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  • Kanban vs. Scrum

    - by Andrew Siemer
    Can someone with Kanban experience tell me how Kanban and Scrum differ? What are the pro's and con's of each of the different project management methodologies? Kanban seems to be getting a lot of press these days. I don't want to miss the hottest new way of tracking my teams failures (...and successes). Responses @S. Lott - What part of this article wasn't clear enough? infoq.com/articles/hiranabe-lean-agile-kanban/…. Do you have a more specific question? That is a great article but technically no it is not clear enough. That article gives a great amount of detail about kanban (and thank you for it...good read) but it does not specifically contrast Kanban vs. Scrum. That article will help someone like me make a decision but it most certainly won't help someone like my boss or in general someone less experienced! I was hoping for a quick overview of kanban pros and cons contrasted to scrum pros and cons. Thanks though! @S. Lott - Why do you say kanban vs. scrum? What leads you to conclude they are conflicting approaches? Can you make your question more specific? I don't think that they are necessarily conflicting. But they are different enough for a user to adhere to one over the other. Perhaps one fits a project or company better than the other? How would I sell one over the other when presenting a project management approach. Say I went to a company that was currently stuck in the rutt that is "water fall" - why would I sell one approach over the other?

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  • R and version control for the solo data analyst

    - by Jeromy Anglim
    Many data analysts that I respect use version control. For example: http://github.com/hadley/ See comments on http://permut.wordpress.com/2010/04/21/revision-control-statistics-bleg/ However, I'm evaluating whether adopting a version control system such as git would be worthwhile. A brief overview: I'm a social scientist who uses R to analyse data for research publications. I don't currently produce R packages. My R code for a project typically includes a few thousand lines of code for data input, cleaning, manipulation, analyses, and output generation. Publications are typically written using LaTeX. With regards to version control there are many benefits which I have read about, yet they seem to be less relevant to the solo data analyst. Backup: I have a backup system already in place. Forking and rewinding: I've never felt the need to do this, but I can see how it could be useful (e.g., you are preparing multiple journal articles based on the same dataset; you are preparing a report that is updated monthly, etc) Collaboration: Most of the time I am analysing data myself, thus, I woudln't get the collaboration benefits of version control. There are also several potential costs involved with adopting version control: Time to evaluate and learn a version control system A possible increase in complexity over my current file management system However, I still have the feeling that I'm missing something. General guides on version control seem to be addressed more towards computer scientists than data analysts. Thus, specifically in relation to data analysts in circumstances similar to those listed above: Is version control worth the effort? What are the main pros and cons of adopting version control? What is a good strategy for getting started with version control for data analysis with R (e.g., examples, workflow ideas, software, links to guides)?

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  • OCR: How to improve accuracy - existing libraries for removing non-text 'furniture', shapes, etc to

    - by Rob
    I want to remove rectangles etc that enclose text in a screenshot image, so that I can perform optical character recognition to get accurate text from the screenshot. Background: I doing this to extract data from a legacy application for use with other applications. This is the only way to get at this data as associated files are in a closed, proprietary, binary format. I will be using AutoItScript to drive the application to show data in its UI, then I will screenshot this and feed this to tesseract. I've already had some success in automating the UI, and have been able to use tesseract to get plain ascii text out of the bitmap. There are several AutoItScripr forum articles discussing its use with tesseract/OCR but not specifically for my question. http://www.autoitscript.com/forum/index.php?s=6c32c3ece12756e635a619cdf175eff9&showforum=2 What I need to do There are thin, 1-pixel wide rectangles that closely enclose some text, when fed to tesseract, it sees them as I for example for a verticle line of the rectangle. Any thoughts on how to remove the rectangles, or best practices? I'm asking if there is a generic command line based toolset to overwrite rectangles, for example, in .png files. I could then pass the .png through this, then pass it to tesseract. Details on the tesseract release/setup I've used are as follows: Go here: http://code.google.com/p/tesseract-ocr/downloads/list - For the basic english generic character set to get Tesseract up and running and recognising your bitmapped text into ascii text, use tesseract-2.00.eng.tar.gz (current version at time of writing is: "English language data for Tesseract (2.00 and up) Jul 2007 989 KB 84845") Related questions I have already looked at on Stack Overflow http://stackoverflow.com/questions/1335581/how-to-give-best-chance-of-success-to-an-ocr-software http://stackoverflow.com/questions/2296568/analysis-and-transformation-of-the-image-on-the-basis-of-this-analysis-for-better http://stackoverflow.com/questions/2268028/reading-characters-off-of-the-screen In these, my question is not completely answered or a commercial solution is being sold. I do not want to consider a commercial solution at this stage.

