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  • Integer type or not [closed]

    - by kira
    I am writing a program (in cpp) to check the primality of a given number The point where i am struck is , I need to check in between the program wether the value i obtained upon some arithmetic operations on the input is an integer or not i.e lets say input is 'a' I want to know how to check if 'b' is integer or not (FYI, b=(a+1)/6 ) My attempt for this : int main() { using std::cin; using std::cout; int b,c; int a; cout<<"enter the number"; cin>>a; b=(a+1)/6; c=(a-1)/6; if (b is an integer) cout << "The given number is prime"; else if (c is an integer) cin << "The given number is prime!"; else cout<<"The number is not prime"; return 0; }

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  • CodePlex Daily Summary for Tuesday, August 19, 2014

    CodePlex Daily Summary for Tuesday, August 19, 2014Popular ReleasesVG-Ripper & PG-Ripper: VG-Ripper 2.9.62: changes NEW: Added Support for 'MadImage.org' links NEW: Added Support for 'ImgSpot.org' links NEW: Added Support for 'ImgClick.net' links NEW: Added Support for 'Imaaage.com' links NEW: Added Support for 'Image-Bugs.com' links NEW: Added Support for 'Pictomania.org' links NEW: Added Support for 'ImgDap.com' links NEW: Added Support for 'FileSpit.com' links FIXED: 'ImgSee.me' linksLinq 4 Javascript: Version 2.4: Minor Changes Made Added Count() and Count(with where clause) Distinct will now use a dictionary instead of a custom dictionary object Organize the unit tests. The variable names will actually make sense and won't be 2 letters. SelectMany will now use the queryable logic.Magick.NET: Magick.NET 7.0.0.0001: Magick.NET linked with ImageMagick 7-Beta.CMake Tools for Visual Studio: CMake Tools for Visual Studio 1.2: This release adds the following new features and bug fixes from CMake Tools for Visual Studio 1.1: Added support for CMake 3.0. Added support for word completion. Added IntelliSense support for the CMAKEHOSTSYSTEM_INFORMATION command. Fixed syntax highlighting for tokens beginning with escape sequences. Fixed issue uninstalling CMake Tools for Visual Studio after Visual Studio has been uninstalled.GW2 Personal Assistant Overlay: GW2 Personal Assistant Overlay 1.1: Overview1.1 is the second 'stable' release of the GW2 Personal Assistant Overlay. This version includes just a couple of very minor features and some minor bug fixes. For details regarding installation, setup, and general use, see Documentation. Note: If you were using a previous version, you will probably want to copy over the following user settings files: GW2PAO.DungeonSettings.xml GW2PAO.EventSettings.xml GW2PAO.WvWSettings.xml GW2PAO.ZoneCompletionSettings.xml New FeaturesAdded new "No...OpenCppCoverage: OpenCppCoverage 0.9.1: - Add Jenkins support. - Command line argument can be placed inside a config file. If you do not have Visual Studio C++ 2013 you need to download redistributable packages: http://www.microsoft.com/en-us/download/details.aspx?id=40784Easy Backup Windows Service: Release 2.0 with CU: Fix log error when "To" directory not exist in fyle system. Force run program as administrator by default. Add 'everyday' schedule element. Update solution to VS 2013.Easy Backup Application: Release 2.0 with CU: Fix log error when "To" directory not exist in fyle system. Fix app location initialization. Force run program as administrator by default. Update solution to VS 2013.TEBookConverter: 1.5: Added: Turkish and French translations Added: A few interface changes Removed: SkinDynamulet: Dynamulet v0.1: DynamoDB Transaction Server v0.1Console parallel nunit tests runner: ConsoleUnitTestsRunner 1.03: bugfixingFluentx: Fluentx v1.5.3: Added few more extension methods.fastJSON: v2.1.2: 2.1.2 - bug fix circular referencesJPush.NET: JPush Server SDK 1.2.1 (For JPush V3): Assembly: 1.2.1.24728 JPush REST API Version: v3 JPush Documentation Reference .NET framework: v4.0 or above. Sample: class: JPushClientV3 2014 Augest 15th.SEToolbox: SEToolbox 01.043.008 Release 1: Changed ship/station names to use new DisplayName instead of Beacon/Antenna. Fixed issue with updated SE binaries 01.043.018 using new Voxel Material definitions.Google .Net API: Drive.Sample: Google .NET Client API – Drive.SampleInstructions for the Google .NET Client API – Drive.Sample</h2> http://code.google.com/p/google-api-dotnet-client/source/browse/?repo=samples#hg%2FDrive.SampleBrowse Source, or main file http://code.google.com/p/google-api-dotnet-client/source/browse/Drive.Sample/Program.cs?repo=samplesProgram.cs <h3>1. Checkout Instructions</h3> <p><b>Prerequisites:</b> Install Visual Studio, and <a href="http://mercurial.selenic.com/">Mercurial</a>.