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• Intellij Community can't use http proxy for Maven

  - by MikeHoss

  I have Intellij IDEA Community installed on a Linux box that needs to use an authenticated proxy to get to the Internet. I have a system-wide proxy on the box that works, and I have the proxy configured in ~/.m2/settings.xml. Maven correctly uses the proxy when I run try it from the command-line. I have the same proxy configured within Intellij and it gives me the plugins listing correctly. But when I try to sync with the Maven repository withing Intellij I keep getting this: [WARNING] Unable to get resource 'org.codehaus.mojo:hibernate3-maven-plugin:pom:2.2' from repository restlet (http://maven.restlet.org): Authorization failed: Not authorized by proxy. I went to Settings-Maven and put in the proxy info as properties and that didn't work. I can see by looking at those settings that Intellij is reading my ~./m2/settings.xml fine because it knows where my local repo is (it's in a non-standard place). Anyone know how I can get this working?

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• nhibernate activerecord linq Contains problem

  - by Robert Ivanc

  Hi, I am having problems with the following query in Castle ActiveRecord 2.12: var q = from o in SodisceFMClientVAR.Queryable where taxnos2.Contains(o.TaxFileNo) select o; taxNos2 is an array of strings. When run I get an exception: + InnerException {"Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index"} System.Exception {System.ArgumentOutOfRangeException} StackTrace " at Castle.ActiveRecord.ActiveRecordBase.ExecuteQuery(IActiveRecordQuery query)\r\n at Castle.ActiveRecord.Linq.LinqResultWrapper`1.Populate()\r\n at Castle.ActiveRecord.Linq.LinqResultWrapper`1.GetEnumerator()\r\n at NHibernate.Linq.Query`1.GetEnumerator()\r\n at System.Linq.Buffer`1..ctor(IEnumerable`1 source)\r\n at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)\r\n at prosoft.skb.insolventnostDataAccess.InsolventnostDataAccAR.GetOurUsersListLS(ICollection`1 taxNos) in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataAccess\\InsolventnostDataAR.cs:line 214\r\n at prosoft.skb.insolventnostDataFromWS.InsolventnostFromWS.filterByOurUsers(IEnumerable`1 odprtiPostopki) in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataFromWS\\InsolventnostFromWS.cs:line 237\r\n at prosoft.skb.insolventnostDataFromWS.InsolventnostFromWS.SyncData() in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataFromWS\\InsolventnostFromWS.cs:line 53" string Does Contains even work in linq for nhibernate? I couldn't find anything via google... Is there a workaround? Thanks!

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• Installing PHPUnit via PEAR

  - by Ondrej Slinták

  I have problems installing PHPUnit 3.4.6 via PEAR 1.9.0. After I discover channel pear.phpunit.de and try to use one of following commands: pear install phpunit/PHPUnit pear install --alldeps phpunit/PHPUnit pear install --onlyreqdeps phpunit/PHPUnit it fails, giving me following error: No releases available for package "pear.phpunit.de/PHPUnit" install failed I found several threads from people with the same problem, but upgrading PEAR to the newest version usually worked for them. Also there seems to be close to no tutorials for installing PHPUnit for Windows. EDIT: I've also tried to change prefered_state to beta; didn't help. I've also tried to get list of all available packages: pear remote-list -c phpunit It gives me another error: Cannot download non-http URL "/c/categories.xml"

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• Does ActiveCollab subversion integration work with subversion over ssh?

  - by executor21

  I'm trying to setup a repository in an ActiveCollab project. During setup, it reports that the connection tests successfully. However, when I try to actually update the repository, I get the following message: Could not obrain the highest revision number for the given repository. If I try to browse the repository, the following error comes up: Fatal error: Call to a member function getRevision() on a non-object in /u/sites/activecollab/webroot/shared/activecollab/activecollab/application/modules/source/controllers/RepositoryController.class.php on line 357 Is this because of trying to access the repository via svn+ssh plugin rather than http? Or did something happen on the ActiveCollab end? The repository is accessed fine via other means -- only ActiveCollab has the problem.

