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• map data structure in pacman

  - by Sam Fisher

  i am trying to make a pacman game in c# using GDI+, i have done some basic work and i have previously replicated games like copter-it and minesweeper. but i am confused about how do i implement the map in pacman, i mean which datastructure to use, so i can use it for moving AI controlled objects and check collisions with walls. i thought of a 2d array of ints but that didnt make sense to me. looking for some help. thanks.

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• Using multiple diagrams per model in Entity Framework 5.0

  - by nikolaosk

  I have downloaded .Net framework 4.5 and Visual Studio 2012 since it was released to MSDN subscribers on the 15th of August.For people that do not know about that yet please have a look at Jason Zander's excellent blog post .Since then I have been investigating the many new features that have been introduced in this release.In this post I will be looking into theIn order to follow along this post you must have Visual Studio 2012 and .Net Framework 4.5 installed in your machine.Download and install VS 20120 using this link.My machine runs on Windows 8 and Visual Studio 2012 works just fine. I have also installed in my machine SQL Server 2012 developer edition. I have also downloaded and installed AdventureWorksLT2012 database.You can download this database from the codeplex website.   Before I start showcasing the demo I want to say that I strongly believe that Entity Framework is maturing really fast and now at version 5.0 can be used as your data access layer in all your .Net projects.I have posted extensively about Entity Framework in my blog.Please find all the EF related posts here. In this demo I will show you how to split an entity model into multiple diagrams using the new enhanced EF designer. We will not build an application in this demo.Sometimes our model can become too large to edit or view.In earlier versions we could only have one diagram per EDMX file.In EF 5.0 we can split the model into more diagrams.1) Launch VS 2012. Express edition will work fine.2) Create a New Project. From the available templates choose a Web Forms application  3) Add a new item in your project, an ADO.Net Entity Data Model. I have named it AdventureWorksLT.edmx.Then we will create the model from the database and click Next.Create a new connection by specifying the SQL Server instance and the database name and click OK.Then click Next in the wizard.In the next screen of the wizard select all the tables from the database and hit Finish.4) It will take a while for our .edmx diagram to be created. When I select an Entity (e.g Customer) from my diagram and right click on it,a new option appears "Move to new Diagram".Make sure you have the Model Browser window open.Have a look at the picture below 5) When we do that a new diagram is created and our new Entity is moved there.Have a look at the picture below  6) We can also right-click and include the related entities. Have a look at the picture below. 7) When we do that the related entities are copied to the new diagram.Have a look at the picture below  8) Now we can cut (CTRL+X) the entities from Diagram2 and paste them back to Diagram1.9) Finally another great enhancement of the EF 5.0 designer is that you can change colors in the various entities that make up the model.Select the entities you want to change color, then in the Properties window choose the color of your choice. Have a look at the picture below. To recap we have demonstrated how to split your entity model in multiple diagrams which comes handy in EF models that have a large number of entities in them Hope it helps!!!!

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• How to retrieve data from a corruped volume

  - by explorex

  Hi, My Ubuntu 10.10 just crashed(probably due to hardware error and in the end I was getting error like Unknown filesystem ..... grub> .. GRUB console before i could take some action) and i reinstalled the same version form USB stick. I had ubuntu installed in ext4 file system and I am also having the same filesystem in the same hard disk on different drive. When I try to access my previous filesystem, i get error Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda6, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so I had some important files in the previous volume, I don't know how to retrieve them. And what are the chances that I would get the same outcome (hardware error)? Please help me!

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• Wiped data, and duplicated folders into files.

  - by Kaustubh P

  Something weird happened today, and I dont know how. Within a folder, all folders have a file by the same name, with a colon appended to it. And all the files from the most inner-most directory in my home, have been dumped to ~, with a size of 0 bytes. I have not executed any scripts or anything. I was just checking out some easter eggs, namely the gegls from outer space and free the fish and was away from the computer and was logged because of the screensaver. I couldnt log-back in with my password, so I just reset the PC, and while booting, the PC went into a drive check. BUT, IIRC, i saw the duplicate "folder files" before I had logged out, so thats not the reason! All the files have a timestamp of 14 Jan. Also, the contents of my eclipse folder have been dumped into ~. Right down to the jars and ini files. HELP!

