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• Visualizing Undirected Graph That's Too Large for GraphViz?

  - by Gabe

  Hi Everyone, I was wondering if anyone has any advice for rendering an undirected graph with 178,000 nodes and 500,000 edges. I've tried Neato, Tulip, and Cytoscape. Neato doesn't even come remotely close, and Tulip and Cytoscape claim they can handle it but don't seem to be able to. (Tulip does nothing and Cytoscape claims to be working, and then just stops.) Does anyone have any ideas? I'd just like a vector format file (ps or pdf) with a remotely reasonable layout of the nodes. Thanks!

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• What is the fastest way to send 100,000 HTTP requests in Python?

  - by Igor G.

  Hello, I am opening a file which has 100,000 url's. I need to send an http request to each url and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure out how to write this program correctly. Has anyone come across a similar problem? I guess generally I need to know how to perform thousands of tasks in Python as fast as possible - I suppose that means 'concurrently'. Thank you, Igor

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• C# - Can FileHelper FieldConverter routines refer to other fields in the record?

  - by Pete

  I am using the excellent FileHelpers library to process a fixed-length airline schedule file. I have a date field, then a few fields later on in the record, a time field. I want to combine both of these in the FileHelpers record class, and know there is a custom FieldConverter attribute. With this attribute, you provide a custom function to handle your field data and implement StringToField and FieldToString. My question is: can I pass other fields (already read) to this customer FieldConverter too, so I can combine Date and Time together. FieldConverter has an implementation that allows you to refer to both a custom processing class AND 'other strings' or even an array of object. But, given this is done in the attribute definition, I am struggling to access this earlier-field reference. [FieldFixedLength(4)] [FieldConverter(typeof(MyTimeConverter),"eg. ScheduledDepartureDate")] public DateTime scheduledDepartureTime;

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• Drupal localhost redirecting to www.localhost.com

  - by AntonioCS

  Hey! I am working on a drupal site which I checked out (svn) to my localhost. Now the problem is that when I go to: http://www.site.com it all works fine, but when I go to: http://localhost/work/site I get redirected to http://www.localhost.com/work/site I have ran the install.php script and all works great. It reinstalls everything but when I go to the main site the redirect occurs. I removed the .htaccess file, didn't do anything. I am using windows 7 ultimate 64 (also tried on winxp pro 32) apache 2.2, php 5.2.13 Anyone know anyway to fix this? Thanks

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• Errno::EACCES: Permission denied - ./tmp/rspec_guard_result

  - by Evgeniy Gatsalov

  Trying settup rspec-guard-spork for learning app from http://ruby.railstutorial.org/ Using Ruby 2.0, Rails 4.0 on Windows7 ( I know :( ) When starting guard, get: 23:02:51 - ERROR - Guard::RSpec failed to achieve its <run_on_modifications>, exception was: > [#] Errno::EACCES: Permission denied - ./tmp/rspec_guard_result ... All gemfile, guardfile etc are edited according tutorial. Except 1) deleting win32console gem from gemfile because it turned console-out into a crap and raised an error. Permissions for a file is "F"(ull) for all cattegories: D:\WebDevelop\sample_appcacls tmp\rspec_guard_result D:\WebDevelop\sample_app\tmp\rspec_guard_result BUILTIN\Users:(ID)F NT AUTHORITY\Authenticated:(ID)F BUILTIN\Administrators:(ID)F NT AUTHORITY\system:(ID)F What additional info should I provide here?

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• TIBCO Designer - Active Database Error

  - by George

  Folks, I am with the following error when trying to start an instance of the Publish ActiveDatabase. I'm using Designer 5.7.2 and trying to access a database of SqlServer 2008. Someone saw this error before? I don´t find any reference in Google or other sites! Adaptador_M2M.Adaptador_M2M Error [Adapter] AEADB-910005 Startup Error. SDK Exception Code = AESDKC-0087, Category = Metadata, Severity = errorRole, Description = Class description not available for: ADB_PREREGLISTENER, File = C:/suren/workspace/Maverick/maverick-5.6.1-dev/libmaverick/MInstanceImpl.cpp, line = 71 received on starting the adapter after initialization. The Repository URL is D:\TEMP\AT_adadb_61214.dat and the Configuration URL is Corporativo/IntegracaoM2M/Adaptadores/Adaptador_M2M.