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• Better Flex memory profiling tools

  - by verveguy

  Does anyone know of any better tools that the Flex Builder Profiler? I've googled and googled to no avail. While the FB tools are OK for small apps / small leak situations, they're nowhere near adequate for wading through the thicket of object references that can arise in a large scale Flex app (that is leaking memory heavily). In particular, any reasonably complex view structure ends up with huge numbers of parent/child object references to the top level view - none of which are at all relevant to finding the one or two refs from outside the parent child subgraph that are causing the whole bolus to be non-GC'able. If no one has any better suggestions, I'm seriously considering writing a tool to parse the saved profile dumps that Flex Builder can generate so that I can do my own "graph pruning" to find the important refs. If I go this route, collaboration would be welcome!

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• parsing a list and producing a structure of that

  - by qzar

  ;; structure representing homework points ;; nr: number - the number of the homework ;; points: number - the number of points reached (define-struct homework (nr points)) ;; parse-homework: (list of number pairs) -> (list of homework) ;; The procedure takes a list of number pairs and produces a list of homework structures ;; Example: (parse-homework (list (list 1 6) (list 2 7) (list 3 0))) should produce (list (make-homework 1 6) (make-homework 2 7) (make-homework 3 0)) (define (parse-homework homework-entries) (if (and (= (length (first homework-entries) 2))(= (length (parse-homework (rest homework-entries)) 2))) (make-homework (first homework-entries) (parse-homework (rest homework-entries))) (error 'Non-valid-input "entered list is not of length two")) ) (parse-homework (list (list 1 6) (list 2 7) (list 3 0))) This code produces the error length: expects 1 argument, given 2: (list 1 6) 2 I really appreciate every explanation that you can give me to get in in this scheme-stuff... Thank you very much

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• DirectX application doesn't work over Remote Desktop

  - by emddudley

  I have a WPF application which has a DirectX component within it. This component does not work over Remote Desktop--it just shows a corrupted image. The application works fine when not using Remote Desktop. In trying to debug the problem I installed the February 2010 DirectX SDK. Now, when I run the program on the computer with the SDK and Remote Desktop to it from a separate computer, the component works just fine. However the opposite does not work--trying to use the application over Remote Desktop when it is running on the computer without the DirectX SDK (it has the original problem with the corrupted image). I have already compared the loaded DLLs (using Process Explorer) between running the application on my SDK machine and non-SDK machine. They both are loading the same DLL versions. What else could be causing this behavior?

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• IPv6 multicast addresses: Is the Group ID field effectively 112 bits or 32 bits?

  - by Jeremy Friesner

  Hi all, I'm trying to understand the rules for choosing an IPv6 multicast address Group ID, and the RFC seems somewhat inconsistent. For example, in RFC 2373 section 2.7 this diagram is shown: | 8 | 4 | 4 | 112 bits | +------ -+----+----+---------------------------------------------+ |11111111|flgs|scop| group ID | +--------+----+----+---------------------------------------------+ ... but then in section 2.7.2 it shows this: | 8 | 4 | 4 | 80 bits | 32 bits | +------ -+----+----+---------------------------+-----------------+ |11111111|flgs|scop| reserved must be zero | group ID | +--------+----+----+---------------------------+-----------------+ So my question is, are the upper 80 bits of the Group ID field usable or not? If they are usable, is it only under certain circumstances (e.g. when using non-Ethernet networking technology?) What problems should I expect to experience if I set these bits when multicasting over an Ethernet LAN?