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• recover data in linux removed with rm

  - by user3717896

  Today i deleted my home directory (in wrong action) with: sudo rm -rf * And when i use extundelete i get this message: root@ubuntu:~# sudo extundelete --restore-directory /home/hamed/ /dev/sda2WARNING: Extended attributes are not restored. Loading filesystem metadata ... 746 groups loaded. Loading journal descriptors ... 29931 descriptors loaded. Searching for recoverable inodes in directory /home/hamed/ ... 498 recoverable inodes found. Looking through the directory structure for deleted files ... 498 recoverable inodes still lost. No files were undeleted. why it can't recover? Anyone can help me to return my Desktop, Documents and etc? I have ubuntu 14.04.

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• Trying to recover deleted Ubuntu partition

  - by user110984

  I made a mistake in logging into my 200 GB Ubuntu partition. I could not access Grub after that. Using a live CD I then ran Boot_Repair and apparently deleted the partition, I guess because I ran it from my 70 GB Windows partition. I can send the results of boot_info before that and of Boot_Repair. Then I ran TestDisk, which apparently found only dev/sda/ -320GB / 298 / GiB - WDC - WD3200BEVT-22A23T0 (Was there any more I could have done with TestDisk? I looked at the TestDisk_Step_By_Step example and found no way forward given that no other partitions turned up) I have run gpart and found this: /sda1 - 15 GB /sda2 - system reserved /sda3 - 70.15 GB /sda4 - extended 212.84 unallocated - 209.10 /sda5 - unknown 3.74 . I have been told I can recover the partition using gparted's Rescue start end command, but I don't know what to enter for start and end. [--EDIT: TestDisk Deeper Search stated that "the following partitions can't be recovered" and listed a 220-GB Linux partition 6 times. Then it stated that "The current number of heads per cylinder is 255 but the correct value may be 128" and I could try to change it in the Geometry menu (because apparently these are overlapping partitions) So should I do that?--]

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• How to retrieve data from a corrupted volume

  - by explorex

  Hi, My Ubuntu 10.10 just crashed, probably due to hardware error (and in the end I was getting errors like Unknown filesystem ..... grub> .., and it went to the GRUB console before I could take any other action). I reinstalled the same version from a USB stick. I had Ubuntu installed with the ext4 file system and I also have the same filesystem in the same hard disk on a different drive. When I try to access my previous filesystem, I get errors: Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda6, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so I had some important files in the previous volume ; I don't know how to retrieve them. And what are the chances that I would get the same outcome (hardware error)? Please help me!

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• What is meant by a primitive data type?

  - by Appy

  My understanding of a primitive datatype is that It is a datatype provided by a language implicitly (Others are user defined classes) So different languages have different sets of datatypes which are considered primitive for that particular language. Is that right? And what is the difference between a "basic datatype" and "built-in datatype". Wikipedia says a primitive datatype is either of the two. PS - Why is "string" type considered as a primitive type in SNOBOL4 and not in Java ?

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• Master Data Management for Product Data

  In this AppsCast, Hardeep Gulati, VP PLM and PIM Product Strategy discusses the benefits companies are getting from Product MDM, more details about Oracle Product Hub solution and the progress, and where we are going from here.

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• In Search Data Structure And Algorithm Project Title Based on Topic

  - by Salehin Suhaimi

  As the title says, my lecturer gave me a project that i needed to finish in 3 weeks before final semester exams. So i thought i will start now. The requirement is to "build a simple program that has GUI based on all the chapter that we've learned." But i got stuck on WHAT program should i build. Any idea a program that is related to this chapter i've learned? Any input will help. list, array list, linked list, vectors, stacks, Queues, ADT, Hashing, Binary Search Tree, AVL Tree, That's about all i can remember. Any idea where can i start looking?

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• Am I sending large amounts of data sensibly?

  - by Sofus Albertsen

  I am about to design a video conversion service, that is scalable on the conversion side. The architecture is as follows: Webpage for video upload When done, a message gets sent out to one of several resizing servers The server locates the video, saves it on disk, and converts it to several formats and resolutions The resizing server uploads the output to a content server, and messages back that the conversion is done. Messaging is something I have covered, but right now I am transferring via FTP, and wonder if there is a better way? is there something faster, or more reliable? All the servers will be sitting in the same gigabit switch or neighboring switch, so fast transfer is expected.

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• Using replacement to get possible outcomes to then search through HUGE amount of data

  - by Samuel Cambridge

  I have a database table holding 40 million records (table A). Each record has a string a user can search for. I also have a table with a list of character replacements (table B) i.e. i = Y, I = 1 etc. I need to be able to take the string a user is searching for, iterate through each letter and create an array of every possible outcome (the users string, then each outcome with alternative letters used). I need to check for alternatives on both lower and uppercase letters in the word A search string can be no longer than 10 characters long. I'm using PHP and a MySQL database. Does anyone have any thoughts / articles / guidance on doing this in an efficient way?