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• ExceptionPolicy.HandleException does not install Event Source for Logging in Registry if XBAP run ou

  - by Neo

  I am using the Logging Application Block (of Microsoft Enterprise Library) to log exceptions in the Event Viewer that occur in my WPF XBAP application. If I run the XBAP in the debugger from Visual Studio, an Event Source entry for my application is automatically created in the Registry at: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MyApp This occurs at the point ExceptionPolicy.HandleException() is called. However, if I run the XBAP outside of the IDE directly from the file system or from its published location, the Registry entry isn't added. Therefore, no logging takes place. I can only assume this is a security issue with running XBAP applications and they do not have access to write to the Registry. Is this a setting within my project? Any idea on why this might be happening? Any help much appreciated.

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• Django and ImageField Question

  - by Hellnar

  Hello I have a such model: Foo (models.Model): slug = models.SlugField(unique=True) image = models.ImageField(upload_to='uploads/') I want to do two things with this: First of all, I want my image to be forced to resize to a specific width and height after the upload. I have tried this reading the documentation but seems to getting error: image = models.ImageField(upload_to='uploads/', height_field=258, width_field=425) Secondly, when adding an item via admin panel, I want my image's file name to be renamed as same as slug, if any issue arises (like if such named image already exists, add "_" to the end as it used to do. IE: My slug is i-love-you-guys , uploaded image such have i-love-you-guys.png at the end.

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• Resizing JPEG image during decoding

  - by Thomas

  I'm working on a program that creates thumbnails of JPEG images on the fly. Now I was thinking: since a JPEG image is built from 8x8-pixel blocks (Wikipedia has a great explanation), would it be possible to skip part of the decoding? Let's say that my thumbnails are at least 8 times smaller than the original image. We could then map each 8x8 block in the input file to 1 pixel in the decoding output, by including only the constant term of the discrete cosine transform. Most of the image data can be discarded right away, and need not be processed. Moreover, the memory usage is reduced by a factor of 64. I don't want to implement this from scratch; that'll easily take a week. Is there any code out there that can do this? If not, is this because this approach isn't worthwhile, or simply because nobody has thought of it yet?

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• w3schools xsd example won't work with dom4j. How do I use dom4j to validate xml using xsds?

  - by HappyEngineer

  I am trying to use dom4j to validate the xml at http://www.w3schools.com/Schema/schema_example.asp using the xsd from that same page. It fails with the following error: org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'shiporder'. I'm using the following code: SAXReader reader = new SAXReader(); reader.setValidation(true); reader.setFeature("http://apache.org/xml/features/validation/schema", true); reader.setErrorHandler(new XmlErrorHandler()); reader.read(in); where in is an InputStream and XmlErrorHandler is a simple class that just logs all errors. I'm using the following xml file: <?xml version="1.0" encoding="ISO-8859-1"?> <shiporder orderid="889923" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test1.xsd"> <orderperson>John Smith</orderperson> <shipto> <name>Ola Nordmann</name> <address>Langgt 23</address> <city>4000 Stavanger</city> <country>Norway</country> </shipto> <item> <title>Empire Burlesque</title> <note>Special Edition</note> <quantity>1</quantity> <price>10.90</price> </item> <item> <title>Hide your heart</title> <quantity>1</quantity> <price>9.90</price> </item> </shiporder> and the corresponding xsd: <?xml version="1.0" encoding="ISO-8859-1" ?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:simpleType name="stringtype"> <xs:restriction base="xs:string"/> </xs:simpleType> <xs:simpleType name="inttype"> <xs:restriction base="xs:positiveInteger"/> </xs:simpleType> <xs:simpleType name="dectype"> <xs:restriction base="xs:decimal"/> </xs:simpleType> <xs:simpleType name="orderidtype"> <xs:restriction base="xs:string"> <xs:pattern value="[0-9]{6}"/> </xs:restriction> </xs:simpleType> <xs:complexType name="shiptotype"> <xs:sequence> <xs:element name="name" type="stringtype"/> <xs:element name="address" type="stringtype"/> <xs:element name="city" type="stringtype"/> <xs:element name="country" type="stringtype"/> </xs:sequence> </xs:complexType> <xs:complexType name="itemtype"> <xs:sequence> <xs:element name="title" type="stringtype"/> <xs:element name="note" type="stringtype" minOccurs="0"/> <xs:element name="quantity" type="inttype"/> <xs:element name="price" type="dectype"/> </xs:sequence> </xs:complexType> <xs:complexType name="shipordertype"> <xs:sequence> <xs:element name="orderperson" type="stringtype"/> <xs:element name="shipto" type="shiptotype"/> <xs:element name="item" maxOccurs="unbounded" type="itemtype"/> </xs:sequence> <xs:attribute name="orderid" type="orderidtype" use="required"/> </xs:complexType> <xs:element name="shiporder" type="shipordertype"/> </xs:schema> The xsd and xml file are in the same directory. What is the problem?