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• Java enums: Gathering info from another enums

  - by Samuel Carrijo

  I made a similar question a few days ago, but now I have new requirements, and new challenges =). As usual, I'm using the animal enums for didactic purposes, once I don't want to explain domain-specific stuff I have a basic enum of animals, which is used by the whole zoo (I can add stuff to it, but must keep compatibility): public enum Animal { DOG, ELEPHANT, WHALE, SHRIMP, BIRD, GIRAFFE; } I need to categorize them in a few, non-related categories, like gray animals (whale (my whale is gray) and elephant), small animals (bird, shrimp and dog), sea animals (whale and shrimp). I could, as suggested in my previous questions, add a lot of booleans, like isGray, isSmall and isFromSea, but I'd like an approach where I could keep this somewhere else (so my enum doesn't need to know much). Something like: public enum Animal { DOG, ELEPHANT, WHALE, SHRIMP, BIRD, GIRAFFE; public boolean isGray() { // What comes here? } } Somewhere else public enum GrayAnimal { WHALE, ELEPHANT; } How is this possible? Am I requesting too much from Java?

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• Infragistics WebScheduleInfo Sample code

  - by Woodmark

  I am working with Infragistics35.WebUI.WebSchedule.v8.2. I am not seeing any good documentation on this on the Infragistics Web site. Does anyone have any sample code I could see? I am trying to create a week view of the calendar. One that "Admins" can edit and the rest of the users can only view. I would love to have a different dblclick event fire based on role, so that a read only version of the activity would show for non admins. Is that possible? I'm just using an access db on the site in the App_Data directory. I really just needed (I thought) an out of the box solution. Cheers.

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• Making ehcache read-write for test code and read-only for production code

  - by Rick

  I would like to annotate many of my Hibernate entities that contain reference data and/or configuration data with @Cache(usage = CacheConcurrencyStrategy.READ_ONLY) However, my JUnit tests are setting up and tearing down some of this reference/configuration data using the Hibernate entities. Is there a recommended way of having entities be read-write during test setup and teardown but read-only for production code? Two of my immediate thoughts for non-ideal workarounds are: Using NONSTRICT_READ_WRITE, but I am not sure what the hidden downsides are. Creating subclassed entities in my test code to override the read-only cache annotation. Any recommendations on the cleanest way to handle this? (Note: Project uses maven.)

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• Emacs: selective c-auto-newline

  - by Yktula

  When c-auto-newline is set to non-nil, it re-indents the current line and inserts a carriage return and then indents the new line. However. I'm using 1TBS indent-style, which means if/else statements are made like this: if (n == 1) { exit(EXIT_SUCCESS); } else { perror("n"); } Also, I write do/while write loops like this: do { printf("%d\n", n++); } while (n < 64); As such, while I do want a newline automatically inserted after every opening brace and semicolon, I don't want newlines to be automatically inserted after an if statement or do loop is concluded with a closing brace. How can I have GNU Emacs (23.2.1, *nix) selectively insert newlines like that? Along the same lines, can I have Emacs insert an opening brace, a newline, and a closing brace on another newline, while putting the cursor in the middle of the two braces after closing parentheses following an if statement, function declaration, and the like?

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• Exposing a pointer in Boost.Python

  - by Goose Bumper

  I have this very simple C++ class: class Tree { public: Node *head; }; BOOST_PYTHON_MODULE(myModule) { class_<Tree>("Tree") .def_readwrite("head",&Tree::head) ; } I want to access the head variable from Python, but the message I see is: No to_python (by-value) converter found for C++ type: Node* From what I understand, this happens because Python is freaking out because it has no concept of pointers. How can I access the head variable from Python? I understand I should use encapsulation, but I'm currently stuck with needing a non-encapsulation solution.

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• Normal memory usage in Rails

  - by Erik

  I'm wondering how much memory usage is normal for a ruby process in a rails application? I really need something to benchmark against. In my dev environment WEBrick a single ruby process uses about 61mb to handle 10 simultaneous requests going non stop. In my prod environment Apache2+Passenger starts 7 ruby processes to handle the same ammount of requests. Each of those processes also use up about 60mb. Is this normal? Also, where do I configure how many ruby processes Passenger can start? Or will it start as many as there is memory available for? Thank you! ps. Using Rails3 beta. ds.

