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  • [Rails] OAuth with Digg API

    - by Karl
    I'm attempting to get Rails to play nice with the Digg API's OAuth. I'm using the oauth gem (ruby one, not the rails one). My code looks approximately like this: @consumer = OAuth::Consumer.new(API_KEY, API_SECRET, :scheme => :header, :http_method => :post, :oauth_callback => "http://locahost:3000", :request_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getRequestToken', :access_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getAccessToken', :authorize_url => 'http://digg.com/oauth/authorize') @request_token = @consumer.get_request_token session[:request_token] = @request_token.token session[:request_token_secret] = @request_token.secret redirect_to @request_token.authorize_url Which is by-the-book in terms of what the gem documentation gave me. However, Digg spits a "400 Bad Request" error back at me when @consumer.get_request_token is called. I can't figure out what I'm doing wrong. Any ideas?

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  • Using generics with XmlSerializer

    - by MainMa
    Hi, When using XML serialization in C#, I use code like this: public MyObject LoadData() { XmlSerializer xmlSerializer = new XmlSerializer(typeof(MyObject)); using (TextReader reader = new StreamReader(settingsFileName)) { return (MyObject)xmlSerializer.Deserialize(reader); } } (and similar code for deserialization). It requires casting and is not really nice. Is there a way, directly in .NET Framework, to use generics with serialization? That is to say to write something like: public MyObject LoadData() { // Generics here. XmlSerializer<MyObject> xmlSerializer = new XmlSerializer(); using (TextReader reader = new StreamReader(settingsFileName)) { // No casts nevermore. return xmlSerializer.Deserialize(reader); } }

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  • Cross-platform (microcontroller-PC) algorithm development

    - by Kyr
    Hello people! I was asked to develop a algorithm for network application on C. This project will be developed on Linux for PC and then it will be transferred to a more portable platform, something that will include a microcontroller. There are many microcontroller/companies out there that provide very nice and large libraries for TCP/IP. This software will hold statistics on the network performance. The whole idea of a cross platform (uC - PC) seems rubbish to me cause eventually the code should be written in a more platform specific way for the microcontroller, but I am not expert to judge anyway. Is there any clever way of doing this or is there a anyone that did this before? My brainstorming has "Wrapper library" and "Matlab"... Any ideas? Thx!

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  • Removing an Entity from an EntitySet during Iteration...

    - by Gregorius
    I've got this code... seems nice and elegant, but apparently the framework don't like it when i mess with a collection while iterating through it: foreach (KitGroup kg in ProductToTransfer.KitGroups) { // Remove kit groups that have been excluded by the user if (inKitGroupExclusions != null && inKitGroupExclusions.Contains(kg.KitGroupID)) ProductToTransfer.KitGroups.Remove(kg); else { // Loop through the kit items and do other stuff //... } } The error it throws when it iterates to the 2nd object in the collection is: "EntitySet was modified during enumeration" I know i could create a new collection of KitGroup objects (or even just IDs) that i want to remove, and then another loop afterwards to loop through these, and remove them from the collection, but this just seems like unnecessary extra code... can anybody suggest a more elegant way of achieving the same thing? Cheers Greg

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  • [C#] How to convert string encoded in windows-1250 to unicode ?

    - by Deveti Putnik
    Hi! I am receiving from some dll (which is wrapper for some external data source) strings in Windows-1250 codepage and I would like to insert them correctly (as unicode) to table in SQL Server Database. Since particular row in database which should hold that data is of NVarchar type, I only needed to convert it in my C# code to unicode and pass it as parameter. Everything is well and nice, but I stumbled on conversion step. I tried the following but that doesn't work: private static String getUnicodeValue(string string2Encode) // { Encoding srcEncoding = Encoding.GetEncoding("Windows-1250"); UnicodeEncoding dstEncoding = new UnicodeEncoding(); byte[] srcBytes = srcEncoding.GetBytes(string2Encode); byte[] dstBytes = dstEncoding.GetBytes(string2Encode); return dstEncoding.GetString(dstBytes); } When I insert this returned string to table, I don't get correct letters like Ð, d, C, c, C or c. Please, help! :)

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  • Installing Daemons

    - by Shahmir Javaid
    Dear Stackoverflowers, A simple link would be nice for me to understand how to install my C++ program as a deamon in UNIX, now i know some will say this should be on SERVERFAULT but as far as i understand it i need the init.d shell script to actually create the start and stop for the daemons. But if you guys can show me a simple shell script for the daemon and the file directories every thing required is associated with, that would be great. I was going to do this http://www.linux.com/archive/feed/46892 but if you read the comments every one is moaning x( . P.S. ive already done the required code for C++ to run as a daemon i just need to know how to actually install it as a daemon. At the moment im using crontab which is just not a good idea for the future of my problem. Thanks in advance

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  • Resources to learn sh scripting 'just like a normal programming language'

    - by Homer J. Simpson
    Hi, what is the best resource (book would be nice) to learn sh scripting (the "standard" shell on Unix systems) just like when i would learn a "normal" programming/scripting language ? There are lots of tutorials on certain aspects of shell scripting, they mostly deal with shells in general and unix commands and so on, but i would rather like to find a more general approach - meaning a quick syntactic overview and an outlook on how to do things you normally do when programming, like implementing small algorithms and so on. Doing actual scripting, not just a structured batch file. And rather 100-liners than 1-to-3-liners. Can you recommend a good standard book on the topic ?