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  • How can I use external expressions in Linq with EF4 (and LINQKit)?

    - by neo
    I want to separate out often used expressions in linq queries. I'm using Entity Framework 4 and also LINQKit but I still don't know how I should do it the right way. Let me give you an example: Article article = dataContainer.Articles.FirstOrDefault(a => a.Id == id); IEnumerable<Comment> comments = (from c in container.Comments where CommentExpressions.IsApproved.Invoke(c) select c); public static class CommentExpressions { public static Expression<Func<Module, bool>> IsApproved { get { return m => m.IsApproved; } } } Of course the IsApproved expression would be something much more complicated. The problem is that the Invoke() won't work because I didn't call .asExpandable() from LINQKit on container.Comments but I can't call it because it's just an ICollection instead of an ObjectSet. So my question is: Do I always have to go through the data context when I want to include external expressions or can I somehow use it on the object I fetched (Article)? Any ideas or best practices? Thanks very much! neo

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  • Finding and Printing all Links within a DIV

    - by Abs
    Hello all, I am trying to find all links in a div and then printing those links. I am using the Simple HTML Dom to parse the HTML file. Here is what I have so far, please read the inline comments and let me know where I am going wrong. include('simple_html_dom.php'); $html = file_get_html('tester.html'); $articles = array(); //find the div the div with the id abcde foreach($html->find('#abcde') as $article) { //find all a tags that have a href in the div abcde foreach($article->find('a[href]') as $link){ //if the href contains singer then echo this link if(strstr($link, 'singer')){ echo $link; } } } What currently happens is that the above takes a long time to load (never got it to finish). I printed what it was doing in each loop since it was too long to wait and I find that its going through things I don't need it to! This suggests my code is wrong. The HTML is basically something like this: <div id="abcde"> <!-- lots of html elements --> <!-- lots of a tags --> <a href="singer/tom" /> <img src="image..jpg" /> </a> </div> Thanks all for any help

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  • OutOfMemoryError: Java heap space error when start solr

    - by Hamid
    Hi I start indexing DB articles with solr, but after add about 58 million article (and about 113 GB size of disk) , i get below error message on tomcat log error Note1: i already set Init memory pool to 256MB, and Max memory pool:1400MB to tomcat server. Note2: I can post or search article but must wait over 3 min for get response. 8-apr-2010 14:27:07 org.apache.solr.common.SolrException log SEVERE: java.lang.OutOfMemoryError: Java heap space at org.apache.lucene.util.PriorityQueue.initialize(PriorityQueue.java:89) at org.apache.lucene.search.HitQueue.<init>(HitQueue.java:67) at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:113) at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:37) at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:42) at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:40) at org.apache.lucene.search.TopScoreDocCollector.create(TopScoreDocCollector.java:100) at org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:979) at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:884) at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:341) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:182) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527) at java.lang.Thread.run(Unknown Source) What's problem ? Have any suggestion ? Thanks in advanced

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  • thesis in LaTeX without memoir