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• Has anyone compiled PCRE for Windows x64 - if so, how?

  - by Cheeso

  I'm trying to compile PCRE (v8.02) for Windows x64, using Vs2008. The "NON-UNIX-USE" file tells me to use cmake to generate a .sln fle. That works. When I run the build it succeeds, with 91 warnings. All appear to be size conversion warnings. Am I doing something wrong? Should I expect all these warnings? Has anyone else built PCRE for Windows x64, successfully, and without warnings?

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• Gitosis alternative?

  - by AndyL

  Are there alternatives to gitosis that are easier to use? I currently run gitosis on a Ubuntu server for my lab. We regularly add new users and repos. I find the gitosis.conf syntax non-intuitive, and if I make even a minor mistake the whole gitosis system fails, see for example this question on SO. When gitosis fails it also kills access to the git repository that contains gitosis.conf... go figure... There must be a better way. I've thought about private GitHub accounts, but is there anything else that I could host locally?

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• Finding the shortest path between two points on a grid, using Haskell.

  - by esperantist

  This is a problem that I can easily enough solve in a non-functional manner. But solving it in Haskell is giving me big problems. Me being inexperienced when it comes to functional programming is surely a reason. The problem: I have a 2D field divided into rectangles of equal size. A simple grid. Some rectangles are empty space (and can be passed through) while others are impassable. Given a starting rectangle A and a destination rectangle B, how would I calculate the shortest path between the two? Movement is possible only vertically and horizontally, in steps a single rectangle large. How would I go about accomplishing this in Haskell? Code snippets certainly welcome, but also certainly not neccessary. And links to further resources also very welcome! Thanks!

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• Good projects to learn OCaml and F#

  - by Yin Zhu

  After learning the basic syntax, reading some non-trivial code is a fast way to learn a language. We can also learn how to design a library/software during reading others' code. I have following lists. A Chess program in OCaml by Tomek Czajka. Hal Daumé has written several machine learning libraries in Ocaml. Including decision trees, logistic regression and SVM. All of them are near-production-quality code. A Chess Game Analysis program in F# in Microsoft Research. The above three are my favorites. Will you suggest some other sources? General purpose open source software are good, specialized open source like the three I list here are even more welcome.

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• What is the best way to remove accents in a python unicode string?

  - by MiniQuark

  I have a unicode string in python, and I would like to remove all the accents (diacritics). I found on the Web an elegant way to do this in Java: convert the unicode string to its long normalized form (with a separate character for letters and diacritics) remove all the characters whose unicode type is "diacritic". Do I need to install a library such as pyICU or is this possible with just the python standard library? And what about in python 3.0? Important note: I would like to avoid code with an explicit mapping from accented characters to their non-accented counterpart. Thanks for your help.

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• ItemsControl.ItemsSource MVVM perormance

  - by bitbonk

  I have an (non-virtualized) ItemsControl that binds its ItemsSource to a ObeservableCollection of ViewModel instances. Now once the large amount Model instances is loaded all the ViewModel complemnents needs to be added to that ObservableCollection. How can I add a large amount of ViewModels without making the UI Thread hang? I suppose the UI Thread hangs because each time a new item is added the ItemsControl needs to update itself and does layout etc. over and over again. Should I suspend the binding add all items and then resume? If so, how? Should I override the ObservableCollection to implement an AddRange so only 1 CollectionChanged Event is fired for adding multiple items? Or alternatively just replace the whole collection? Or is it better to add each items separately and call Dispatcher.Invoke for each item separately? So I would unblock frequently. How do you handle large dynamic lists that can not be virtualized?

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• python pdb not breaking in files properly?