</p> ...FineUI - jQuery / ExtJS based ASP.NET Controls: FineUI v4.1.1: -??Form??????????????(???-5929)。 -?TemplateField??ExpandOnDoubleClick、ExpandOnEnter、ExpandToSelectRow????(LZOM-5932)。 -BodyPadding???????,??“5”“5 10”,???????????“5px”“5px 10px”。 -??TriggerBox?EnableEdit=false????,??????????????(Jango_Jing-5450)。 -???????????DataKeyNames???????????(yygy-6002)。 -????????????????????????(Gnid-6018)。 -??PageManager???AutoSizePanelID????,??????????????????(yygy-6008)。 -?FState???????????????,????????????????(????-5925)。 -??????OnClientClick???return?????????(FineU...DNN CMS Platform: 07.03.02: Major Highlights Fixed backwards compatibility issue with 3rd party control panels Fixed issue in the drag and drop functionality of the File Uploader in IE 11 and Safari Fixed issue where users were able to create pages with the same name Fixed issue that affected older versions of DNN that do not include the maxAllowedContentLength during upgrade Fixed issue that stopped some skins from being upgraded to newer versions Fixed issue that randomly showed an unexpected error during us...WordMat: WordMat for Mac: WordMat for Mac has a few limitations compared to the Windows version - Graph is not supported (Gnuplot, GeoGebra and Excel works) - Units are not supported yet (Coming up) The Mac version is yet as tested as the windows version.MFCMAPI: August 2014 Release: Build: 15.0.0.1042 Full release notes at SGriffin's blog. If you just want to run the MFCMAPI or MrMAPI, get the executables. If you want to debug them, get the symbol files and the source. The 64 bit builds will only work on a machine with Outlook 2010/2013 64 bit installed. All other machines should use the 32 bit builds, regardless of the operating system. Facebook BadgeNew Projectsangle.works: Angle.works sample solutionAutomatically Update CMS from SCOM: Microsoft Central Management Server (CMS) was released with SQL Server 2008; however keeping the server list up-to-date is challenging.BLE for NETMF: Class library targeted to .NET Micro Framework for BLE support (both central and peripheral profiles).CIIS: ciisClipboard Calculator: Simple tool to calculate numbers from the clipboard. Useful for SQL Server Management Studio User.CYCLOPS: CYCLOPS is a project that seeks to aid the development and testing of ANPR software. CYCLOPS provides a virtual camera and virtual frame grabber for image procedemo4: demo4eAsset: Web based Fixed Asset Management SystemEFML-Runtime: Create applications with xml,css,js feeadmin: Complete fee managementFinal Fantasy VI Randomizer: This is a simple program that randomizes skills, items, and characters in Final Fantasy VI. It is used for racing the game.Object Editor: Object Editor is a visual editor which allows to edit any properties of any class and to simplify the changing and displaying of a class instance.pbb: Pinoy Badminton Buddies Web ApplicationRubyFeed: RubyFeed is a stand-alone HTML5 page for Internet Explorer on Windows 8 and above that makes it easy to view and manage your Windows RSS Platform feeds.

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  • How can I make sure my evening project code is mine?

    - by Sebastian
    I'm a physicist with a CS degree and just started my PhD at a tech company (wanted to do applied research). It deals with large scale finite element simulations. After reviewing their current approach, I think that a radically different method has to be applied (they are using a commercial tool which is very limited). I'd rather base my research on an open source finite element solver and write a program which makes use of it. I'd like to develop this idea in the evenings, because that's the time that best suits me for programming (during the day I prefer reading and maths) and use it at a late stage of my PhD. I'd like to have the option to release my program as open source on my website as a reference, for future personal or even commercial (e.g. consulting) use. How can I make sure that my company doesn't claim the code ownership? I don't really I thought that a version control system could help (check out only in the evening). This would document that I programmed not during regular office hours (documented elsewhere). But these data can be easily manufactured. Any other ideas? I want to stress that I'm not interested in selling software. Jurisdiction is EU, if that matters. Thank you.