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• Play video in UIWebView from NSData

  - by Papagalli

  Hello there, Does anybody know how to play a video in a UIVebView ? The video comes from the iphone library, when I pick it, I store it in core data as binary data. If i use the local url of the video it's working fine, the problem I have is that the this url refers to a folder named "tmp", and I don't know the lifetime of it. If I can get the real url of the video file it will be ok. //attachment is the core data object containing the data NSURL *url = [NSURL URLWithString:attachment.path]; [self.webView loadRequest:[NSURLRequest requestWithURL:url]]; I tried a solution that doesn't work: (i tried MIMETypes : "video/quicktime" and "video/mp4") [self.webView loadData:attachment.data MIMEType:@"video/mov" textEncodingName:nil baseURL:nil]; I think the second solution is the closest, and the problem comes from the MIMEType. Thanks by advance if anybody has a solution for this :)

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• webclient methods not available to my Silverlight application

  - by mgkimsal

  Trying to do basic webclient data pull in C#, and the methods are not available in visualstudio, and the code is not compiling. //snip WebClient client = new WebClient(); byte[] resp = client.DownloadData(url); //snip Error 1 'System.Net.WebClient' does not contain a definition for 'DownloadData' and no extension method 'DownloadData' accepting a first argument of type 'System.Net.WebClient' could be found (are you missing a using directive or an assembly reference?) C:\Users\Michael\Documents\Visual Studio 2008\Projects\search2\search2\MainPage.xaml.cs I'm doing this in a c# file for a XAML/Silverlight project, but can't imagine why that would make a difference. I can not find any reference to this issue on the web, and I had something similar to this working last month, but in a regular ASP.NET page, not in a Silverlight app.

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• Toggle Wifi On/Off using MobileWifi private framework

  - by Ben Williams

  Hello, For a private project using the iPhone SDK (not for the app store), I would like to toggle wifi on & off. I've done something similar for Bluetooth, but can't find the required information for Wifi. I assume I need to use the MobileWifi framework. Can anyone give some directions and/or code? Most likely I expect I need a header file for the MobileWifi framework as well. Note once again, this is not for the app store, as Apple will not allow apps that use private frameworks such as this.

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• Unable to generate temporary class for web service

  - by sac

  I have an application with a proxy class for my webservice - This works fine in all 32-bit machines. However the same app throws an exception in windows server 2008 64-bit machine. It looks like the temporary class could not be generated for the web service. The error in the event viewer is "error CS0008: Unexpected error reading metadata from file '' -- 'Bad Key. ' Here's the call stack... at System.Xml.Serialization.Compiler.Compile(Assembly parent, String ns, XmlSerializerCompilerParameters xmlParameters, Evidence evidence) at System.Xml.Serialization.TempAssembly.GenerateAssembly(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace, Evidence evidence, XmlSerializerCompilerParameters parameters, Assembly assembly, Hashtable assemblies) at System.Xml.Serialization.TempAssembly..ctor(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace, String location, Evidence evidence) at System.Xml.Serialization.XmlSerializer.GetSerializersFromCache(XmlMapping[] mappings, Type type) at System.Xml.Serialization.XmlSerializer.FromMappings(XmlMapping[] mappings, Type type) at System.Web.Services.Protocols.SoapClientType..ctor(Type type) at System.Web.Services.Protocols.SoapHttpClientProtocol..ctor() at Fusion.ServiceCatalogProxy..ctor() I am not able to get any info about this bad key error....