    - by yCalleecharan
    Hi, I'm preparing a thesis report in LaTeX. I don't want to use the memoir class as I would like total control. I have two questions: My thesis consists of an introduction and then a series of articles pasted one after the other. Thus each article has its own abstract, introduction, etc... and a bibliography at its end. I understand that perhaps a package like multibib can help when we have multiple bibliographies. The idea that I came with is to write each article separately and then use pdfpages to combine the final document. Long time ago dvi files concatenation was popular but with graphics I think that pdfpages is better. I saw that another package exists, named combine which can help with what I am doing. I'm still exploring my options. Any suggestions? If I decide to use a book class instead to make my thesis resemble more into a book-like format which is better, then using the book class format gives me section headings like 0.1 Introduction with the leading 0. This 0 doesn't show in the article class format. How to change this default book class numbering format so that I'll have e.g. 1. Introduction? Thanks a lot...

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  • Does the WMI event Win32_VolumeChangeEvent work on Windows XP

    - by Christian Rodemeyer
    I'm trying to use the following c# code to detect the attached/removed event of usb mass storage devices. I'm using the Win32_VolumeChangeEvent. // Initialize an event watcher and subscribe to events that match this query var _watcher = new ManagementEventWatcher("select * from Win32_VolumeChangeEvent"); _watcher.EventArrived += OnDeviceChanged; _watcher.Start(); void OnDeviceChanged(object sender, EventArrivedEventArgs args) { Console.WriteLine(args.NewEvent.GetText(TextFormat.Mof)); } The problem is that this works fine on Vista but it doesn't work on XP at all (no events received). The Microsoft documentation says that this should work (http://msdn.microsoft.com/en-us/library/aa394516(VS.85).aspx). I googled for this quite a while and found other that have this problem too. But I also found a couple of articles which claim that this kind of query (mostly in vbscript) works with XP. But I cannot find some offical information from microsoft for this issue and I can't believe that Microsoft have overlooked this issue for three service packs. So my question is: has anybody used the Win32_VolumeChangeEvent with success on XP or can provide a link/explanation why it shouldn't work on XP?

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  • WCF - Increase ReaderQuoatas on REST service

    - by Christo Fur
    I have a WCF REST Service which accepts a JSON string One of the parameters is a large string of numbers This causes the following error - which is visible by tracing and using SVC Trace Viewer There was an error deserializing the object of type CarConfiguration. The maximum string content length quota (8192) has been exceeded while reading XML data. This quota may be increased by changing the MaxStringContentLength property on the XmlDictionaryReaderQuotas object used when creating the XML reader. Now I've read all sorts of articles advising how to rectify this All of them recommend increasing various config settings on the server and client e.g. http://stackoverflow.com/questions/65452/error-serializing-string-in-webservice-call http://bloggingabout.net/blogs/ramon/archive/2008/08/20/wcf-and-large-messages.aspx http://social.msdn.microsoft.com/Forums/en/wcf/thread/f570823a-8581-45ba-8b0b-ab0c7d7fcae1 So my config file looks like this <webHttpBinding> <binding name="webBinding" maxBufferSize="5242880" maxReceivedMessageSize="5242880" > <readerQuotas maxDepth="5242880" maxStringContentLength="5242880" maxArrayLength="5242880" maxBytesPerRead="5242880" maxNameTableCharCount="5242880"/> </binding> </webHttpBinding> ... ... ... <endpoint address="/" binding="webHttpBinding" bindingConfiguration="webBinding" My problem is that I can change this on the server, but there are no WCF config settings on the client as its a REST service and I'm just making a http request using the WebClient object any ideas?

