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  • ResolveUrl() from WCF service

    - by Michael Freidgeim
    I wanted to ResolveUrl() from WCF service and foundhttp://www.west-wind.com/weblog/posts/2007/Sep/18/ResolveUrl-without-Page .However the function assumes that the call is synchronous, in asynchronous call (e.g called from TPL task) HttpContext.Current==null.I had to split my asynchronous method into two-a long asynchronous one, invoked as task and generating relative URL and a post-task, that is calling wwWebUtils.ResolveServerUrl(relativeUrL)The http://www.codeproject.com/Articles/205425/ASP-NET-ResolveUrl-Without-Page  article suggests to useSystem.Web.VirtualPathUtility.ToAbsolute("~/default.aspx");but i expect, it wouldn’t work from asynchronous thread as well.

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  • Event-Driven Debugging

    - by Brian Donahue
    Most application troubleshooting involves getting an error, analyzing the error message, and at worst, attaching a debugger to work out the real cause. What is not really covered is how to troubleshoot an applicaiton that is not errant, but is having a performance issue, and more than likely, in the middle of the night when you are snug in your bed, sawing logs. What you need is an ever-vigilant cyborg who never sleeps to sit in front of your server all night, but as SkyNet is not live yet, you can settle for the next-best thing. Windows provides performance counters and alerts that can tell you when an applicaiton reaches an unacceptable threshold of naughty behavior, but although it can tattle on your brainchild, it won't be the child psychiatrist that you need to tell you why he's pulling your server's pigtails and pulling faces at the teacher. What you need is to plug a debugger into performance monitor and have it tell you what's going on with your applicaiton at the time. For this purpose, I'd used Microsoft's MDbgEngine as the basis for an applicaiton that will dump a program's stacks, I call it Application Slicer Dicer Wonder Dumper Super Cyborg, or StackOMatic for short. StackOMatic can look at a program's behavior and tell you if the stacks are not moving, but it can also work on the command-line to dump all managed methods on the stack at will. Now that there is a command you can use to dump the stacks, all you need to do is politely tell Windows to run it when you're displeased with your creation as it's trashing the CPU of your server at 3 AM. The first step is to create a scheduled task to tell StackOMatic to dump your applicaiton. Start Task Scheduler and right-click Task Scheduler Library and then Create Task. For this exercise I'm creating a task that will dump the Red Gate SQL Monitor Base Monitor Service. In the Actions tab, I enter the path to StackOMatic and use the arguments to log the stack dump to a file: /PN:RedGate.Response.Engine.Alerting.Base.Service /OUT:c:\users\administrator\MonitorLog.txt Next, I go into Windows Server 2008's Reliability and Performance Monitor and add a new Data Collector Set. This set will produce an alert on the %Processor Time for the service. When the processor time breaches 50%, it will run the StackDumpBaseService task I created. Whenever the service misbehaves, it will append to the log file. Now when I go to work in the morning, I can see what the service was doing when it overloaded the processor and take action.

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  • TabCtrl

    Adjustable contol with zooming and scrolling tabs, dragging with the mouse, custom drawing and much more

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  • How does the ETVDX model fit in with project management?

    - by peter_gent
    In a lecture, the lecturer described the following model : E - entry (the preconditions to a task). T - task - doing the task V - verifying the tasks quality D - Delivering the tasks X - Exit. or ETVDX If anyone is familiar with this 'generic compliance model', how does it fit into software development exactly? I presume it's equivalent to the waterfall model of negotiating requirements defining/decompose stage estimating effort estimating resources developing schedule.

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  • Backbone.js Model change events in nested collections not firing as expected

