0 }); // Actuall dropping $("a").droppable({ tolerance: "pointer", over: dragOver, deactivate: drop_deactivate, out: drag_out }); }); If I drag the first li down over the second, the mousemove function fires (and firebug logs the output). But if I drag the second li up over the first, the mousemove function doesn't fire. You can see this live at http://jsbin.com/ivala. Is there a reason for this? Should I be trapping the mousemove event in some other way? Edit: It appears as thought the mousemove() event isn't binding for earlier elements than the one currently being dragged (should be bound upon their mouseover).

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• Twitter integration and iOS5: semantic and parsing issues

  - by Tyler

  I was using some of Apple's example code to write the Twitter integration for my app. However, I get a whopping amount of errors (mostly being Semantic and parse errors). How can this be solved? -(IBAction)TWButton:(id)sender { ACAccountStore *accountstore = [[ACAccountStore alloc] init]; //Make sure to retrive twitter accounts ACAccountType *accountType = [accountstore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter]; [accountstore requestAccessToAccountsWithType:accountType withCompletionHandler:^(BOOL granted, NSError *error) { if (granted) [{ NSArray *accountsArray = [accountstore accountsWithAccountType:accountType]; if ([accountsArray count] > 0) { ACAccount *twitterAccount = [accountsArray objectAtIndex:0]; TWRequest *postRequest = [[TWRequest alloc] initWithURL:[NSURL URLWithString:@"http://api.twitter.com/1/statuses/update.json"] parameters:[NSDictionary dictionaryWithObject:[@"Tweeted from iBrowser" forKey:@"status"] requestMethod:TWRequestMethodPOST]; [postRequest setAccount:twitterAccount]; [postRequest preformRequestWithHandeler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) { NSString *output = [NSString stringWithFormat:@"HTTP response status: %i", [urlResponse statusCode]]; [self preformSelectorOnMainThread:@selector(displaytext:) withObject:output waitUntilDone:NO]; }]; } }]; } //Now lets see if we can actually tweet -(void)canTweetStatus { if ([TWTweetComposeViewController canSendTweet]) { self.TWButton.enabled = YES self.TWButton.alpha = 1.0f; }else{ self.TWButton.enabled = NO self.TWButton.alpha = 0.5f; } }

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• ps forrest for session id

  - by azatoth

  Often I want to get a nice readout what process are running and their relationship; I usually by habit runs ps auxfww and eventual grep for the process in question. Having been thinking about the problem I tried to create an oneliner to get the process tree in ps ufww format for all processes which has the session id specified by arbitrary process name(s); ending up in following code: ps ufww --sid=$(ps -C apache2 -o sess --no-headers | sort | uniq | grep -v -E '^ +0$' | awk 'NR==1{x=$0;next}NF{x=x","$0};END{gsub(/[[:space:]]*/,"",x);print x}') giving for example following output: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 4157 0.0 0.1 41264 3120 ? Ss Jun11 0:00 /usr/sbin/apache2 -k start www-data 4329 0.0 0.0 41264 1976 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4330 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4331 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4332 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4333 0.0 0.0 41264 2032 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6648 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6654 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6655 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start I do wonder now if anyone has an better idea to solve this issue? Are there anything out there that is easier to "oneline" and gives above or better information? For example I would actually want to have included all childs relative any parent. (uncertain if this should be on SF instead, but felt it was more like an programming question)

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• RapidXML, reading and saving values

  - by Layne

  Hello, I've worked myself through the rapidXML sources and managed to read some values. Now I want to change them and save them to my XML file: Parsing file and set a pointer void SettingsHandler::getConfigFile() { pcSourceConfig = parsing->readFileInChar(CONF); cfg.parse<0>(pcSourceConfig); } Reading values from XML void SettingsHandler::getDefinitions() { SettingsHandler::getConfigFile(); stGeneral = cfg.first_node("settings")->value(); /* stGeneral = 60 */ } Changing values and saving to file void SettingsHandler::setDefinitions() { SettingsHandler::getConfigFile(); stGeneral = "10"; cfg.first_node("settings")->value(stGeneral.c_str()); std::stringstream sStream; sStream << *cfg.first_node(); std::ofstream ofFileToWrite; ofFileToWrite.open(CONF, std::ios::trunc); ofFileToWrite << "<?xml version=\"1.0\"?>\n" << sStream.str() << '\0'; ofFileToWrite.close(); } Reading file into buffer char* Parser::readFileInChar(const char* p_pccFile) { char* cpBuffer; size_t sSize; std::ifstream ifFileToRead; ifFileToRead.open(p_pccFile, std::ios::binary); sSize = Parser::getFileLength(&ifFileToRead); cpBuffer = new char[sSize]; ifFileToRead.read( cpBuffer, sSize); ifFileToRead.close(); return cpBuffer; } However, it's not possible to save the new value. My code is just saving the original file with a value of "60" where it should be "10". Rgds Layne

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• array retain question

  - by Cosizzle

  Hello, im fairly new to objective-c, most of it is clear however when it comes to memory managment I fall a little short. Currently what my application does is during a NSURLConnection when the method -(void)connectionDidFinishLoading:(NSURLConnection *)connection is called upon I enter a method to parse some data, put it into an array, and return that array. However I'm not sure if this is the best way to do so since I don't release the array from memory within the custom method (method1, see the attached code) Below is a small script to better show what im doing .h file #import <UIKit/UIKit.h> @interface memoryRetainTestViewController : UIViewController { NSArray *mainArray; } @property (nonatomic, retain) NSArray *mainArray; @end .m file #import "memoryRetainTestViewController.h" @implementation memoryRetainTestViewController @synthesize mainArray; // this would be the parsing method -(NSArray*)method1 { // ???: by not release this, is that bad. Or does it get released with mainArray NSArray *newArray = [[NSArray alloc] init]; newArray = [NSArray arrayWithObjects:@"apple",@"orange", @"grapes", "peach", nil]; return newArray; } // this method is actually // -(void)connectionDidFinishLoading:(NSURLConnection *)connection -(void)method2 { mainArray = [self method1]; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { mainArray = nil; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [mainArray release]; [super dealloc]; } @end

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