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  • What is the best way to save a list of objects to an XML file and load that list back using C#?

    - by Siracuse
    I have a list of "Gesture" classes in my application: List<Gesture> gestures = new List<Gesture>(); These gesture classes are pretty simple: public class Gesture { public String Name { get; set; } public List<Point> Points { get; set; } public List<Point> TransformedPoints { get; set; } public Gesture(List<Point> Points, String Name) { this.Points = new List<Point>(Points); this.Name = Name; } } I would like to allow the user to both save the current state of "gestures" to a file and also be able to load a file that contains the data of the gestures. What is the standard way to do this in C#? Should I use Serialization? Should I write a class to handle writing/reading this XML file by hand myself? Are there any other ways?

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  • Running a python script on all the files in a directory.

    - by S1syphus
    I have a Python script that reads through a text csv file and creates a playlist file. However I can only do one at a time, like: python playlist.py foo.csv foolist.txt However, I have a directory of files that need to be made into a playlist, with different names, and sometimes a different number of files. So far I have looked at creating a txt file with a list of all the names of the file in the directory, then loop through each line of that, however I know there must be an easier way to do it.

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  • How do I associate Parameters to Command objects in ADO with VBScript?

    - by Krashman5k
    I have been working an ADO VBScript that needs to accept parameters and incorporate those parameters in the Query string that gets passed the the database. I keep getting errors when the Record Set Object attempts to open. If I pass a query without parameters, the recordset opens and I can work with the data. When I run the script through a debugger, the command object does not show a value for the parameter object. It seems to me that I am missing something that associates the Command object and Parameter object, but I do not know what. Here is a bit of the VBScript Code: ... 'Open Text file to collect SQL query string' Set fso = CreateObject("Scripting.FileSystemObject") fileName = "C:\SQLFUN\Limits_ADO.sql" Set tso = fso.OpenTextFile(fileName, FORREADING) SQL = tso.ReadAll 'Create ADO instance' connString = "DRIVER={SQL Server};SERVER=myserver;UID=MyName;PWD=notapassword; Database=favoriteDB" Set connection = CreateObject("ADODB.Connection") Set cmd = CreateObject("ADODB.Command") connection.Open connString cmd.ActiveConnection = connection cmd.CommandText = SQL cmd.CommandType = adCmdText Set paramTotals = cmd.CreateParameter With paramTotals .value = "tot%" .Name = "Param1" End With 'The error occurs on the next line' Set recordset = cmd.Execute If recordset.EOF then WScript.Echo "No Data Returned" Else Do Until recordset.EOF WScript.Echo recordset.Fields.Item(0) ' & vbTab & recordset.Fields.Item(1) recordset.MoveNext Loop End If The SQL string that I use is fairly standard except I want to pass a parameter to it. It is something like this: SELECT column1 FROM table1 WHERE column1 IS LIKE ? I understand that ADO should replace the "?" with the parameter value I assign in the script. The problem I am seeing is that the Parameter object shows the correct value, but the command object's parameter field is null according to my debugger.

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  • using the window object for accessing global user defined objects and using text within html for cre

    - by timpone
    I don't do very much jquery / javascript but wanted to ask for some advice on the following piece. I have tried to cut out as much as possible. Most of this was semi-inherited code with catching a bunch of events just hardcoded in. I'd like to generalized them more by putting the object name in the html and accessing via jquery on processing (by_date, by_popularity). I retriev as string and access the object via window[current_obj]. Is this a good way to do this or am I missing something? Are there preferable ways to introduce specificity. thanks for any advice. <script> var by_date={}; by_date.current_page=1; by_date.per_page=4; var by_popularity={}; by_popularity.current_page=1; by_popularity.per_page=4; $(function(){ $('.previous.active').live('click',function(){ window[current_obj].current_page--; process(window[current_obj]); }); }); function process(game_obj){ //will process and output new items here } </script> <div class="otherContainer"> <a class='previous active'>Prev</a><div style="display:none;">by_date</div> | <a class='next'>Next</a><div style="display:none;">by_date</div> </div> <div class="topPrevNextContainer"> <a class='previous active'>Prev</a><div style="display:none;">by_popularity</div> | <a class='next'>Next</a><div style="display:none;">by_popularity</div> </div>

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  • if SWFupload running, on tab change alert… idTabs jquery

    - by robertdd
    I use idTabs, in the first tab I have swfuploading, if i have to upload 30 images and i want to change the tab, while uploading, the upload stop! how can I call a function only if swfupload make upload, to alert the client? this function is called when a tab is clicked $(function(){ $(".usual ul a").click(function(){ alert('aaa'); }); }); thanks!

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  • How to architect Rails site that can be edited while running?

