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  • Have you been stuck with the math in a Flash project?

    - by VideoDnd
    Have you been stuck with the math in a Flash project? It's a loose design pattern my director formulated. My goal is to keep the project object oriented, and get 'non Flash obstacles' off my plate. XML values going to AS3, updating a changing acceleration formula. I don't hate math, but it just doesn't seem OOP or good project planning to have the math stuck in Flash. Your comments are welcome.

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  • Installing SilverStripe on 000webhost.com (Free web host)?

    - by benwad
    Hi I'm trying to learn how to work Silverstripe so I extracted the tar file to my free hosting account. I then went on install.php and edited the permissions to meet the requirements set out in install.php but I still get two warnings from the 'webserver configuration' section: I can't tell what webserver you are running. Without Apache I can't tell if mod_rewrite is enabled. I can't tell whether mod_rewrite is running. You may need to configure a rewriting rule yourself. I looked in phpinfo() and mod_rewrite appears to be installed. I contacted the web host and they said it was to do with virtual directory paths, and I should add 'RewriteBase /' to the top of my .htaccess file in the public_html directory. However I did this and still had the same problem. The install.php script says that I can install it even with these warnings but when I press 'install' it brings me to a page with the following errors: Friendly URLs are not working. This is most likely because mod_rewrite isn't configuredcorrectly on your site. Please check the following things in your Apache configuration; you may need to get your web host or server administrator to do this for you: * mod_rewrite is enabled * AllowOverride All is set for your directory I also get this error message from the server: Warning: unlink(mysite/_config.php) [function.unlink]: Permission denied in /home/a2716553/public_html/install.php on line 701 000webhost.com says they have successfully installed Silverstripe on their user accounts without much configuration but I can't seem to find out how.

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  • UnitOfWork & StrcutureMap & Desktop Application

    - by Afshin Gh
    When developing Web App and using StrcutureMap i normally use HybridHttpOrThreadLocalScoped for my UnitOfWork Part. (unit of work starts up per web request and ...) What about a desktop app(windows service, console, ...)? There is no session and request in a desktop app. How should i manage UoW in this situation? any good reference or article? I don't want to make it singleton. What should I do?

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  • Can one Python project use both 2.x and 3.x code?

    - by Begbie00
    Hi all - I'm going to start on a long (~1-year) programming project in Python. I want to use wxPython for my GUI (supports 2.6), but I also want to use 3.1 for the rest of the project (to start using the 3.x syntax). Is there any way for me to design a project that mixes 2.x and 3.x modules? Or should I just bite the bullet and use either 2.x (preferred, since I really want to learn wxPython) or 3.x throughout? Thanks, Mike

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  • IIS 6 + ASP.NET web service - DW20 and stackoverflow exception

    - by pcampbell
    Consider an ASP.NET SOAP web service that starts up fine, but craters hard when receiving its first hit. Please note that this is deployment works in the Test environment, but not in the PreProd environment. Both are Windows 2003 SP3 + IIS 6 + ASP.NET 3.5. All up-to-date. The behaviour that we're seeing is: restart the site & app pool the app pool is configured to run under Network Service. browsing to the .asmx and .wsdl responds normally, as expected. send a normal well-formed SOAP request / normal payload to the web service 100% CPU usage after 5 seconds, the page request / site returns "Service Unavailable" no entry is created in the IIS log file (i.e. c:\windows\system32\logfiles\W3C-foo) the app pool ends up being stopped The processes that hit the CPU hard are dw20.exe. I am unsure why Dr Watson is involved here. Event Log shows an ASP.NET Runtime error: Task Manager: Event log text: EventType clr20r3, P1 w3wp.exe, P2 6.0.3790.3959, P3 45d6968e, P4 errormanagement, P5 1.0.0.0, P6 4b86a13f, P7 24, P8 0, P9 system.stackoverflowexception, P10 NIL. Questions Any thoughts on what this system.stackoverflow exception might be? Given that the code is the same between environments, might it be a payload problem? Could it be a configuration issue? You can see the name of my .NET assembly there in the exception message: "ErrorManagement"

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  • Database schema for multiple category/product relationship

    - by sree01
    I want to design a database for an e-commerce application with category/subcategory management. Please suggest a database schema where we can create categories and subcategories and add products to those categories. Each product can have multiple categories and we can select products belong to multiple categories using a boolean database query Thanks

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  • Why did Matz choose to make Strings mutable by default in Ruby?