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• Help converting java program to MapReduce job

  - by BigJoe714

  Hello, I would like to convert the following Java program to a MapReduce job. I have read about MapReduce and feel like this would be a good problem to solve using it, but I cannot figure out what to do. This basically loops through a directory of html files and parses them into a CSV file. http://www.joeharrison.com/bucket/2010/3/Main.java.txt http://www.joeharrison.com/bucket/2010/3/StringParser.java.txt Note: I am not trying to get someone else to do my work for me. I am using this as a learning experience. This will not be used for $$$profit$$$. If I have something that I created converted to a MapReduce job I feel it will provide a much easier way to learn then trying to follow an arbitrary tutorial. I posted this on Rentacoder several days ago, because I wanted to pay someone to convert it for me. But no one on rentacoder seems to know mapreudce!

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• Spring GAE/J Could Not find API version error

  - by Julie Paltrow

  Hello, I am trying to use Spring MVC 3 on GAE/J and I got this error and I do not know what it means, does anybody have an idea and perhaps give me pointers on how to fix this? May 21, 2010 9:50:23 AM com.google.appengine.tools.info.LocalVersionFactory getVersion INFO: Could not find API version from /opt/home/me/workspace/SpringMVC/war/WEB-INF/lib/.svn java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:114) at java.util.jar.JarFile.<init>(JarFile.java:133) at java.util.jar.JarFile.<init>(JarFile.java:97) at com.google.appengine.tools.util.ApiVersionFinder.findApiVersion(ApiVersionFinder.java:37) at com.google.appengine.tools.info.LocalVersionFactory.getVersion(LocalVersionFactory.java:65) at com.google.appengine.tools.info.UpdateCheck.getLocalVersion(UpdateCheck.java:112) at com.google.appengine.tools.info.UpdateCheck.checkForUpdates(UpdateCheck.java:91) at com.google.appengine.tools.info.UpdateCheck.doNagScreen(UpdateCheck.java:164) at com.google.appengine.tools.info.UpdateCheck.maybePrintNagScreen(UpdateCheck.java:132) at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:150) at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)

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• IntelliJ 9, Glassfish 2.1.1 & Maven2

  - by Xetius

  I have a Maven2 project which I am editing in IntelliJ IDEA 9.0.2. I am trying to build it and debug it within a Glassfish 2.1.1 container. This is only working sometimes. Occasionally it is giving me an error, telling me it can't deploy. Other times, it deploys, but does not run the filtering on the POM, not replacing a variable in the sun-web.xml file (and other container specific files) leaving it as ${targetenv} instead of replacing it with the value it should. I think I am missing something here, and have something very confused, but I have no idea what. Any help would be most gratefully received.

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• Netbeans not Deploying/Debugging

  - by Triztian

  Hello all, I have this problem, it's the second time it happens to me, I'm using the NB IDE 6.9.1 and after a while I was working fine, but then It stopped deploying my webapp when debugging or running the application, I don't recall messing with the ant build scripts or any strange configurations, it successfully builds the dist folder and *.war file and I am able to deploy it manually, but when I run it through the IDE it deletes the webapp folder webapps/myapp,so I cannot debug it or run it, all I get is ClassNotFoundException for my servlets. I am unsure of what extra information would help to solve this issue Its pretty annoying, I don't know how it got solved the last time, it just "went away" any help is truly appreciated.