    - by Pallavi Kaushik
    I'm trying to use backbone.js in my first "real" application and I need some help debugging why certain model change events are not firing as I would expect. I have a web service at /employees/{username}/tasks which returns a JSON array of task objects, with each task object nesting a JSON array of subtask objects. For example, [{ "id":45002, "name":"Open Dining Room", "subtasks":[ {"id":1,"status":"YELLOW","name":"Clean all tables"}, {"id":2,"status":"RED","name":"Clean main floor"}, {"id":3,"status":"RED","name":"Stock condiments"}, {"id":4,"status":"YELLOW","name":"Check / replenish trays"} ] },{ "id":47003, "name":"Open Registers", "subtasks":[ {"id":1,"status":"YELLOW","name":"Turn on all terminals"}, {"id":2,"status":"YELLOW","name":"Balance out cash trays"}, {"id":3,"status":"YELLOW","name":"Check in promo codes"}, {"id":4,"status":"YELLOW","name":"Check register promo placards"} ] }] Another web service allows me to change the status of a specific subtask in a specific task, and looks like this: /tasks/45002/subtasks/1/status/red [aside - I intend to change this to a HTTP Post-based service, but the current implementation is easier for debugging] I have the following classes in my JS app: Subtask Model and Subtask Collection var Subtask = Backbone.Model.extend({}); var SubtaskCollection = Backbone.Collection.extend({ model: Subtask }); Task Model with a nested instance of a Subtask Collection var Task = Backbone.Model.extend({ initialize: function() { // each Task has a reference to a collection of Subtasks this.subtasks = new SubtaskCollection(this.get("subtasks")); // status of each Task is based on the status of its Subtasks this.update_status(); }, ... }); var TaskCollection = Backbone.Collection.extend({ model: Task }); Task View to renders the item and listen for change events to the model var TaskView = Backbone.View.extend({ tagName: "li", template: $("#TaskTemplate").template(), initialize: function() { _.bindAll(this, "on_change", "render"); this.model.bind("change", this.on_change); }, ... on_change: function(e) { alert("task model changed!"); } }); When the app launches, I instantiate a TaskCollection (using the data from the first web service listed above), bind a listener for change events to the TaskCollection, and set up a recurring setTimeout to fetch() the TaskCollection instance. ... TASKS = new TaskCollection(); TASKS.url = ".../employees/" + username + "/tasks" TASKS.fetch({ success: function() { APP.renderViews(); } }); TASKS.bind("change", function() { alert("collection changed!"); APP.renderViews(); }); // Poll every 5 seconds to keep the models up-to-date. setInterval(function() { TASKS.fetch(); }, 5000); ... Everything renders as expected the first time. But at this point, I would expect either (or both) a Collection change event or a Model change event to get fired if I change a subtask's status using my second web service, but this does not happen. Funnily, I did get change events to fire if I added one additional level of nesting, with the web service returning a single object that has the Tasks Collection embedded, for example: "employee":"pkaushik", "tasks":[{"id":45002,"subtasks":[{"id":1..... But this seems klugey... and I'm afraid I haven't architected my app right. I'll include more code if it helps, but this question is already rather verbose. Thoughts?

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  • How do I hide the UITableViewCell border for a custom cell in a group tableview?

    - by Gorgando
    What I am trying to do: I want three buttons side-by-side in a tableviewcell just like in Contacts app. What I've done: I have a custom tableviewcell with three uibuttons in it. I've set the background color of the tableviewcell to be transparent. What I can't figure out: The tableviewcell border is still there! Everything looks great except for the border floating around the 3 buttons. Am I doing this completely wrong? Or is there a simple way to remove/hide the border? Thanks!!!

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  • Example WCF XML-RPC client C# code against custom XML-RPC server implementation?

    - by mr.b
    I have built my own little custom XML-RPC server, and since I'd like to keep things simple, on both server and client side (server side PHP runs, by the way), what I would like to accomplish is to create a simplest possible client in C# using WCF. Let's say that Contract for service exposed via XML-RPC is as follows. [ServiceContract] public interface IContract { [OperationContract(Action="Ping")] string Ping(); // server returns back string "Pong" [OperationContract(Action="Echo")] string Echo(string message); // server echoes back whatever message is } So, there are two example methods, one without any arguments, and another with simple string argument, both returning strings (just for sake of example). Service is exposed via http. What's next? Thanks for reading! P.S. I have done my homework of googling around for samples and similar, but all that I could come up with are some blog-related samples that use existing (and very big) classes, which implement correct IContract (or IBlogger) interfaces, so that most of what I am interested is hidden below several layers of abstraction...

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  • What's the easiest way to sort a ContentResolver query by custom order?

    - by Pentium10
    I am faceing a problem where I need to sort my ContentResolver in a custom order. Take for example Contact Groups, you can define and manage them using Android's data database. But if you query this, you are limited to do order by on the name of the group only or id. In my scenarion I need to sort them in an order (other than alphabetic) that I've stored in my database. Take for example this example: Colleagues Excluded Family Friends But the order I want them to display is: Family Colleagues Friends Excluded So how would you accomplish this task?

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  • How to add custom fields in WordPress "Add a New Post" page?