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• Is A Web App Feasible For A Heavy Use Data Entry System?

  - by Rob

  Looking for opinions on this, we're working on a project that is essentially a data entry system for a production line. Heavy data input by users who normally work in Excel or other thick client data systems. We've been told (as a consequence) that we have to develop this as a thick client using .NET. Our argument was to develop as a web app, as it resolves a lot of issues and would be easier to write and maintain. Their argument against the web is that (supposedly) the web is not ready yet for a heavy duty data entry system, and that the web in a browser does not offer the speed, responsiveness, and fluid experience for the end-user that a thick client can (citing things such as drag and drop, rapid auto-entry and data navigation, etc.) Personally, I think that with good form design and JQuery/AJAX, a web app could do everything a thick client does just as well, and they just don't know what they're talking about. The irony is that a thick client has to go to a lot more effort to manage the deployment and connectivity back to the central data server than a web app would need to do, so in terms of speed I would expect a web app to be faster. What are the thoughts of those out there? Are there any technologies currently in production use that modern data entry systems are being developed as web apps in? Appreciate any feedback. Regards, Rob.

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• Pulling Data out of an object in Javascript

  - by PerryCS

  I am having a problem retreiving data out of an object passed back from PHP. I've tried many different ways to access this data and none work. In Firebug I see the following... (it looks nicer in Firebug) - I tried to make this look as close to Firebug as possible results Object { data="{"formName":"form3","formData":"data goes here"}", phpLiveDebug="<...s: 198.91.215.227"} data "{"formName":"form3","formData":"data goes here"}" phpLiveDebug "<...s: 198.91.215.227" I can access phpLiveDebug no problem, but the data portion is an object. I have tried the following... success: function(results) { //$("#formName").val(results.data.formName); //$("#formName").val(results.data[0].formName); //$("#formName").val(results.data[0]); //$("#formName").val(results.data[1]); //$("#formName").val(results.data[0]["formName"]); var tmp = results.data[formName]; alert("!" + tmp + "!"); $("#formName").val(tmp); $("#jqueryPHPDebug").val(results.phpLiveDebug); } This line works in the example above... $("#jqueryPHPDebug").val(results.phpLiveDebug); but... I can't figure out how to get at the data inside the results.data portion... as you can see above, I have been trying different things and more not even listed there. I was really hoping this line would work :) var tmp = results.data[formName]; But it doesn't. So, after many days of reading, tinkering, my solution was to re-write it to return data similar to the phpLiveDebug but then I thought... it's gotta be something simple I'm overlooking... Thank you for your time. Please try and explain why my logic (my horrible attempts at trying to figure out the proper method) above is wrong if you can?

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• MVC null model problem

  - by femi

  hello, i have created two create actions..one to call the create view and the other to process the create view using httppost. when i call the create view, it gets published correctly , dropdowns and all. the problem is that when i fill out the create form and click on the submit button, i get an error; Object reference not set to an instance of an object. My first thoughts are that i am passing a null model to the httppost create action.. How can i check to see if i am passing in a null model to the httppost create action? thanks

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• iPad: Show view as Model View

  - by a111

  hi all, i want to show my view as a model view. In iPad there are four method to show the view as modal which is listed 1. Full Screen 2. Page Sheet 3. Form sheet 4. Current Context i use following code to display the view as model -(void)OpenContactPicker { ABPeoplePickerNavigationController *ContactPicker = [[ABPeoplePickerNavigationController alloc] init]; ContactPicker.peoplePickerDelegate = self; [self presentModalViewController:ContactPicker animated:YES]; //[self.modalViewController presentModalViewController:ContactPicker animated:YES]; [ContactPicker release]; } above code open the view in full screen mode but i want to some different. Please suggest how can i show this view as Page Sheet or Form sheet or Current Context

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• Kohana 3: Example of model with validation

  - by Svish

  I find examples and tutorials about models and about validation. And I places that say the validation (or most of it at least) should be in the model, which I agree with. But I can't any examples or tutorials that show how that should be done. Could anyone help me with a simple example on how that could be done? Where would you have the rules in the model? Where would the validation happen? How would the controller know if the validation passed or fail? How would the controller get error messages and things like that? Hope someone can help, cause feel a bit lost here :p

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• Rails 2.3.5 model name translation problem in error messages

  - by Jason Nerer

  Hi Rails'ers, I encountered some problem while trying to translate my model's names and attributes in a Rails 2.3.5 app. I have the following model: class BillingPlan < ActiveRecord::Base validates_presence_of :billing_option_id belongs_to :order belongs_to :user belongs_to :billing_option end When validation fails, my models attributes are translated correctly, but the modelname itself is not. I use the following translation skeleton in de.yml de: activerecord: models: shipping_plan: "Versandart" billing_plan: "Rechnungsart" attributes: shipping_plan: shipping_option_id: "Versandoption" billing_plan: billing_option_id: "Rechnungsoption" Basis for my translation file is: http://github.com/svenfuchs/rails-i18n/blob/master/rails/locale/de.yml Can anyone help? Thx in advance J.