    - by Seth Tisue
    It's the reverse of this question: http://stackoverflow.com/questions/93091/why-cant-strings-be-mutable-in-java-and-net Was this choice made in Ruby only because operations (appends and such) are efficient on mutable strings, or was there some other reason? (If it's only efficiency, that would seem peculiar, since the design of Ruby seems otherwise to not put a high premium on faciliating efficient implementation.)

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  • One Comcast Business Gateway, One Router, Two Web Servers

    - by Kevin Scheidt
    I have a Comcast business account with a router and a web server (info) attached. behind the router there are multiple computers and a second web server (info) which also serves as a file server. (info) has two nics in it. One direct to comcast and one connected to the router. It needs to serve the world it's websites. It needs however, to also be able to see all the internal computers and (com)'s served files. With just 1 nic (the one connected to the router, not comcast), (info) works fine but no one outside can see it. (com) services port 80 and (info) needs to handle port 80 as well. I have two domain names registered, and 5 static ip's from comcast. right now h t t p: / /www.graceamazing.com handled by (com) works fine and h t t p: / /www.graceamazing.com:1307 handled by (info) works fine. but as soon as I enable the 2nd nic in (info) h t t p: / /www.graceamazing.info runs extremely slow (Horribly slow). however, h t t p: / /www.graceamazing.com:1307 and .com work fine. (com) has an ip address via the router 70.89.233.41 (info) has a ip addy of 70.89.233.46 via comcast (2nd nic) and a internal ip of 192.168.x.100 via static behind the router. Any suggestions or changes to make that will make h t t p: / /www.graceamazing.info perform with the same speed it has when going through h t t p: / /graceamazing.com:1307 is there a setting I should check / could have misssed?

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  • How to change easily between ajax-based website and basic HTML website?

    - by A.S al-shammari
    Hi, I have a website ( based on JSP/Servlets ,using MVC pattern), and I want to support AJAX-based website and basic HTML-based website. website visitors should be able to change the surfing mode from Ajax to basic HTML and vise versa, - as it applies in Google-mail. The Questions : What is the best way to achieve this goal easily? Should I design two views for each page? I use JQuery and JSON as the result of this answer.

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  • IIS6: How to troubleshoot a 404 error in an ASP.NET application?

    - by Tomalak
    I have an ASP.NET application on a Windows Server 2003/IIS6 that refuses to run for some reason (it's the Xerox Centre, if that info helps). It has been working flawlessly before though on this server. Now, all I get if I try to open the app homepage (http://some.intranet.server/XeroxCentreWareWeb/) is a "404 - File or directory not found" error. The app is configured to run in it's own app pool, which runs as Network Service. The Network Service account has read access to the configured directory. If I stop the app pool, I get the expected "Service Unavailable" message, meaning the app and its pool are wired correctly I tried to track down any file permission issues with procmon - nothing to be seen. There isn't even an access to the web app directory happening when the page loads. Interestingly, according to procmon, the web server accesses the 401-2 custom error file (Logon failed due to server configuration) first, but then decides to send the 404 down to the client. EDIT: The app runs with Windows-integrated authentication. Regular users have access to the app directory as well (I would have noticed file system "ACCESS DENIED" messages in procmon, if there had been any.) This makes me think that there is some kind of weird permission problem that occurs even before the application files are being accessed. I just have no idea where to look. I've tried to run the app pool as Local System for a test, but to no avail. What else could I check in this case?

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  • JFace Providers and MVC/MVP/etc.

    - by Alexey Romanov
    Where do the JFace providers belong in an MVP or MVC architecture? Or should Provider pattern be treated as a different way of View-Model separation? If so, is it the same as the ASP.NET Provider pattern? Is there an article on a proper design of JFace applications using Providers?

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  • Error setting up Blackberry Internet Service with Outlook Web Access

    - by Travis
    I'm trying to set up Blackberry Internet Service to connect to our Windows SBS2003 outlook web access. I've tried every possible combination of credentials by I always get the same error: An error occured during email account validation. Please check your information and try again. If the error persists please contact your System Administrator. The fields are the following: Outlook Web Access URL: http://mail.domain.com/exchange (I've also tried just using the IP address http://000.000.000.000/exchange with no effect). User Name: JohnDoe (same as OWA login / domain username - I've also tried DOMAIN\JohnDoe) Email Address: [email protected] Mailbox Name: This one confused me a little bit, but it seems it should be the same as the domain username (eg. JohnDoe). I've also tried DOMAIN\JohnDoe, and a number of other things. No matter what I do, I get the same error message. At this point, I'm basically just trying things, because I don't really know how this service is supposed to work. Does anyone know what causes this particularly vague error message, and what I can change either in my email settings or on our exchange server to resolve this?