    - by KPL
    Hello awesome people, I want to add a custom field on Add A New Post page. Like - if I am to make a plugin which will post links to Twitter after a new post is made, I would like to give ability to user to select if he wants to tweet that particular post's link to Twitter. I want to display a check box somewhere in the page which says - "Post this on Twitter" and then check for it and make a tweet. I have seen some plugins which do this. But can't remember which they were. Can someone please help me out?

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  • How do I change the frame position for a custom MKAnnotationView?

    - by andrei
    I am trying to make a custom annotation view by subclassing MKAnnotationView and overriding the drawRect method. I want the view to be drawn offset from the annotation's position, somewhat like MKPinAnnotationView does it, so that the point of the pin is at the specified coordinates, rather than the middle of the pin. So I set the frame position and size as shown below. However, it doesn't look like I can affect the position of the frame at all, only the size. The image ends up being drawn centered over the annotation position. Any tips on how to achieve what I want? MyAnnotationView.h: @interface MyAnnotationView : MKAnnotationView { } MyAnnotationView.m: - (id)initWithAnnotation:(id <MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier { if (self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier]) { self.canShowCallout = YES; self.backgroundColor = [UIColor clearColor]; // Position the frame so that the bottom of it touches the annotation position self.frame = CGRectMake(0, -16, 32, 32); } return self; } - (void)drawRect:(CGRect)rect { [[UIImage imageNamed:@"blue-dot.png"] drawInRect:rect]; }

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  • How can I make a custom layout / change header background color … with Tex, Latex, ConTeXt ?

    - by harobed
    Hi, currently I produce dynamically this document http://download.stephane-klein.info/exemple_document.png with Python Report Labs… to produce pdf documents. Now, I would like try to produce this document with Tex / Latex / ConTeXt… I've some questions : how can I make the layout ? how can I make header background color ? how can I define my custom title (with blue box) ? what is the better choice for my project : Latex or ConTeXt ? What package I need to use ? geometry ? fancyhdr ? Have you some example ? some resource ? Yesterday, I've read many many documentation… and I don't found a solution / example for my questions. Thanks for your help, Stephane

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  • How can I use a custom ValidationAttribute to ensure two properties match?

    - by Brandon Linton
    We're using xVal and the standard DataAnnotationsValidationRunner described here to collect validation errors from our domain objects and view models in ASP.NET MVC. I'd like to have a way to have that validation runner identify when two properties don't match through the use of custom DataAnnotations. Right now I'm forced into doing it outside of the runner, this way: if (!(model.FieldOne == model.FieldTwo)) errors.Add(new ErrorInfo("FieldTwo", "FieldOne must match FieldTwo", model.FieldTwo)); My question is: can this be done using property-level validation attributes, or am I forced into using class-level attributes (in which case, I'd have to modify the runner...and my follow up question would be how best to retrieve them in that case). Thanks!

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  • Workflow Foundation: How to create Receive activity with custom message in xaml designer?

    - by Petr Felzmann
    I need to have Receive activity which can receive my custom data. I found examples, but all use coded workflows like such public class ProcessRequest : Activity { public ProcessRequest() { Variable request = new Variable { Name = "request" }; Receive receiveRequest = new Receive { ServiceContractName = "IProcessRequest", OperationName = "Foo", CanCreateInstance = true, Content = ReceiveContent.Create(new OutArgument(request)) }; } } The main point is that Receive.Content property. It is not clear for me how I can do it in XAML designer. What I have to set in the dialog of the Content property - Message or Parameters and what to set inside those options? Thanks for the light!

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  • How to create a custom "render :my_format => argument" in rails 2.3(.5)?

    - by Rafael
    Hey! I would like to create a custom render as specified in title. For instance, I have my controller: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } end end end , but I would like something like this: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } format.my_format { render :my_format => @objs } end end end Is it possible? What are the steps I need to make it work? Thanks in advance!

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  • How to override a render to create a custom "render :my_format => argument" in rails 2.3(.5)?

    - by Rafael
    Hey! I would like to create a custom render as specified in title. For instance, I have my controller: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } end end end , but I would like something like this: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } format.my_format { render :my_format => @objs } end end end Is it possible? What are the steps I need to make it work? Thanks in advance! UPDATE I want something like in here. So I replaced the @objs with a method but it didn't work either (the method wasn't called). Obs: I register the mime type at config/initializers/mime_types.rb.

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  • How do I setup a custom Gem.path using JRuby::Rack?