    - by Chris Kimpton
    Hi, I am writing a Rails app that "scrapes/navigates" some other websites and webservices for content. I am using Mechanize and Savon to do the heavylifting. But given the dynamic nature of the web, I'd like to make my calls to these editable by the admin users of the site - rather than requiring me to release a new version of the site. The actual scraping thread happens async to the website, using the daemons gem. My requirements are: Thinking that the scraping/webservice calling code is quite simple, the easiest route is to make the whole class editable by the admins. Keep a history of the scraping code - so that we can fairly easily revert if we introduce a problem. Initially use the code from the file system, but as soon as thats been edited and stored somewhere, to use that code instead. I am thinking my options are: Store the code in the db (with a history table for the old versions) Store the code in a private git repo somewhere and access that for the history/latest versions. I am thinking the git route might be easiest, given its raison d'etre is to track file history... But perhaps there is a gem/plugin that does all this for me, out of the box? Thanks in advance for any tips/advice. ~chris

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  • Disable all non-clustered indexes

    - by spender
    I select a number of non-clustered indexes from my database with the following: SELECT sys.objects.name tableName, sys.indexes.name indexName FROM sys.indexes JOIN sys.objects ON sys.indexes.object_id = sys.objects.object_id WHERE sys.indexes.type_desc = 'NONCLUSTERED' AND sys.objects.type_desc = 'USER_TABLE' I'd like to run the following over each of the results: ALTER INDEX indexName ON tableName DISABLE How would I go about doing this? Is there a better way?

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  • Java swing examples - Ants running around a world getting food from piles?

    - by Charlie
    I haven't done any swing programming in a while, so I'm looking for some GUI examples that are at least close to what I'm trying to do. The gui that I'll need to be representing is small nodes (let's say ants) travelling around collecting food from food piles (which just means small nodes travelling to bigger nodes). Once the node (ant) takes a piece of food, the pile shrinks a bit and the ant takes it back home (to ANOTHER circle). This SOUNDS pretty trivial, but all of the boilerplate involved in setting up a java GUI just makes little logical sense to me, and the GUI is such a small piece of my project. Any examples that would be great for this style of project would be greatly appreciated. Thanks!

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  • Running a Windows Forms app. from a service.

    - by RemotecUk
    Hi, I have a strange application in that for development and testing I need a windows forms application so that I can monitor what it is doing. For production, the application will be started from a service and no visible UI is needed. I dont really want to re-write the app. once it is completed into a console app so I would like to leave it as it but start it from the service. My question is will this application work fine from a service? At the moment it has UI elements and I have been able to successfully start the application from a service using the Process class (System.Diagnostics). Could anything go wrong with this approach?

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  • Is it possible to get code coverage data for a GWT web app running tests from the web browser?

    - by jeff
    I am not sure if this is possible but I would like some way to get code coverage information for tests that are written in Quick Test for our GWT based web app. It does not seem like there is any solution because the Quick Test Pro tests are testing against the GWT compiled app and not the original java code in which the app was written. I suppose I could get coverage data on the javascript that the GWT compiler creates, but there would be no way for me (that I know of) to map this information back to the original java code. Is there some way to do this?

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  • How to make a try-catch block that iterates through all objects of a list and keeps on calling a met

    - by aperson
    Basically iterating through a list and, - Invoke method on first object - Catch first exception (if any); if there are no more exceptions to catch, return normally. Otherwise, keep on invoking method until all exceptions are caught. - Move on to next object. I can iterate through each object, invoke the method, and catch one exception but I do not know how to continuously invoke the method on it and keep on catching exceptions :S Thanks :)

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  • Cache of Objects or OutPut in View ? Wich is better ?

    - by Felipe
    Hi everybody, I have an ecommerce working in ASP.Net MVC. i'm using Caching to improve more performace in my pages and it's working fine. I'd link to know what is more performative, for example, I can set OutPutCache in my views and and use this cache for all page OR I could get my List of Products in controller, put it on cache (like the code below) and send it to View to render for the user??? private IEnumerable<Products> GetProductsCache(string key, ProductType type) { if (HttpContext.Cache[key] == null) HttpContext.Cache.Insert(key, ProductRepository.GetProducts(type), null, DateTime.Now.AddMinutes(10), Cache.NoSlidingExpiration); return (IEnumerable<Products>)HttpContext.Cache[key]; } public ActionResult Index() { var home = new HomeViewModel() { Products = GetProductsCache("ProductHomeCache", ProductType.Product) Services = GetProductsCache("ServiceHomeCache", ProductType.Service) }; return View(home); } Both works fine, but I'd like to know what is suggested to improve more performace ? Or is there others way to do it better ? PS: sorry for my english! thanks all... Cheers