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  • Facebook Style YUI Tabs

    - by Amaç Herdagdelen
    Does anyone know how to style YUI Tabview component [1] so it will look like Facebook tabs [2]? I am using YUI 2. A very crude attempt is below (I modified the example code given in Devtacular [3]). But it does not handle the spacing between the tabs, nor the outer lines around the selected tab. http://developer.yahoo.com/yui/tabview/ http://dl.dropbox.com/u/121472/facebook_tab.jpg http://devtacular.com/articles/bkonrad/how-to-style-an-application-like-facebook/ Thanks! .yui-navset .yui-nav a { padding: 8px; background-color: #d8dfea; color: #3b5998; font-weight: bold; font-size: 12px; float: left; margin-right: 4px; text-decoration: none; cursor: hand; } .yui-navset .yui-nav a:hover { background-color: #3b5998; color: #ffffff; text-decoration: none; } .yui-navset .yui-nav .selected a { background-color: #ffffff; color: #333333; text-decoration: none; }

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  • How can an iPhone access another non-iPhone device over wireless or bluetooth?

    - by Tai Squared
    I'm trying to figure out if an iPhone can connect to another non-iPhone device over wireless or bluetooth and have seen conflicting information. Much of what I've found was before version 3.0 of the SDK came out, when it certainly wasn't possible. Looking at questions like this mention you can't connect to an arbitrary device unless if it's part of the "Works for iPhone" device. Do I need hardware that is part of this program? Looking through the Apple documentation, it mentions connecting two iPhones, not an iPhone to another Bluetooth device. Then there are articles like this that includes this quote ...and with the newly-announced "standard support" should allow file transfer between the iPhone and a computer, as well as between nearby iPhones Other questions mention Bonjour, and the Apple documentation talk about connecting to Bonjour devices, but can an iPhone connect to any Bonjour device? Does it have to have a wifi connection, or can it use Bluetooth? Even if I could use Bluetooth to connect to another device, it won't be available on first generation iPhones and iTouches, I believe. Is that correct? I'm thinking of an iPhone application that would need to communicate with other non-iPhone devices in the area, probably using Bluetooth, but possibly a direct wireless connection. What are the possibilities and limitations of this approach? Is it not possible to have an iPhone connect to an arbitrary Bluetooth device? Does the other device have to be on a wireless Bonjour network that? I'm trying to figure out if it's even possible for this to work or if it's not worth the effort.

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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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  • .NET4: In-Process Side-by-Side Execution Explained

    - by emptyset
    Overview: I'm interested in learning more about the .NET4 "In-Process Side-by-Side Execution" of assemblies, and need additional information to help me demystify it. Motivation: The application in question is built against .NET2, and uses two third-party libraries that also work against .NET2. The application is deployed (via file copy) to client machines in a virtual environment that includes .NET2. Not my architecture, please bear with me. Goal: To see if it's possible to rebuild the application assemblies (or a subset) against .NET4, and ship the application as before, without changing the third-party libraries and including the .NET4 Client Profile (as described here) in the deployment. Steps Taken: The following articles were read, but didn't quite provide me enough information: In-Process Side-by-Side Execution: Browsed this article, and Scenario Two is the closest it comes to describing something that resembles my situation, but doesn't really cover it with any depth. ASP.NET Side-by-Side Execution Overview: This article covers a web application, but I'm dealing with a client WinForms application. CLR Team Blog: In-Process Side-by-Side: This is useful to explain how plug-ins to host processes function under .NET4, but I don't know if this applies to the third-party libraries. Further Steps: I'm also unclear on how to proceed upgrading a single .NET2 assembly to .NET4, with the overall application remaining in .NET2 (i.e. how to configure the solution/project files, if any special code needs to be included, etc.).

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  • New to MVVM - Best practices for seperating Data processing thread and UI Thread?