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  • Java web app deployment and ControlTier adoption

    - by Ran
    I've been searching for a configuration and deployment manager tool for my java-linux based web service and have been looking mainly at ControlTier (http://controltier.org). We operate at a medium scale (100's of hosts, multi-DC, dozens of services). There seem to be be plenty of lower level system admin tools such as chef, puppet, cfengine, bcfg2 and more and my understanding and the reason I'm calling them "low level" is that they are great for system level administration tasks such as setting up a mount, file permissions, users etc but aren't designed, for example for java deployments, which usually come with a build process and special java semantics. In many cases any tool can be used to do anything but if it was not designed for the task it can get uncomfortable. OTOH control-tier seem to have been designed just for that - java application deployments, at least that's what all the tutorials on their site demonstrate but here's the problem - The wiki at http://controltier.org/wiki/ is pretty good and stuffed with examples and the company behind the open source CT product is very responsive (pushy...) however, I'm yet to have seen any material from 3rd party users on the net. No success stories, no detailed blog posts, no best practices, no cheat sheets, not even hate letters, nothing. This plays badly for DTO solutions, CT's sponsor for two reasons, one is that it makes me suspicious what's the reason for the poor adoption? and second, what do I do if I get stuck and there's no help page on CT's wiki page and the mailing list is too slow to answer. I'm stuck with a "free" product that a consultancy company is pushing. So my question here - I'd be interested in hearing if anyone has had real world experience with CT for java based web app deployments and if he'd thumb up the product? Any other comments that may enlighten me are welcome of course...

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  • Silverlight open source font replacement for Segoe

    - by Rus
    I'm currently building a LOB application in Silverlight 4. I've been considering the question of typography for the application. After some experimentation on the design side the font that people like is Segoe UI. Now I can embed this font and although the font is freely available in Windows we don’t have distribution rights for this font. I am looking for an open source font visually equivalent of the Segoe family that can be freely distributed. Does such a font exist?

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  • What will be best strategy for designing database for a magazine online?

    - by Kaveh
    Hello; I have design a magazine online and worry that is it the best approch or at least a good approch or no,the magazine contains articles+news in all subjects, i have one table for both articles+news ,but i would like to know that is this good or i must separate articles and news (it is clear that beside the main table there are several tables for categories ,tags,and photos and tables for relation between these tables)? Thanks

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  • Learning to write organized and modular programs

    - by Peter
    I'm a computer science student, and I'm just starting to write relatively larger programs for my coursework (between 750 - 1500 lines). Up until now, it's been possible to get by with any reasonable level of modularization and object oriented design. However, now that I'm writing more complex code for my assignments I'd like to learn to write better code. Can anyone point me in the direction of some resources for learning about what sort of things to look for when designing your program's architecture so that you can make it as modularized as possible?

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  • Observer pattern used with decorator pattern

    - by icelated
    I want to make a program that does an order entry system for beverages. ( i will probably do description, cost) I want to use the Decorator pattern and the observer pattern. I made a UML drawing and saved it as a pic for easy viewing. This site wont let me upload as a word doc so i have to upload a pic - i hope its easily viewable.... I need to know if i am doing the UML / design patterns correctly before moving on to the coding part. Beverage is my abstract component class. Espresso, houseblend, darkroast are my concrete subject classes.. I also have a condiment decorator class milk,mocha,soy,whip. would be my observer? because they would be interested in data changes to cost? Now, would the espresso,houseblend etc, be my SUBJECT and the condiments be my observer? My theory is that Cost is a changes and that the condiments need to know the changes? So, subject = esspresso,houseblend,darkroast,etc.. // they hold cost() Observer = milk,mocha,soy,whip? // they hold cost() would be the concrete components and the milk,mocha,soy,whip? would be the decorator! So, following good software engineering practices "design to an interface and not implementation" or "identify things that change from those that dont" would i need a costbehavior interface? If you look at the UML you will see where i am going with this and see if i am implementing observer + Decorator pattern correctly? I think the decorator is correct. since, the pic is not very viewable i will detail the classes here: Beverage class(register observer, remove observer, notify observer, description) these classes are the concrete beverage classes espresso, houseblend,darkroast, decaf(cost,getdescription,setcost,costchanged) interface observer class(update) // cost? interface costbehavior class(cost) // since this changes? condiment decorator class( getdescription) concrete classes that are linked to the 2 interface s and decorator are: milk,mocha,soy,whip(cost,getdescription,update) these are my decorator/ wrapper classes. Thank you.. Is there a way to make this picture bigger?