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  • Advice for Architecture Design Logic for software application

    - by Prasad
    Hi, I have a framework of basic to complex set of objects/classes (C++) running into around 500. With some rules and regulations - all these objects can communicate with each other and hence can cover most of the common queries in the domain. My Dream: I want to provide these objects as icons/glyphs (as I learnt recently) on a workspace. All these objects can be dragged/dropped into the workspace. They have to communicate only through their methods(interface) and in addition to few iterative and conditional statements. All these objects are arranged finally to execute a protocol/workflow/dataflow/process. After drawing the flow, the user clicks the Execute/run button. All the user interaction should be multi-touch enabled. The best way to show my dream is : Jeff Han's Multitouch Video. consider Jeff is playing with my objects instead of the google maps. :-) it should be like playing a jigsaw puzzle. Objective: how can I achieve the following while working on this final product: a) the development should be flexible to enable provision for web services b) the development should enable easy web application development c) The development should enable client-server architecture - d) further it should also enable mouse based drag/drop desktop application like Adobe programs etc. I mean to say: I want to economize on investments. Now I list my efforts till now in design : a) Created an Editor (VB) where the user writes (manually) the object / class code b) On Run/Execute, the code is copied into a main() function and passed to interpreter. c) Catch the output and show it in the console. The interpreter can be separated to become a server and the Editor can become the client. This needs lot of standard client-server architecture work. But some how I am not comfortable in the tightness of this system. Without interpreter is there much faster and better embeddable solution to this? - other than writing a special compiler for these objects. Recently learned about AXIS-C++ can help me - looks like - a friend suggested. Is that the way to go ? Here are my questions: (pl. consider me a self taught programmer and NOT my domain) a) From the stage of C++ objects to multi-touch product, how can I make sure I will develop the parallel product/service models as well.? What should be architecture aspects I should consider ? b) What technologies are best suited for this? c) If I am thinking of moving to Cloud Computing, how difficult/ how redundant / how unnecessary my efforts will be ? d) How much time in months would it take to get the first beta ? I take the liberty to ask if any of the experts here are interested in this project, please email me: [email protected] Thank you for any help. Looking forward.

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  • Running bundle install fails trying to remote fetch from rubygems.org/quick/Marshal...

    - by dreeves
    I'm getting a strange error when doing bundle install: $ bundle install Fetching source index for http://rubygems.org/ rvm/rubies/ree-1.8.7-2010.02/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:304 :in `open_uri_or_path': bad response Not Found 404 (http://rubygems.org/quick/Marshal.4.8/resque-scheduler-1.09.7.gemspec.rz) (Gem::RemoteFetcher::FetchError) I've tried bundle update, gem source -c, gem update --system, gem cleanup, etc etc. Nothing seems to solve this. I notice that the URL beginning with http://rubygems.org/quick does seem to be a 404 -- I don't think that's any problem with my network, though if that's reachable for anyone else then that would be a simple explanation for my problem. More hints: If I just gem install resque-scheduler it works fine: $ gem install resque-scheduler Successfully installed resque-scheduler-1.9.7 1 gem installed Installing ri documentation for resque-scheduler-1.9.7... Installing RDoc documentation for resque-scheduler-1.9.7... And here's my Gemfile: source 'http://rubygems.org' gem 'json' gem 'rails', '>=3.0.0' gem 'mongo' gem 'mongo_mapper', :git => 'git://github.com/jnunemaker/mongomapper', :branch => 'rails3' gem 'bson_ext', '1.1' gem 'bson', '1.1' gem 'mm-multi-parameter-attributes', :git=>'git://github.com/rlivsey/mm-multi-parameter-attributes.git' gem 'devise', '~>1.1.3' gem 'devise_invitable', '~> 0.3.4' gem 'devise-mongo_mapper', :git => 'git://github.com/collectiveidea/devise-mongo_mapper' gem 'carrierwave', :git => 'git://github.com/rsofaer/carrierwave.git' , :branch => 'master' gem 'mini_magick' gem 'jquery-rails', '>= 0.2.6' gem 'resque' gem 'resque-scheduler' gem 'SystemTimer' gem 'capistrano' gem 'will_paginate', '3.0.pre2' gem 'twitter', '~> 1.0.0' gem 'oauth', '~> 0.4.4'

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  • if SWFupload running, on tab change alert... idTabs jquery

    - by robertdd
    I use idTabs, in the first tab I have swfuploading, if i have to upload 30 images and i want to change the tab, while uploading, the upload stop! how can I call a function only if swfupload make upload, to alert the client? this function is called when a tab is clicked $(function(){ $(".usual ul a").click(function(){ alert('aaa'); }); }); thanks!