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  • python: subclass a metaclass

    - by Michael Konietzny
    Hello, for putting methods of various classes into a global registry I'm using a decorator with a metaclass. The decorator tags, the metaclass puts the function in the registry: class ExposedMethod (object): def __init__(self, decoratedFunction): self._decoratedFunction = decoratedFunction def __call__(__self,*__args,**__kw): return __self._decoratedFunction(*__args,**__kw) class ExposedMethodDecoratorMetaclass(type): def __new__(mcs, name, bases, dct): for obj_name, obj in dct.iteritems(): if isinstance(obj, ExposedMethod): WorkerFunctionRegistry.addWorkerToWorkerFunction(obj_name, name) return type.__new__(mcs, name, bases, dct) class MyClass (object): __metaclass__ = DiscoveryExposedMethodDecoratorMetaclass @ExposeDiscoveryMethod def myCoolExposedMethod (self): pass I've now came to the point where two function registries are needed. The first thought was to subclass the metaclass and put the other registry in. For that the new method has simply to be rewritten. Since rewriting means redundant code this is not what I really want. So, it would be nice if anyone could name a way how to put an attribute inside of the metaclass which is able to be read when new is executed. With that the right registry could be put in without having to rewrite new. Thanks and Greetings, Michael

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  • Objective-C Pointer to class that implements a protocol

    - by Winder
    I have three classes which implement the same protocol, and have the same parent class which doesn't implement the protocol. Normally I would have the protocol as pure virtual functions in the parent class but I couldn't find an Objective-C way to do that. How can I utilize polymorphism on these subclasses and call the functions implemented in the protocol without warnings? Some pseudocode if that didn't make sense: @interface superclass: NSObject {} @interface child1: superclass<MyProtocol> {} @interface child2: superclass<MyProtocol> {} The consumer of these classes: @class child1 @class child2 @class superclass @interface SomeViewController: UIViewController { child1 *oneView; child2 *otherView; superclass *currentView; } -(void) someMethod { [currentView protocolFunction]; } The only nice way I've found to do pure virtual functions in Objective-C is a hack by putting [self doesNotRecognizeSelector:_cmd]; in the parent class, but it isn't ideal.

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  • How does Windows LIve ID work?

    - by Morgan Cheng
    I happens to find this nice article explaining how OpenID works. Clearly, OpenID consumer and OpenID server transfer information through URL query string. I'm wondering how Live ID accomplish similar functionality. It seems the info is not exchanged through query string in URL. And, since Live ID login server have different domain name from consumer domain, it is not applicable to transfer info through cookie. I tried to google tutorial of Live ID, but the result is full of jargon and hard to understand. Is there any easy-to-understand tutorial about How Live ID works?

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  • Is there a suggested solution structure for ASP.NET MVC Production Apps

    - by Eoin Campbell
    In general, I don't like to keep code (BaseClasses or DataAccess Code) in the App_Code directory of an ASP.NET Site. I'll usually pull this stuff out into a MySite.BusinessLogic & MySite.DataAccess DLL's respectively. I'm wondering should I be doing the same for ASP.NET MVC. Would it be better to Organise the solution something along the lines of MySite.Common - DLL - (Basic Functionality built on .NET System Dlls) MySite.DAL - DLL - (DataAccessLayer & DBML Files) MySite.Models - DLL - (MVC Models e.g. Repository Classes) MySite.Controllers - DLL (MVC Controllers which use Models) MySite - ASP.NET MVC Site. Or am I missing something... presumably, I'll lose some of the nice (Add View, Go To Controller, context menu items that have been added)

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  • How to pause a setTimeout call ?

    - by Pablo
    Im using jQuery and working on a notification system for my site. The notifications automatically fadeout using the setTimeout function. How can i stop the timer of the setTimeout call? For example i would like to pause the setTimeout call while the mouse is over the notification and continue the count down mouseout... I googled "pause setTimeout" with no luck. Im currently clearing the setTimeout call with clearTimeout and at same time fading out the notification on mouseout but it would be nice to have that pause effect. Any ideas?

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  • What is C's analogy to LabVIEW's Event Structure?