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  • I'm having two Windows 7 installed and running in my laptop. How can I delete the other one?

    - by mandy
    I have another concern with my laptop. When I had a problem with the microphone, I tried to restore the system. But sadly, I had a mistake with the process and accidentally it was formatted. Its a built in laptop. (Toshiba m840, Windows 7, 64 bit) After the format process, programs were automatically installed. Until a friend of mine told me that I might have 2 Windows installed already. When we checked the program, he was right. I'm having 2 program files folders, which means I really have 2 Windows installed and running in my laptop. Supposed to be, there should be only 1 right? Can anyone help me how to delete the other Windows? Because I think it is occupying much space in the hard drive. They say it could make my laptop become slower.

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  • Basic questions while making a toy calculator

    - by Jwan622
    I am making a calculator to better understand how to program and I had a question about the following lines of code: I wanted to make my equals sign with this C# code: private void btnEquals_Click(object sender, EventArgs e) { if (plusButtonClicked == true) { total2 = total1 + Convert.ToDouble(txtDisplay.Text); //double.Parse(txtDisplay.Text); } else if (minusButtonClicked == { total2 = total1 - double.Parse(txtDisplay.Text) } } txtDisplay.Text = total2.ToString(); total1 = 0; However, my friend said this way of writing code was superior, with changes in the minus sign. private void btnEquals_Click(object sender, EventArgs e) { if (plusButtonClicked == true) { total2 = total1 + Convert.ToDouble(txtDisplay.Text); //double.Parse(txtDisplay.Text); } else if (minusButtonClicked == true) { double d1; if(double.TryParse(txtDisplay.Text, out d1)) { total2 = total1 - d1; } } txtDisplay.Text = total2.ToString(); total1 = 0; My questions: 1) What does the "out d1" section of this minus sign code mean? 2) My assumption here is that the "TryParse" code results in fewer systems crashes? If I just use "Double.Parse" and I don't put anything in the textbox, the program will crash sometimes right?

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  • Will learning to use Fedora also teach me my way around Redhat (CentOS)?

    - by Matt Untsaiyi
    I want to dive into the open source world and start using a Linux distro while learning to program. I've looked over the options and it pretty much boils down to Fedora or CentOS. The reasoning behind it is I'm hoping to kill two birds with one stone... Redhat seems to be "the choice" for servers, so I figure as I learn to program, I can also learn my way around Linux... or Redhat more specifically... and get that under my belt too. I want to use Fedora, and be on the frontier of new software (since I'm not doing anything critical), but if it's completely different than Redhat I'd rather just use CentOS. So is it? Or can I use one and know the other?

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  • Meet the Spec Leads & Active JSRs

    - by heathervc
    For your Monday reading pleasure, the JCP has published Spec Lead Profiles of In Progress/Active JSRs--there are 35 of these Spec Leads!  Find out more about these dedicated community leaders.  In preparing these profiles, the PMO also asked Specification Leads to tell about their experiences  as Spec Leads.  There were many themes that emerged around transparency, openness, agility and participation.  This led to a related article for those interested in learning about the experience of participating in the development of a Java Specification through the JCP program, see: "Active Specification Leads Offer Best Practices and Tips for Success". In Progress/Active JSRs were also reported on in the PMO Presentation during the last JCP EC Face-to-Face meeting in September 2012.   Now is a good time to start thinking about nominations for Star Spec Leads.  Nominations for 2012 are now open.  Anyone can submit a nomination for Star Spec Lead; however, we ask that you nominate an active JSR Spec Lead, operating a JSR under JCP program version 2.8 (introduced October 2011) or above.  Nominations close 31 December 2012.

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  • How to automate slipstream?