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  • Installing WindowsAuthentication breaks authentication / web.config?

    - by Ian Quigley
    I have a clean Windows 2008 R2 box (on a VM) and have installed IIS 7.5 with default options. I then copied a website to it (from Windows 7, IIS 7) and after a little tweaking the website is working fine. The website is currently using and working with Anonymous Authentication. I have gone back to the Windows Components/Sever Manager, Roles - Security and ticked and installed Windows Authentication. When I check my server in IIS (top level above sites) - Authentication, I see Anonymous Authentication (enabled) ASP.NET Impersonation (disabled) Forms Authentication (disbaled) Windows Authentication (enabled) When I check my default website - Authentication, I see as above but "Retrieving status" and an error dialog saying There was an error while performing this operation. Details: Filename c:\inetpub\wwwroot\screwturnwiki\web.config Line number: 96 Error: This configuration section cannot be used in this path. This happens when the section is being locked at the parent level. Locking is either by default (overriderModeDefault="Deny"), or set explicity by a location tag with overrideMode="Deny" or the legacy allowOverride="False". I have tried hand editing the web.config with no success. UN-installing Windows Authentication happily returns my site to working with Anonymous Authentication, and allows me to enable/disable these three options. FYI. I am using ScrewTurnWiki with the Active Directory plug in.

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  • Why can't my master page be loaded

    - by Irwin
    I've largely ignored this error, but i can do so no more. I'm trying to view a page that inherits from a master page in my solution, but I see this: "The Master Page file 'Site.master' cannot be loaded." The page exists, I can browse to it, view it in design view and do stuff. When the site is loaded in the browser, it works fine. Any ideas?

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  • In a DDD approach, is this example modelled correctly?

    - by Tag
    Just created an acc on SO to ask this :) Assuming this simplified example: building a web application to manage projects... The application has the following requirements/rules. 1) Users should be able to create projects inserting the project name. 2) Project names cannot be empty. 3) Two projects can't have the same name. I'm using a 4-layered architecture (User Interface, Application, Domain, Infrastructure). On my Application Layer i have the following ProjectService.cs class: public class ProjectService { private IProjectRepository ProjectRepo { get; set; } public ProjectService(IProjectRepository projectRepo) { ProjectRepo = projectRepo; } public void CreateNewProject(string name) { IList<Project> projects = ProjectRepo.GetProjectsByName(name); if (projects.Count > 0) throw new Exception("Project name already exists."); Project project = new Project(name); ProjectRepo.InsertProject(project); } } On my Domain Layer, i have the Project.cs class and the IProjectRepository.cs interface: public class Project { public int ProjectID { get; private set; } public string Name { get; private set; } public Project(string name) { ValidateName(name); Name = name; } private void ValidateName(string name) { if (name == null || name.Equals(string.Empty)) { throw new Exception("Project name cannot be empty or null."); } } } public interface IProjectRepository { void InsertProject(Project project); IList<Project> GetProjectsByName(string projectName); } On my Infrastructure layer, i have the implementation of IProjectRepository which does the actual querying (the code is irrelevant). I don't like two things about this design: 1) I've read that the repository interfaces should be a part of the domain but the implementations should not. That makes no sense to me since i think the domain shouldn't call the repository methods (persistence ignorance), that should be a responsability of the services in the application layer. (Something tells me i'm terribly wrong.) 2) The process of creating a new project involves two validations (not null and not duplicate). In my design above, those two validations are scattered in two different places making it harder (imho) to see whats going on. So, my question is, from a DDD perspective, is this modelled correctly or would you do it in a different way?

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  • What is the point of CSS collapsing margins?

    - by Tom
    The CSS2 box model tells us that adjoining margins collapse. I find it quite annoying, being the source of many design bugs. I hope that by understanding the purpose of collapsing margins, I will understand when to use them and how to avoid them when they are not needed. What is the purpose of this feature?

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