    - by OffApps Cory
    Good day. I have started messing around with the MVVP pattern, and I am having some problems with UI responsiveness versus data processing. I have a program that tracks packages. Shipment and package entities are persisted in SQL database, and are displayed in a WPF view. Upon initial retrieval of the records, there is a noticeable pause before displaying the new shipments view, and I have not even implemented the code that counts shipments that are overdue/active yet (which will necessitate a tracking check via web service, and a lot of time). I have built this with the Ocean framework, and all appears to be doing well, except when I first started my foray into multi-threading. It broke, and it appeared to break something in Ocean... Here is what I did: Private QueryThread As New System.Threading.Thread(AddressOf GetShipments) Public Sub New() ' Insert code required on object creation below this point. Me.New(ViewManagerService.CreateInstance, ViewModelUIService.CreateInstance) 'Perform initial query of shipments 'QueryThread.Start() GetShipments() Console.WriteLine(Me.Shipments.Count) End Sub Public Sub New(ByVal objIViewManagerService As IViewManagerService, ByVal objIViewModelUIService As IViewModelUIService) MyBase.New(objIViewModelUIService) End Sub Public Sub GetShipments() Dim InitialResults = From shipment In db.Shipment.Include("Packages") _ Select shipment Me.Shipments = New ShipmentsCollection(InitialResults, db) End Sub So I declared a new Thread, assigned it the GetShipments method and instanced it in the default constructor. Ocean freaks out at this, so there must be a better way of doing it. I have not had the chance to figure out the usage of the SQL ORM thing in Ocean so I am using Entity Framework (perhaps one of these days i will look at NHibernate or something too). Any information would be greatly appreciated. I have looked at a number of articles and they all have examples of simple uses. Some have mentioned the Dispatcher, but none really go very far into how it is used. Anyone know any good tutorials? Cory

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  • Still confused about JavaScript's 'this'.

    - by Nick Lowman
    I've been reading through quite a few articles on the 'this' keyword when using JavaScript objects and I'm still somewhat confused. I'm quite happy writing object orientated Javascript and I get around the 'this' issue by referring the full object path but I don't like the fact I still find 'this' confusing. I found a good answer here which helped me but I'm still not 100% sure. So, onto the example. The following script is linked from test.html with <script src="js/test.js"></script> if (!nick) { var nick = {}; } nick.lowman = function(){ var helloA = 'Hello A'; console.log('1.',this, this.helloA); var init = function(){ var helloB = 'Hello B'; console.log('2.',this, this.helloB); } return { init: init } }(); nick.lowman.init(); What kind of expected to see was 1. Object {} nick.lowman, 'Hello A' 2. Object {} init, 'Hello B' But what I get is this? 1. Window test.html, undefined 2. Object {} init, undefined I think I understand some of what's happening there but I would mind if someone out there explains it to me. Also, I'm not entirely sure why the first 'console.log' is being called at all? If I remove the call to the init function //nick.lowman.init() firebug still outputs 1. Window test.html, undefined. Why is that? Why does nick.lowman() get called by the window object when the html page loads? Many thanks

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  • Uploadify - Passing Information Back to The Original Form

    - by CccTrash
    I have an Send.aspx page that has an uploadify control on it. Upload.ashx handles the file upload. I am adding a file record to a sql database in the Upload.ashx file and I need to get the ID of that record back from Upload.aspx when it is done. Can't get it working with Sessions. =( Something to do with an Adobe bug? What would the best way to handle this be? Here is the uploadify control: <script type="text/javascript"> // <![CDATA[ var contestID = $('[id$=HiddenFieldContestID]').val(); var maxEntries = $('[id$=HiddenFieldMaxEntries]').val(); var userID = $('[id$=HiddenFieldUserID]').val(); $(document).ready(function() { $('#fileInput').uploadify({ 'uploader': '../uploadify/uploadify.swf', 'script': '../uploadify/Upload.ashx', 'scriptData': { 'contestID': contestID, 'maxEntries': maxEntries, 'userID': userID }, 'cancelImg': '../uploadify/cancel.png', 'auto': true, 'multi': false, 'fileDesc': 'Image Files', 'fileExt': '*.jpg;*.png;*.jpeg', 'queueSizeLimit': 1, 'sizeLimit': 4000000, 'buttonText': 'Choose Image', 'folder': '/uploads', 'onAllComplete': function(event, queueID, fileObj, response, data) { document.getElementById('<%= ButtonCleanup.ClientID %>').click(); } }); }); // ]]></script> Edit: See Answer below... Video Tutorial from start to finish: http://casonclagg.com/articles/6/video-tutorial-uploadify-asp-net-c-sharp.aspx

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  • Can I autogenerate/compile code on-the-fly, at runtime, based upon values (like key/value pairs) parsed out of a configuration file?