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• eclipse debugger: attaching source-code of maven managed libraries

  - by meriton

  I'd like to use the source code of maven-managed dependencies when debugging our webapp in eclipse. I have managed to attach the sources to the libraries in the "Maven Managed Depedencies" classpath container, i.e. when I open a class file from a depedency (e.g. using Ctrl-Shift-T), I see the source code. However, when I launch the tomcat within eclipse, and execution halts on a breakpoint in that same class, the editor pane only displays the text "source not found", and a button to edit the "source lookup path". I have attempted to manually add the "Maven Managed Dependencies" classpath container, only to be told "Use maven project settings to configure depedency resolution". However, I see no useful setting in that property pane ... How can I attach those sources?

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• Can I can configure cxf to use a specific XML parser?

  - by CJS

  Is there a way to specify which XML parser cxf uses? Either through the cfx.xml file or programmatically? Our app has the Woodstox parser on its classpath, and cxf seems to be using that by default. However, the Woodstox implementation seems to truncate large Base64 encoded byte arrays in the SOAP packet. Removing Woodstox from the classpath eliminates this truncation problem, but that's not an option right now since other parts of our app also depends on Woodstox. It would be ideal if I could simply tell cxf to use another XML parser. Is this possible?

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• Using RegEx to replace invalid characters

  - by yeahumok

  Hello I have a directory with lots of folders, subfolder and all with files in them. The idea of my project is to recurse through the entire directory, gather up all the names of the files and replace invalid characters (invalid for a SharePoint migration). However, i'm completely unfamiliar with Regular Expressions. The characters i need to get rid in filenames are: ~, #, %, &, *, { } , \, /, :, <, ?, -, | and "" I want to replace these characters with a blank space. I was hoping to use a string.replace() method to look through all these file names and do the replacement. So far, the only code i've gotten to is the recursion. I was thinking of the recursion scanning the drive, fetching the names of these files and putting them in a List. Can anybody help me with how to find/replace invalid chars with RegEx with those specific characters?

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• ClassNotFoundException error in implementing Bayesian algorithm in Apache Mahout on Hadoop

  - by Shweta

  Hi, I have a problem in executing the Bayesian algorithm in Mahout. I built it with Maven and the job file is in target directory. When run from terminal using hadoop, I'm getting the ClassNotFoundException error. What should be done? $HADOOP_HOME/bin/hadoop jar mahout-core-0.3-SNAPSHOT.job org.apache.mahout.classifier.bayes.mapreduce.bayes.bayesdriver -i test -o output Exception in thread "main" java.lang.ClassNotFoundException: org.apache.mahout.classifier.bayes.mapreduce.bayes.bayesdriver at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.util.RunJar.main(RunJar.java:149)

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• ASP.NET url MAX_PATH limit

  - by Greg Ballard

  Hi, I've found an issue with ASP.NET that I know at least has stumped one other person out there. We were trying to use an HttpModule to handle wildcard requests to a web application. The generated url is dynamic and could potentially be several hundred characters long. Unfortunately there appears to be a limitation in the aspnet_isapi.dll file that limits the length of the path in the url to MAX_PATH which is hardcoded at 260 chars. Has anyone else ran into this and found a way around this limit? Query string parameters are not an option. Thanks, Greg Ballard

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• Callbacks in Thrift Asynchronous Functions?

  - by Roberto Aloi

  Hi all, In Thrift it is possible to use the oneway modifier to specify a call as asynchronous. Apparently, it's not possible to define a callback, though, to be executed when the execution of the function is completed. It seems that the only possibility I have is to give my Thrift client (PHP) some "server" capabilities, so that, when the heavy computation is completed on the server side, I can send a notification to it. This means that I should have a new .thrift file, with new definitions, new services and all the rest and that I should generate php-server side code with Thrift. Even if this is feasible, it looks like an overkill to me and I'm wondering if there's a more clever way to implement the callback. Looking forward for some feedback from you, guys.

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• Square Bullet in XSL-FO

  - by Igman

  I am attempting to create a list in XSL-FO using a square bracket. I have been able to get it working using the standard unicode bullet character (&#8226;) but I just can't seem to get it working for square brackets. I have tried using &#9632;, but that does not seem to work. It is important that i can get the square bullets working because I am matching an existing file format.Any help in getting this working would be greatly appreciated. <fo:list-item-label end-indent="label-end()"> <fo:block>&#x2022;</fo:block> </fo:list-item-label>

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