  - by YGA

  Hi Folks, I wish I could provide a simple sample case that occurs using standard library code, but unfortunately it only happens when using one of our in-house libraries that in turn is built on top of sql alchemy. Basically, the problem is that this break command: (Pdb) print sqlalchemy.engine.base.__file__ /prod/eggs/SQLAlchemy-0.5.5-py2.5.egg/sqlalchemy/engine/base.py (Pdb) break /prod/eggs/SQLAlchemy-0.5.5-py2.5.egg/sqlalchemy/engine/base.py:946 Is just being totally ignored, it seems, by pdb. As in, even though I am positive the code is being hit (both because I can see log messages, and because I've used sys.settrace to check which lines in which files are being hit), pdb is just not breaking there. I suspect that somehow the use of an egg is confusing pdb as to what files are being used (I can't reproduce the error if I use a non-egg'ed library, like pickle; there everything works fine). It's a shot in the dark, but has anyone come across this before? Thanks, /YGA

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• m2eclipse workspace resolution

  - by Bartosz Radaczynski

  Hi all, I am using m2eclipse for managing maven projects in eclipse. It seems that in the previous release that I was using (0.9.8) the workspace resolution did not work at all, but right now it also does not work quite as I would expect. Namely, when the "resolve dependencied from workspace" setting for a project is not checked, the project turns red and cannot be build. The message says: artifact xxx x.y-SNAPSHOT cannot be found int local repository (or something to that extent). The trouble is that m2eclipse is putting information about workspace project into my local repo. Is there a way to change this behaviour? P.S. The workaround for this is to close the xxx project, then m2eclipse resolved the dependency to whatever version I've had previously in the local repository (i.e. the non-snapshot version).

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• How can I define custom 'contentGroups' in a custom Flex 4 component?

  - by swidnikk

  The spark panel component for example can be written like this And its skin file will handle layout of the contentGroup, controlBarGroup, and titleDisplay. Notice, however that the contentGroup is doesn't appear in the code above and that the controlBarGroup accepts child mxml components. Now say I want to create a custom component that defines various required and non-required skinparts, such as 'headerGroup', 'navigationGroup', and 'accountPreferencesGroup'. I'd like to write this custom component like this The motivation here is that I can now create a couple different skin files to change the look and layout of those subgroups. Reading source of the spark panel, there are some calls within the mx_internal namespace such as getMXMLContent() which is a method of the spark group component, but which I have no access to. Does the description above make sense? How can I create custom 'contentGroups' in my custom Flex4 component that can use nested mxml child components? Should I approach this a different way?

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• Does Sandcastle support Entity Framework Partial Classes?

  - by ChrisHDog

  I am attempting to use Sandcastle (and Sandcastle Help File Builder) to do some "auto-documentation" of some classes I am using. The classes that are giving me trouble are some partial classes on Entity Framework items that add methods and properties to those Framework items. The triple slash comments don't appear to come through on the methods and properties created in the partial classes. I have out how to get xml documentation of the base properties using the short summary and long description fields on the .emdx editor, but that doesn't provide a solution for the items in the partial classes. Is this possible? Is it perhaps just settings that I'm not setting correctly to pick up the partial classes? Does Sandcastle do partial classes in non-Entity Framework settings? Is what I'm doing even possible (has anyone else successfully used the xml created from triple slash comments to create documentation on entity framework partial classes, and if so how did you do that)? Any assistance is appreciated

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• WCF, net.tcp, and ASP.NET development server

  - by bryanjonker

  I'm setting up a net.tcp WCF service using instructions here: http://blogs.msdn.com/swiss_dpe_team/archive/2008/02/08/iis-7-support-for-non-http-protocols.aspx One of the steps says to do the following: "If you open the IIS7 management console and you look at the advance setting of our IIS7HostedService Web Application, you will see that in the Enabled Protocols section just http is defined. You now have to add net.tcp (separated by a comma), so that our service will be able to respond also to TCP requests." This is fine, but what if I want to use the Cassini / VS2010 ASP.NET development server to debug (hitting F5 or cntrl-F5)? I don't think there's a way to change the settings in that IIS. Or is there? Are other programmers just so awesome that they don't need to go through the debugger? Or do they use wsHttpBinding?

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