    - by Kumba
    This might be a doozy for some. I'm not sure if it's even 100% implementable, but I wanted to throw the idea out there to see if I'm really off of my rocker yet. I have a set of classes that mimics enums (see my other questions for specific details/examples). For 90% of my project, I can compile everything in at design time. But the remaining 10% is going to need to be editable w/o re-compiling the project in VS 2010. This remaining 10% will be based on a templated version of my Enums class, but will generate code at runtime, based upon data values sourced in from external configuration files. To keep this question small, see this SO question for an idea of what my Enums class looks like. The templated fields, per that question, will be the MaxEnums Int32, Names String() array, and Values array, plus each shared implementation of the Enums sub-class (which themselves, represent the Enums that I use elsewhere in my code). I'd ideally like to parse values from a simple text file (INI-style) of key/value pairs: [Section1] Enum1=enum_one Enum2=enum_two Enum3=enum_three So that the following code would be generated (and compiled) at runtime (comments/supporting code stripped to reduce question size): Friend Shared ReadOnly MaxEnums As Int32 = 3 Private Shared ReadOnly _Names As String() = New String() _ {"enum_one", "enum_two", "enum_three"} Friend Shared ReadOnly Enum1 As New Enums(_Names(0), 1) Friend Shared ReadOnly Enum2 As New Enums(_Names(1), 2) Friend Shared ReadOnly Enum3 As New Enums(_Names(2), 4) Friend Shared ReadOnly Values As Enums() = New Enums() _ {Enum1, Enum2, Enum3} I'm certain this would need to be generated in MSIL code, and I know from reading that the two components to look at are CodeDom and Reflection.Emit, but I was wondering if anyone had working examples (or pointers to working examples) versus really long articles. I'm a hands-on learner, so I have to have example code to play with. Thanks!

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  • Load Balance WCF and Share a Remote MSMQ for High Throughput

    - by BarDev
    After a ton of reading in books and on the web, I have noticed hints of information that WCF and MSMQ can be used in achieving high throughput. The information I have seen mentions using multiple WCF services in a farm that reads from a single MSMQ queue. The problem is that I have found paragraphs here and there that mentions that high throughput can be done, but I cannot seem to find a document of how to implement it. The following is an excerpt from a MSDN article. The following paragraph is from Best Practices for Queued Communication http://msdn.microsoft.com/en-us/library/ms731093.aspx To achieve higher throughput and availability, use a farm of WCF services that read from the queue. This requires that all of these services expose the same contract on the same endpoint. The farm approach works best for applications that have high production rates of messages because it enables a number of services to all read from the same queue. This is what I'm trying to solve. I have an intranet application where a client sends a request to a WCF service. But I want the ability to load balance the WCF services on multiple servers in a farm. I also want these WCF services in the farm to do transactional reads from a remote MSMQ when an item is available in the Queue. If this is possible, an issue I have is that I do not understand the activation process of WCF to retrieve messages from a remote queue. If this is possible, does anyone know of any articles or Webcasts that would explain it in detail? BarDev

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  • What tools/techniques can benefit a solo developer?