    - by Ben Hogan
    Hi Nick et al, I've been having some fun looking at to source code of JRuby-Rack and Rubygems to try to figure out how to solve a org.jruby.rack.RackInitializationException: no such file to load -- compass in my rackup script cased by require 'compass'. I'm passing in a custom 'gem.path' as a servlet init parameter and it is being correctly picked up by jruby-rack as far as I can tell by debugging in my rackup script: ENV['GEM_PATH'] => '/foo/lib/.jruby/gems' (expected) but rubygems seems to be broken: Gem.path => file:/foo/lib/jruby-complete-1.4.0.jar!/META-INF/jruby.home/lib/ruby/gems/1.8 I'm not sure why rubygems has not adjusted it's gem_path nor the LOAD_PATH, thus breaking require? Thanks again, I'm still a newbie at ruby, jruby, rack and sinatra. Any pointers in the right direction appreciated! Ben

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  • Why can't I set a custom color-tint for the UINavigationBar?

    - by mobibob
    I want to change the color on the navigation bar and the documentation states not to attempt to change the 'alpha' value. So, how can I set a color that is not the SDK defined values (e.g., [UIColor redColor], brownColor, etc.) if all the constructors provide an alpha value? I tried getting the current alpha value but that did not help. When I use a custom color, it causes the navigation bar to look like an x-ray (a scraggy, black-on-white). [self.navigationController.navigationBar setTintColor: [UIColor brownColor]];

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  • In Android (on JB), how can I add an action to a custom rich notification?

    - by user496854
    I've been playing with the new rich notificaitons in Jelly Bean, and everything works as expected when I set up a new notificaiton using the templates Notification.BigPictureStyle, Notification.BigTextStyle, or Notification.InboxStyle. I can use the Notification.Builder.addAction() method, and the action buttons show up at the bottom of the extended notification. But when I try to create a cutsom notification using Notification.bigContentView, the action buttons never show up. Just to clarify, if I never set bigContentView, the buttons do show up. But as soon as that field is set to a custom RemoteViews object, the buttons are gone. Does anyone have any ideas on why this is happening?

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  • How is Magento when it comes to adding custom functionality?

    - by ohsnapy
    hi, How is working with Magento when it comes to adding custom functionality? From an outsiders view the framework looks very complicated and it's hard to gage what is and is not possible. What are your experiences? Is it a difficult framework to get it to do what you want? Are there things that simply cannot be customized in Magento? How difficult is it to manage customizations when upgrading to latest versions,etc.. Any feedback/personal experiences would be great. Examples of highly customized Magento sites would be great too. Thanks for your help.

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  • How to make a UserControl with a custom DefaultBackColor?

    - by Blorgbeard
    When I right-click on my custom UserControl's BackColor property in the property-grid, then click Reset, I would like the BackColor property to change to (for example) Color.LightGreen, and the property value to appear un-bolded, to indicate that it is the default value. Currently, I know I can do this: public override void ResetBackColor() { BackColor = Color.LightGreen; } Which works as far as setting it to LightGreen on reset. But it still appears bolded in the property-grid, indicating that the current value is not the default. I notice that the Control class has a static read-only property, DefaultBackColor. Unfortunately, since it's static, I cannot override it. Is there some way to get all the functionality I want?

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  • When and how should custom hierarchies be used in clojure?

    - by Rob Lachlan
    Clojure's system for creating an ad hoc hierarchy of keywords is familiar to most people who have spent a bit of time with the language. For example, most demos and presentations of the language include examples such as (derive ::child ::parent) and they go on to show how this can be used for multi-method dispatch. In all of the slides and presentations that I've seen, they use the global hierarchy. But it is possible to keyword relationships in custom hierarchies. Some questions, therefore: Are there any guidelines on when this is useful or necessary? Are there any functions for manipulating hierarchies? Merging is particularly useful, so I do this: (defn merge-h [& hierarchies] (apply merge-with (cons #(merge-with clojure.set/union %1 %2) hierarchies)) But I was wondering if such functions already exist somewhere.

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  • Hibernate: can I override an identifier generator using XML with a custom generator?

    - by Ken Liu
    I want to use a custom sequence generator in my application, but the entity is located in a domain model jar that is shared with other applications. Apparently entity annotations can be overridden in orm.xml but I can't figure out the proper XML incantation to get this to work. I can modify the annotation in the entity like this this: @GenericGenerator(name = "MYGEN", strategy = "MyCustomGenerator") @GeneratedValue(generator = "MYGEN") But I need to somehow map this to orm.xml in order to override the original annotation. Looking at the orm.xml schema here it appears that I can't even specify a generation type besides "sequence" and "table".

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