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• Rails after_create callback can't access model's attributes

  - by tybro0103

  I can't access my model's attributes in the after_create callback... seems like I should be able to right? controller: @dog = Dog.new(:color => 'brown', :gender => 'male') @dog.user_id = current_user.id @dog.save model: class Dog < ActiveRecord::Base def after_create logger.debug "[DOG CREATED] color:#{color} gender:#{gender} user:#{user_id}" end end console: (all seems well) >>Dog.last =>#<Dog id: 1, color: "brown", gender: "male", user_id: 1> log: (wtf!?) ... [DOG CREATED] color: gender:male user ... Some of my attributes show up and others don't! oh no! Anyone know what I'm doing wrong? I've always been able to user after_create in such ways in the past. Note: The actual variable names and values I used were different, but the methods and code are the same.

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• Problems using an id from a model inside a custom sql query in Rails

  - by Thiago

  Hi there, I want to do a model class which associates to itself on Rails. Basically, a user has friends, which are also users. I typed the following inside a User model class: has_many :friends, :class_name => "User", :foreign_key => :user_id, :finder_sql => %{SELECT users.* FROM users INNER JOIN friends ON (users.id = friends.user_id OR users.id = friends.friend_id) WHERE users.id <> #{id}} But the funny fact is that it seems that this finder_sql is called twice whenever I type User.first.friends on irb. Why?

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• WPF Composite - Expose EF model to all modules

  - by Tony

  Hi All, I have an application that uses WPF Composite, and I have an issue. I've got a big database that is attached to the application and I need it exposed to different modules as part of the application. What is the best way to expose my Entity Framework model to all my different modules and views inside them? Do I have one EF model or a separate one for each module and then only the tables that each module needs. The only problem being that some tables have a relationship and will have different views and those views will be in different modules. Any ideas how to resolve this?

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• What is the difference between MVC model 1 and model 2?

  - by Alex Ciminian

  I've recently discovered that MVC is supposed to have two different flavors, model one and model two. I'm supposed to give a presentation on MVC1 and I was instructed that "it's not the web based version, that is refered to as MVC2". As the presentations are about design patterns in general, I doubt that this separation is related to Java (I found some info on Sun's site, but it seemed far off) or ASP. I have a pretty good understanding of what MVC is and I've used several (web) frameworks that enforce it, but this terminology is new to me. How is the web-based version different from other MVC (I'm guessing GUI) implementations? Does it have something to do with the stateless nature of HTTP? Thanks, Alex

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• Rails Model multiple column uniqueness

  - by Jty.tan

  I am making a Viewer model with belongs_to :users belongs_to :orders that joins the models Users and Orders with a :has_many :through => :viewers. And the Viewer model has the attributes of user_id and order_id. How would I set it up so that new viewers are only accepted if both user_id and order_id are unique in the same row? I remember in MySQL being able to do so with a flag (although I can't for the life of me remember what it was), but I'm not sure how to do it with Rails. Can I do something like (for Viewer.rb) validates_uniqueness_of :user_id, :scope => :order_id?

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• MVC Entity Model not showing my table

  - by Jessica

  I have a database with multiple tables, and some basic relationships. Here is an example of the problem I am having: My Database: **Org** ID Name etc **Detail1** ID D1name **Org_Detail1** Org_ID Detail1_ID **Detail2** ID D2Name **Org_Detail2** Org_ID Detial1_ID BooleanField My problem is, the Org_detail1 table is not showing up in the entity model, but the Org_Details2 table does. I thought it may have been because the Org_Detail1 table only contains two ID fields that are both primary keys, while the Org_Details2 table contains 2 primary key ID fields as well as a boolean field. If I add a dummy field to Org_detail1 and update it, it still won't show up and wont allow me to add a new entity relating to the Org_Detail1 table. The table won't even show up in the list, but it is listed under the tables. Is there any solution to get this table to appear in my model?

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• access model from view in codeigniter?

  - by sonill

  can anyone tell me how do i access model from view in codeigniter?

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