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  • What is the recommended way for calling remote JSON objects from native blackberry apps?

    - by jpartogi
    Dear all, IF I am to develop a native application on blackberry, what would be the recommended way to call remote JSON object? As I understand native blackberry apps is coded using Java, would it still be able to contact a remote JSON object from Ruby on Rails? Has there been any blackberry framework to ease this use case? Thank you very much for your help. I really appreciate it.

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  • How does void QTableWidget::setItemPrototype ( const QTableWidgetItem * item ) clones objects?

    - by chappar
    QTableWidget::setItemPrototype says following. "The table widget will use the item prototype clone function when it needs to create a new table item. For example when the user is editing in an empty cell. This is useful when you have a QTableWidgetItem subclass and want to make sure that QTableWidget creates instances of your subclass." How does this actually work as you can pass any of the QTableWidgetItem subclass pointer to setItemPrototype and at run time there is no way you can get the size of an object having just pointer to it?

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  • What's the easiest/fast way to get my website up and running on the web?

    - by ggfan
    This is probably a really really beginner's question, but I would like to know what's the fastest way to get my site on the web so that people can start using it. I'm learning everything about programming out of books and at home so I don't have much experience. --Before I go to like godaddy.com or such site to get a domain name, is there any free sites that would allow me to upload my site so users can use it? I have html,css,php,mysql,javascipt in my scripts so I don't think many sites allow free uploads with such languages. --If I can't find a free site, is there any good places to get a domain name and web hosting that supports most languages at a low price? (doesn't have to be professional hosting because I am still a beginner) --If I go to say godaddy.com and get their webhosting and domain name, would I be allowed to run php,mysql,python,java on it? (I looked at some hosting sites and most only allow php/mysql)

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  • Double Buffering for Game objects, what's a nice clean generic C++ way?

    - by Gary
    This is in C++. So, I'm starting from scratch writing a game engine for fun and learning from the ground up. One of the ideas I want to implement is to have game object state (a struct) be double-buffered. For instance, I can have subsystems updating the new game object data while a render thread is rendering from the old data by guaranteeing there is a consistent state stored within the game object (the data from last time). After rendering of old and updating of new is finished, I can swap buffers and do it again. Question is, what's a good forward-looking and generic OOP way to expose this to my classes while trying to hide implementation details as much as possible? Would like to know your thoughts and considerations. I was thinking operator overloading could be used, but how do I overload assign for a templated class's member within my buffer class? for instance, I think this is an example of what I want: doublebuffer<Vector3> data; data.x=5; //would write to the member x within the new buffer int a=data.x; //would read from the old buffer's x member data.x+=1; //I guess this shouldn't be allowed If this is possible, I could choose to enable or disable double-buffering structs without changing much code. This is what I was considering: template <class T> class doublebuffer{ T T1; T T2; T * current=T1; T * old=T2; public: doublebuffer(); ~doublebuffer(); void swap(); operator=()?... }; and a game object would be like this: struct MyObjectData{ int x; float afloat; } class MyObject: public Node { doublebuffer<MyObjectData> data; functions... } What I have right now is functions that return pointers to the old and new buffer, and I guess any classes that use them have to be aware of this. Is there a better way?

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  • Two objects with dependencies for each other. Is that bad?

    - by Kasper Grubbe
    Hi SO. I am learning a lot about design patterns these days. And I want to ask you about a design question that I can't find an answer to. Currently I am building a little Chat-server using sockets, with multiple Clients. Currently I have three classes. Person-class which holds information like nick, age and a Room-object. Room-class which holds information like room-name, topic and a list of Persons currently in that room. Hotel-class which have a list of Persons and a list of Rooms on the server. I have made a diagram to illustrate it (Sorry for the big size!): http://i.imgur.com/Kpq6V.png I have a list of players on the server in the Hotel-class because it would be nice to keep track of how many there are online right now (Without having to iterate through all of the rooms). The persons live in the Hotel-class because I would like to be able to search for a specific Person without searching the rooms. Is this bad design? Is there another way of achieve it? Thanks.

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  • How to debug a GWT application running on OSGi?

    - by Jaime Soriano
    I'm developing a web UI using GWT. While working only with the widgets I could debug from Eclipse using the Firefox extension, but now that I'm integrating the UI with other OSGi bundles I cannot use this solution. For deploying the GWT application I create the .war and convert it to an OSGi bundle using BND. Then I launch the OSGi container with all the bundles using Pax Runner and Pax Web and the application works correctly, but when something fails in the generated javascript code I don't have any decent output error or debugging facility. Is there any way to launch the GWT application in "debug mode" from OSGi? Any other idea that could help in this scenario?

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