    - by Michael Runyon
    Hello, I am a solo developer, working in a very small web development firm. There is occasional support for development from contractors, but for the most part, if code is written in the office, I am writing it. Many of the articles and such on here talk extensively about the tools and techniques used for collaboration of developers in teams, but that is a non-issue with me, as there is no one to (technically) collaborate with. Yet, I feel that in many ways, there are things that could be adjusted for efficiency. Our small office doesn't participate in many of the meetings/team constructions that most of the techniques rely heavily upon....we mostly just walk around and talk to one another when something is needed. This works great for all of the Just-In-Time, 15 minute fix stuff that probably populates 50% of my day, but I am also constantly working on major projects that require my total concentration, and between a flurry of tiny fixes, and being the primary admin on the 4-6 servers that we own, I find it almost impossible to get real, heavy lifting done. What suggestions can you some of you offer to help me/us become more productive/efficient, without adopting all of the corporate/teamwork practices that we are trying desperately to avoid? At what cost for efficiency is our total relaxation?

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  • How to explain to users the advantages of dumb primary key?

    - by Hao
    Primary key attractiveness I have a boss(and also users) that wants primary key to be sophisticated/smart/attractive control number(sort of like Social Security number, or credit card number format) I just padded the primary key(in Views) with zeroes to appease their desire to make the control number sophisticated,smart and attractive. But they wanted it as: first 2 digits as client code, then 4 digits as year year, then last 4 digits as transaction number on that client on a given year, then reset the transaction number of client to 1 when next year flows. Each client's transaction starts with 1. e.g. WM20090001, WM20090002, BB2009001, WM20100001, BB20100001 But as I wanted to make things as simple as possible, I forgo embedding their suggested smartness in primary key, I just keep the primary key auto increments regardless of client and year. But to make it not dull-looking(they really are adamant to make the primary key as smart control number), I made the primary key appears to them smart, on view query, I put the client code and four digit year code on front of the eight-zero padded autoincrement key, i.e. WM200900000001. Sort of slug-like information on autoincremented primary key. Keeping primary key autoincrement regardless of any other information, we are able keep other potential side effects problem when they edit a record, for example, if they made a mistake of entering the transaction on WM, then they edit the client code to BB, if we use smart primary key, the primary keys of WM customer will have gaps in their control number. Or worse yet, instead of letting the control numbers have gaps/holes, the user will request that subsequent records of that gap should shift up to that gap and have their subsequent primary keys re-adjust(decremented). How do you deal with these user requests(reasonable or otherwise)? Do you yield to their request? Or just continue using dumb primary key and explain them the repercussions of having a very smart/sophisticated primary key and educate them the significant advantages of having a dumb primary key? P.S. quotable quote(http://articles.techrepublic.com.com/5100-10878_11-1044961.html): "If you hold your tongue the first time users ask what is for them a reasonable request, things will work a lot better in the end."

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  • spring security login pages?

    - by es11
    I have some confusion with how spring security works: In my application, I need to have a login page for users after which they are redirected back the page from where they came. I went through a few spring security tutorials and read some articles, and the examples work by securing a certain page on a site (managed by the <intercept url ..> tag). Then Spring security will generate a login page (or you can specify your own) in order to access the secured page. I am confused because I don't want to necessary secure a given page on my site: I want a login page for users to log into after which they have access to elevated features of the site (through spring security's authorization features). My question is: given what I described, what would be the strategy to create this login page which, after login, would grant the logged in user the appropriate authorities? The hack I thought of would be to create a simple JSP page who's only function is to redirect back to the previous page. Then I would use Spring Security to secure that JSP page. But it seems like there should be a better way of doing this... Thanks

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  • User (MS-Office) generated content - how?

    - by Avi
    How can I allow users to share Microsoft Office generated content on an ASP.Net site? For example usage, imagine a site similar to StackOverflow. George, writing a question, uses Word, Excel or OneNote to create content, and then inserts the content into the question area (probably copying it into the clipboard and then using some "paste from office" widget). Harry, who doesn't have MS-Office on his computer, can still see in his browser the content George has generate. If Harry wants to add content, he can use the built in editor, same like in Stackoverflow, and have to be satisfied with lesser functionality. Sue, who has MS-Office installed, can of course see the content in the browser just like Harry. In addition, she can "export" this content and process it in the application George used to generate it. So, how do I do it? Would Save/Export to HTML feature work? Any tools? Samples? Articles? Office 2007 or later is OK.