    - by SiegeX
    One programming construct I use quite a bit in LabVIEW is the Event Structure. This gives me the benefit of not having to needlessly waste CPU cycles via polling but only perform actions when an event I'm interested in is generated. As an experienced LabVIEW programmer with a decent understanding of C, I'm curious how one would go about emulating LabVIEW's event structure in C; preferably under Linux. A small code sample (like the one in the link above) illustrating how this might be done would be much appreciated. Also, if there already exists 3rd party libraries (for Linux) to add this event framework to C, that would be nice to know as well. Thanks.

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  • Cross Browser Addons

    - by Paul Tarjan
    I'm looking to make a browser add-on as widely and easily distributable as possible. Is there a set of wrapper addons for all the major browsers that will let me write one piece of code and it can execute in any of the environments? I don't need anything fancy, just DOM and some ajax stuff. Something along the lines of greasemonkey for IE, FF, and Chrome would be nice. In the same vein, is there a way to link to my script so that it prompts for an install of greasemonkey (if it isn't installed) and then leads the script?

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  • Upload file via HTTP from VBA (WinHTTP)

    - by chiccodoro
    Hi all, I'm trying to HTTP upload a binary file programmatically from within VBA. I intend to put an ASPX page on the server. I know there are lots of nice ways to do that (e.g. use web service instead of aspx), but my constraint is that it must run in VBA (in an excel file), and that I cannot install any additional components on the client. So I guess I'll use WinHTTP, and I've found several examples to post form data, but not to post a binary file. I probably need to base64 the file contents? If so, please let me know. If I can make WinHTTP do file encoding for me, please let me know. If there is a much better way to reach my goal (Upload file from within VBA, server needn't necessarily be ASPX, could be a ASP.NET-Web service as well), please let me know... Thx, chiccodoro

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  • Printing a PDF in .NET

    - by Chris Marasti-Georg
    It's the "printing question guy" again. Looking for a third-party solution to print PDFs, preferable from a service. I have seen some arguments against it, but due to our use case, this really is the preferred solution - the service will be receiving messages from a messaging bus, and there shouldn't be any sort of delay between the receipt of that message and the printing of the report. So far, I've found 1 solution from PDF Tools that seems very nice, and very flexible. The problem is that it's licensed per server. If anyone knows of any third-party solutions that have a seat license (per developer, unlimited runtime distribution), that would be much preferred. EDIT: Clarification, by printing, I mean sending the PDF to a printer.

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  • How do I free SQLServerCE's COM instance from the current running process?

    - by David Thornley
    It's been a while since I touched COM so be nice ;) This is under WindowsCE 5.0 with SQLServerCE 2.0. After calling this to load SQLServerCE 2.0 : - IDBInitialize *pIDBInitialize = NULL; CoCreateInstance(CLSID_SQLSERVERCE_2_0, NULL, CLSCTX_INPROC_SERVER, IID_IDBInitialize, (void**)&pIDBInitialize); Module load occurs for SSCE20.dll which obviously loads the SQLServerCE engine into the process space. What I don't understand is if I do this immediately after :- pIDBInitialize->Release(); I don't see a dll module unload, so that SSCE20.dll (and friends) are still loaded into my process. Now I tried CoFreeUnusedLibraries() which I figure forces COM to purge any unused libraries, but it doesn't seem to do the trick. At runtime I want to be able to completely unload the SQLServerCE 2.0 dll from the process to streamline an upgrade to 3.5SP1. I suspect this has something to do with the shared dll model that Microsoft use under WindowsCE... but, I might be wrong :) Thanks in advance, David.

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  • Best online course for C#/SQL for a professional engineer

    - by Rich
    I know similar questions have been asked, but I've not been able to find information specific to my situation. I'm looking for "continuing education"-type options, specifically a C# and/or SQL course. I'm a software engineering professional with a graduate level computer science degree. So I'm looking for something substantial that will be challenging. I certainly already have me feet wet in both C# and SQL I'm just looking for a more formal training to round out the edges. There is a good chance my company will pay for it if it is reasonably priced so it doesn't have to be free and preferably shouldn't be (a certificate or certification to come out of it would be nice). When I tried Google, all I found were things that sounded like crash courses (like a 3 day course or course for "dummies"), or course that did not seem very credible. Can anyone recommend a course of action for this? Thanks!

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  • Algorithm to detect no movable pieces in Stratego.

    - by maleki
    I am creating a Stratego Game and am having trouble creating an algorithm that can detect when there are no more possible moves because all your pieces are gone or the remaining pieces are unmovable or trapped by forbidden squares, unmovable pieces, or other trapped pieces. For simplicity you can think of the board as an array of Squares which can contain pieces. Square[][] gameBoard = new Square[10][10] Squares have easily checkable state such as hasPiece(), hasEnemyPiece(), hasUnMovablePiece(), hasMoveablePiece(), isBlocked(). It would also probably be nice if this algorithm wasn't run every time a player moved but maybe checked in the beginning and then only certain conditions were checked when the player moved.