    - by Gregory MOUSSAT
    Since years I use slipstreamed Windows installations. This works very well, but preparing them is tedious : 1 - install a Windows with the last slipstreamed version we have (automated install) 2 - check Windowsupdate to see what's new, and take note 3 - download each new update available 4 - go to step 2 until no new update is available 5 - slipstream them into the last version we have (I already automated this step) I'd like a way to automate parts or all of this. Maybe a program able to know which updates are installed (already saw one, I don't remember which, and I know PowerShell can do this)... and able to download them ? Or to get them from local disk ? So the steps become : 1 - install a Windows with the last slipstreamed version we have (automated install) 2 - use Windowsupdate until no new update is available (any way to automate ?) 3 - use the magic program 4 - slipstream

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  • Fixing Windows 7 explorer issues

    - by Cegorach
    OK, so here is the problem I'm hoping you guys can help me fix. On my Win7-Ult64 box, my explorer (among other things) has decided not to work. For example, if I try to use a program, say Chrome, to open a folder, I will get the message "Class not registered" (and its not program specific). In the same vein, when I go to Start-Rclick Computer-properties, nothing happens, but I can go to control panel-system properties and it will work. And other items in the control panel do nothing when I click them (and I have a feeling it is all tied together). I have already done multiple virus and spyware sweeps, so I know that isn't the problem. Any suggestions on what could be causing this/how to fix it (short of nuke and boot)?

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  • Hard-drive will randomly fail to load GRUB. Booting a live USB/CD fixes the issue temporarily

    - by Usagi
    I am running 12.04 64-bit and am dual booting with Win7, for full disclosure, although I suspect that has nothing to do with my problem. Occasionally the boot-loader(GRUB) will fail to load and I will be presented with a black screen with a single blinking line. There is no apparent pattern although I suspect there is one and it is related to a program I am running. This has happened to me eight out of ten power cycles now and I can fix it consistently, however, I have no idea why it happens. My current fix is to boot a live CD (I've tried both KNOPPIX and Ubuntu with the same result) and that's it. Somehow booting with the live CD is enough to "wake-up" my hard drive. I then reboot and GRUB magically appears again. So what is going on? Is it possible that a program is corrupting my MBR and the live CD is restoring it? How can I narrow down the possibilities? Thanks. Additional: This is still a problem. I'm convinced now that it is not hardware related as I've spent the last month and several boot cycles on Windows without a hiccup. Recently when I started using Ubuntu again the problem started again. I am more interested in figuring out what is going on rather than actually fixing the problem. Are there any tools, logs, etc. I can use to unravel this mystery?

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  • What are your most useful textexander (or similar) snippets?

    - by P.Bjorklund
    Textexpander is a program that aims to save you time by auto-replacing snippets of text with the content of your choice, or to quote their Web site: "Save yourself time and effort by typing short abbreviations for frequently-used text and images." So for instance when you type ,h1 it will change it to <h1></h1> with the cursor placed between the <. After some searching I have yet to find a resource/forum-thread/whatnot that discuss the uses of this marvelous program. I am therefor looking for your best snippets or a link to a resource where I can find this. Oh and one thing I can think of right away is sigw, sigp for my work/personal email signature.

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  • 100% CPU in QuickTime H.264 decoder on Windows on Win7, except when using XP compat. mode

    - by user858518
    I have a Windows program that uses the Apple QuickTime API to play video. On Windows 7, CPU usage is 100% on one core, which I believe is why the playback is choppy. If I turn on XP compatibility mode for this program, the CPU usage is around 20% of one core, and playback is normal. Using a profiling tool called Very Sleepy (http://www.codersnotes.com/sleepy), I was able to narrow down the high CPU usage to a function in the QuickTime H.264 decoder called JVTCompComponentDispatch. I can't imagine why there would be a difference in CPU usage when XP compatibility mode is turned off or on. Any ideas?

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  • Where do I find Nmake for Windows XP

    - by Shrujan
    Regarding BioPerl installation in Windows XP, I have installed Active Perl in Windows XP, and by using Perl Package Manager I have installed the BioPerl Repositories too. But I am not able to run the BioPerl yet. While running the BioPerl program in emacs it is showing the following error: make -k 'make' is not recognized as internal or external command, operable program or batch file I have tried to install Nmake for Windows but this error is showing. No webpage was found for the web address: http://download.microsoft.com/download/vc15/patch/1.52/w95/en-us/nmake15.exe How could this be resolved?

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  • is it possible to access/write database ms access 2003 .mdb at the same time?