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  • CQRS - The query side

    - by mattcodes
    A lot of the blogsphere articles related to CQRS (command query repsonsibility) seperation seem to imply that all screens/viewmodels are flat. e.g. Name, Age, Location Of Birth etc.. and thus the suggestion that implementation wise we stick them into fast read source etc.. single table per view mySQL etc.. and pull them out with something like primitive SqlDataReader, kick that nasty nhibernate ORM etc.. However, whilst I agree that domain models dont mapped well to most screens, many of the screens that I work with are more dimensional, and Im sure this is pretty common in LOB apps. So my question is how are people handling screen where by for example it displays a summary of customer details and then a list of their orders with a [more detail] link etc.... I thought about keeping with the straight forward SQL query to the Query Database breaking off the outer join so can build a suitable ViewModel to View but it seems like overkill? Alternatively (this is starting to feel yuck) in CustomerSummaryView table have a text/big (whatever the type is in your DB) column called Orders, and the columns for the Order summary screen grid are seperated by , and rows by |. Even with XML datatype it still feeel dirty. Any thoughts on an optimal practice?

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  • Wix create non advertised shortcut for all users / per machine

    - by mcdon
    In WIX, how do you create a non advertised shortcut in the allusers profile? So far I've only been able to accomplish this with advertised shortcuts. I prefer advertised shortcuts because you can go to the shortcut's properties and use "find target". In the tutorials I've seen use a registry value for the keypath of a shortcut. The problem is they use HKCU as the root. When HKCU is used, and another user uninstalls the program (since it's installed for all users) the registry key is left behind. When I use HKMU as the root I get an ICE57 error, but the key is removed when another user uninstalls the program. I seem to be pushed towards using HKCU though HKMU seems to behave correctly (per-user vs all-users). When I try to create the non advertised shortcut I get various ICE error such as ICE38, ICE43, or ICE 57. Most articles I've seen recommend "just ignore the ice errors". There must be a way to create the non advertised shortcuts, without creating ICE errors. Please post sample code for a working example.

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  • Adapt beginner C# SQL Server INSERT example to work with my database

    - by Mike Bertelsen
    I have read TONS of tutorials, articles and whatever regarding my issue and honestly, due to my lack of experience I can't twist my fingers around this one so I hope some of you guys can help me out :) I am working on a project (simply to learn how to program so it's probably very basic), but I have this "News" page where I can update and delete data using a GridView. Now I would like to INSERT something into my database using 3 textboxes and 1 submit button. I have 3 rows that has to be inserted: Headline Date Content/the news itself. Which are stored under NyhedTB from the connectionstring: BoligStjernenConnectionString My query looks like this: INSERT INTO [NyhedTB] ([NyhedDato], [NyhedTitel], [NyhedTekst]) VALUES (@NyhedDato, @NyhedTitel, @NyhedTekst) I read on the internet that this code should do the magic for me (I will have to insert my own values ofc.): static void Insert() { try { string connectionString = "server=.;" + "initial catalog=employee;" + "user id=sa;" + "password=sa123"; using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlCommand cmd = new SqlCommand("INSERT INTO EmployeeDetails VALUES(" + "@Id, @Name, @Address)", conn)) { cmd.Parameters.AddWithValue("@Id", 1); cmd.Parameters.AddWithValue("@Name", "Amal Hashim"); cmd.Parameters.AddWithValue("@Address", "Bangalore"); int rows = cmd.ExecuteNonQuery(); //rows number of record got inserted } } } catch (SqlException ex) { //Log exception //Display Error message } } I looked at this code and thought it should be easy enough but really, I can't figure it out.

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