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  • RadioButtonList confirm SelectedIndexChange

    - by Brian David Berman
    I have a RadioButtonList control and I would like to do a Javascript "confirm" when a user tries to change the index. Currently AutoPostBack is set to TRUE. I can, of course, just call __doPostBack from within a javascript function, etc. I tried a few things with jQuery but you have to worry about mousedown vs. click and then there is always the fact that you can click the checkbox label to select it, etc. Anyone have a nice solution for this? To be clear, I am looking for a way to prompt the user with a confirm box prior to their selection being made and triggering a postback.

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  • Flash in firefox does not start unitl they show in page

    - by Leonardo
    I have this little problem. My client wanted two distinct swf on a web page: a viewer on top and a slideshow of images at bottom. Clicking a link on the slideshow make the viewer load a movie, by means of LocalConnection api. The slideshow has a default, so when the page is loaded a default movie start. This works nice on all browser. The only problem I have is on firefox. When screen resolution is too low, or the monitor is too small (netbook) the slideshow remain hidden until scrolling. Therefore at page loading it doesn't start and the main viewer don't get instructed on playing the default video. As soon as I scroll the page, and the slideshow swf display on page, it starts and everything works fine. Do you know if there are any solution to this ? I cannot change the design, I must have two distinct swf, they come from a library he has, and I am trying to reuse components. thanks Leonardo

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  • Extrapolation using fft in octave

    - by CFP
    Using GNU octave, I'm computing a fft over a piece of signal, then eliminating some frequencies, and finally reconstructing the signal. This give me a nice approximation of the signal ; but it doesn't give me a way to extrapolate the data. Suppose basically that I have plotted three periods and a half of f: x -> sin(x) + 0.5*sin(3*x) + 1.2*sin(5*x) and then added a piece of low amplitude, zero-centered random noise. With fft/ifft, I can easily remove most of the noise ; but then how do I extrapolate 3 more periods of my signal data? (other of course that duplicating the signal). The math way is easy : you have a decomposition of your function as an infinite sum of sines/cosines, and you just need to extract a partial sum and apply it anywhere. But I don't quite get the programmatic way... Thanks!

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  • Is it possible to interop with Thunderbird using C#?

    - by Jurily
    Here's the latest hurdle in my ongoing quest to automate my job: All email in the company goes through 4 different email adresses, switching randomly back and forth (with a note attached in the global share: please set "keep email on server") All logic related to email is contained in a nice big Thunderbird profile, which gets copied back and forth to new machines; this includes sorting invoices into 5 different "folders", the list of VIP adresses to send notifications, and the VIP level of those customers I only need the contents of those folders (the attachments, anyway) The question: is there a way to ask Thunderbird for those attachments and lists from C#? Alternatively, can Outlook be set up to synchronize with Thunderbird? Where do I start reading? Ditching Thunderbird is not an option right now, I need to keep up with changes to the VIP list. P.S. I will set up a real email server right after Monkey saves me enough time to convince people about it.

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  • how to build an accumulator array in matlab

    - by schwiz
    I'm very new to matlab so sorry if this is a dumb question. I have to following matrices: im = imread('image.jpg'); %<370x366 double> [y,x] = find(im); %x & y both <1280x1 double> theta; %<370x366 double> computed from gradient of image I can currently plot points one at a time like this: plot(x(502) + 120*cos(theta(y(502),x(502))),y(502) + 120*sin(theta(y(502),x(502))),'*b'); But what I want to do is some how increment an accumulator array, something like this: acc = zeros(size(im)); acc(y,x) = acc(x + 120*cos(theta(y,x)),y + 120*sin(theta(y,x)),'*b')) + 1; It would be nice if the 120 could actually be another matrix containing different radius values as well.

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  • IIS, Impersonation and COM Interop Premission Denied

    - by user315690
    Hello we are in the throws of integrating a Document Management System with Dynamic CRM 4, have done similar things previously but in this instance we are having to reference a COM dll. We've configured the asp.net page (we are bringing the info in via a i-Frame in CRM), setting Impersonation = True in the Webconfig and ensured that Windows authentication is the only method available within IIS. All works as we would expect when logged into the server itself and the page happily does off finds all the relevant documents for the CRM account and presents them to a user in a nice Infragistics CRM styled grid. However trying this from a client workstation we get the following: System.Runtime.InteropServices.COMException (0xC0042335): Permission denied. Impersonation appears to be passing over the correct details but nothing we've tried thus far has been able to make this work outside of logging into the server. Any thoughts as to what we are missing?

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