    - by tintincute
    hi i have a problem, i have a user who created a database using ms access 2003 the problem is, if he's opening the db and made some changes, the other user can open the db but they can't work on it. but if he's exited the program, then the user can make some changes. i would like to know if its possible; that they can work at the same time when they open the database? Thanks I attached a .jpg here to see the program: www.freeimagehosting.net/image.php?ed11af4cc5.jpg additional jpg: http://www.freeimagehosting.net/image.php?3c60d8e046.jpg additional question: I tried to do the "Splitting of Database" here and after I clicked on Split I got an error: "The database engine couldn't lock the table, because it is already in use by another person or process"... what does that mean? Did I lock the table? www.freeimagehosting.net/image.php?fc52cfc486.jpg

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  • How do I get around UAC in window 7 for a reboot with the option to abort

    - by Friendly Fire
    I've been using PSshutdown remotely on our Windows XP machines for our weekly reboots because of its ability to reboot with the ability to abort the operation. I use ShTasks to create the weekly task. The Problem is on Windows 7 the task is created but never executes because of UAC even when I run the batch using an administrator command line, or with the elevate privileges switch. I saw another user "Bob" created a program called idleshutdown.exe which does something similar. Not sure how his program gets around UAC.

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  • How can I restore the stored password in firefox 15.0.1 when deleted by error?

    - by Bob Legringe
    I, by error, deleted my stored passwords, using the "Wise disc cleaner 7" program. As I saw on another thread, the passwords are stored in 2 files signons.sqlite and the encryption key file key3.db When opening the file signons.sqlite with the text editor, I can see that the web adresses of the sites belonging to the passwords are still there. They have not been deleted by the "Wise disc cleaner 7" program, and adding a stored password on Firefox just modifies the file. However, Firefox will not display my old stored passwords and neither their respective sites. Is there any way to "undelete" the passwords?

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  • Resize windows command line prompt?

    - by Yuval
    I'm working on a Windows xp machine. I wrote a program in assembly that outputs some text, and am trying to create a screenshot of the command line output (start-run-"cmd"). The problem is that the text initially printed by the program gets pushed up by later text and I cannot scroll to it. I tried playing around with the width and height under properties = layout but it seems to resize the window itself (the borders) without resizing the textarea inside the window (text does not have more "room", but the window is bigger). Does anybody know a workaround/solution for this? Thank you!

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  • What is the best practice for reading a large number of custom settings from a text file?

    - by jawilmont
    So I have been looking through some code I wrote a few years ago for an economic simulation program. Each simulation has a large number of settings that can be saved to a file and later loaded back into the program to re-run the same/similar simulation. Some of the settings are optional or depend on what is being simulated. The code to read back the parameters is basically one very large switch statement (with a few nested switch statements). I was wondering if there is a better way to handle this situation. One line of the settings file might look like this: #RA:1,MT:DiscriminatoryPriceKDoubleAuction,OF:Demo Output.csv,QM:100,NT:5000,KP:0.5 //continues... And some of the code that would read that line: switch( Character.toUpperCase( s.charAt(0) ) ) { case 'R': randSeed = Integer.valueOf( s.substring(3).trim() ); break; case 'M': marketType = s.substring(3).trim(); System.err.println("MarketType: " + marketType); break; case 'O': outputFileName = s.substring(3).trim() ; break; case 'Q': quantityOfMarkets = Integer.valueOf( s.substring(3).trim() ); break; case 'N': maxTradesPerRound = Integer.valueOf( s.substring(3).trim() ); break; case 'K': kParameter = Float.valueOf( s.substring(3).trim() ); break; // continues... }

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  • C++ Parallel Asynchonous task

    - by Doodlemeat
    I am currently building a randomly generated terrain game where terrain is created automatically around the player. I am experiencing lag when the generated process is active, as I am running quite heavy tasks with post-processing and creating physics bodies. Then I came to mind using a parallel asynchronous task to do the post-processing for me. But I have no idea how I am going to do that. I have searched for C++ std::async but I believe that is not what I want. In the examples I found, a task returned something. I want the task to change objects in the main program. This is what I want: // Main program // Chunks that needs to be processed. // NOTE! These chunks are already generated, but need post-processing only! std::vector<Chunk*> unprocessedChunks; And then my task could look something like this, running like a loop constantly checking if there is chunks to process. // Asynced task if(unprocessedChunks.size() > 0) { processChunk(unprocessedChunks.pop()); } I know it's not far from easy as I wrote it, but it would be a huge help for me if you could push me at the right direction. In Java, I could type something like this: asynced_task = startAsyncTask(new PostProcessTask()); And that task would run until I do this: asynced_task.cancel();

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  • Spoof database connection to be local instead of remote

    - by spydon
    I am trying to connect one of our clients "as is" programs to a remote database instead of a local one, they say that they have coded it to be able to do it, but for some reason the program crashes when trying to connect to a remote database. I don't have the source code so I can't really dig much deeper than that and the company does not provide any upgrades or custom modifications. I can succesfully connect to the database through SqlDbx and HeidiSQL so I know that the server is set up correctly. This is why I need to find a way to spoof a remote connection on port 1433 to appear like a local database connection to the program. I thought about editing the hosts file, but it will most likely crash other programs if I bind localhost to another IP than 127.0.0.1. Any ideas?

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  • Optimal partition setup for Windows 7 on SSD

    - by Mike C.
    Hello, I'm setting up my system with Windows 7 right now, with knowledge that I am going to be getting a SSD in the future. What optimizations/setup should I do now to make a smoother transition in the future? Should I created two partitions - one for the OS and one for the data? Assuming this is the case, I would be able to easily ghost my OS partition onto the SSD in the future. If so, what should go on the OS drive besides the OS? Program files? If I install games or Visual Studio, should it go on the OS drive or the data drive? I can see the SSD filling up fast if I install all my program files on there. I've seen a few posts where people talk about leaving a portion of the SSD unformatted - is this something I should do? Thanks!

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  • Apache timeouts and error log

    - by BlackFire27
    I have an error whenever I run my code for a certain time. I use a lot of loops and sql connections. I basically, put and take out links from my database. The problem is that there is some error thrown that I cant see, whenever I execute a long sql operation .. Note that the fault isnt the code. The code runs well, whenever there are a few links involved. But when there are over 200 links.. an error is thrown that I cants see. I tried to trace the error in a few places: C:\Program Files\Zend\ZendServer\logs\php_error.log C:\Program Files\Zend\phpMyAdmin\config.inc.php Edit Viewer in win xp I am running XP: Windows xp php version: 5.3.9-ZS5.6.0. Apache/2.2.21 Apacher version: (Win32) mod_ssl/2.2.21 OpenSSL/0.9.8o I cant trace the error at all, and why it happens. All I can suspect of, is that there is a server timeout..

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  • Oracle Enterprise Manager 12c - New tools announced at OOW

    - by Cinzia Mascanzoni
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman";} Oracle announced enhanced tools and programs for Oracle Enterprise Manager 12c, including a new Enterprise Manager Extensibility Exchange, updated Oracle PartnerNetwork Enterprise Manager Knowledge Zone, and additional Enterprise Manager Extensibility Kit resources, enabling management of all software and hardware assets from a “single pane of glass,” to help partners accelerate their transformation to the public and private cloud.

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  • How to handle notifications to several partial views of the same model?

    - by Seki
    I am working on refactoring an old simulation of a Turing machine. The application uses a class that contains the state and the logic of program execution, and several panels to display the tape representation and show the state, messages, and the GUI controls (start, stop, program listing, ...). I would like to refactor it using the MVC architecture that was not used originaly: the Frame is the only way to get access to the different panels and there is also a strong coupling between the "engine" class and the GUI updates in the way of frame.displayPanel.state.setText("halted"); or frame.outputPanel.messages.append("some thing"); It looks to me that I should put the state related code into an observable model class and make the different panels observers. My problem is that the java Observable class only provides a global notification to the Observers, while I would prefer not to refresh every Observers everytime, but only when the part that specificaly observe has changed. I am thinking of implementing myself several vectors of listeners (for the state / position, for the output messages, ...) but I feel like reinventing the wheel. I though also about adding some flags that the observers could check like isNewMessageAvailable(), hasTapeMoved(), etc but it sounds also approximative design. BTW, is it ok to keep the fetch / execute loop into the model or should I move it in another place? We can think in a theorical ideal way as I am completely revamping this small application.

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