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• Are there any FreeRTOS interpreted language libraries available?

  - by Great Turtle

  I work for a company that created firmware for several device using FreeRTOS. Lately our request for new features has surpassed how much work our firmware engineers are capable of, but we can't afford to hire anyone new right now either. Making even tiny changes requires firmware people to go in and modify things at a very low level. I've been looking for some sort of interpreted language project for FreeRTOS that would let us implement new features at a higher level. Ideally I would like to get things eventually so the devices become closer to generic computers with us writing drivers, rather than us having to implement every feature ourselves. Are there any FreeRTOS projects that interpret java, python or similar bytecode? I've looked on google, but since I'm not a firmware engineer myself I'm not sure if I'm looking for the right keywords. Thanks everyone

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• VBA: Read file from clipboard

  - by ReturningTarzan

  I'm trying to load a file in a VBA macro that has been copied from, say, an Explorer window. I can easily get the data from the clipboard using DataObject::GetFromClipboard, but the VBA interface to DataObject doesn't seem to have methods for working with any other formats than plain text. There are only GetText and SetText methods. If I can't get a file stream directly from the DataObject, the filename(s) would also do, so maybe GetText could be forced to return the name of a file placed on the clipboard? There is very little documentation to be found for VBA anywhere. :( Maybe someone could point me to an API wrapper class for VBA that has this sort of functionality?

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• Global "ajax call" notification with asp.net mvc/jquery

  - by Joel Martinez

  I need to be notified any time a largeish asp.net mvc web application makes an ajax call to the server. We're using both jquery, and the built-in Ajax.* methods to do the remote calls, and I would like a global way of knowing when we make a call without having to manually inject some sort of "IsMakingCall" method to every request. The root problem we're trying to solve is session timeout. If the user leaves a page up and goes to lunch (for example), they get errors when they get back because the ajax call is returning the login page instead of the expected json or partial html result. My idea was to have a js timer which would be reset any time we make an ajax call. That way, if the timer runs out (ie. their session has now timed out) I can just auto-log them out. This is how sites like bank of america and mint.com work. Thanks!

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• Ranking based string matching algorithm..for Midi Music

  - by Taha

  i am working on midi music project. What i am trying to do is:- matching the Instrument midi track with the similar instrument midi track... for example Flute track in a some midi music is matched against the Flute track in some other music midi file... After matching ,the results should come ranking wise according to their similarity.. Like 1) track1 2) track2 3) track3 I have this sort of string coming from my midi music .. F4/0.01282051282051282E4/0.01282051282051282Eb4/0.01282051282051282 D4/0.01282051282051282C#4/0.01282051282051282C4/0.01282051282051282 Which ranking algorithm with good metrics should i use for such data ? Thanking you in anticipation!

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• Why is invalid value being thrown?

  - by Nathan Koop

  I've got a DevExpress TextEdit which is databound to a dataset. The field is an optional percentage, (datatype double). When the record gets loaded and there is no value in the field, everything is fine. However, if you type something into the field (IE 100) and then want to remove it afterwards, I get an Invalid Value, error. Why does this occur, and how can I remove it? I do not have any mask or any sort of explicit validation on this field.

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• Spring MVC Web PetClinic Tutorial?

  - by wuntee

  Is there a tutorial that goes along with the PetClinic application? I have been trying to find one, but google is not helping me today. Specifically, I dont understand things like: @Autowired - what does that even mean? @RequestMapping(method = RequestMethod.GET) public String setupForm(@RequestParam("petId") int petId, ModelMap model) { Pet pet = this.clinic.loadPet(petId); model.addAttribute("pet", pet); return "petForm"; } How can a request return just a string? Shouldnt it need to return some sort of ModelAndView? Or does the application somehow redirect to whatever is returned? A lot of confusing concepts - if there is a tutorial, or video (like spring-security has) that would be very helpful. Thanks.

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• MapViewOfFile shared between 32bit and 64bit processes

  - by MK

  Hi, I'm trying to use MapViewOfFile in a 64 bit process on a file that is already mapped to memory of another 32 bit process. It fails and gives me an "access denied" error. Is this a known Windows limitation or am I doing something wrong? Same code works fine with 2 32bit processes. The code sort of looks like this: hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, szShmName); if (NULL == hMapFile) { /* failed to open - create new (this happens in the 32 bit app) */ SECURITY_ATTRIBUTES sa; sa.nLength = sizeof(SECURITY_ATTRIBUTES); sa.bInheritHandle = FALSE; /* give access to members of administrators group */ BOOL success = ConvertStringSecurityDescriptorToSecurityDescriptor( "D:(A;OICI;GA;;;BA)", SDDL_REVISION_1, &(sa.lpSecurityDescriptor), NULL); HANDLE hShmFile = CreateFile(FILE_FAXCOM_SHM, FILE_ALL_ACCESS, 0, &sa, OPEN_ALWAYS, 0, NULL); hMapFile = CreateFileMapping(hShmFile, &sa, PAGE_READWRITE, 0, SHM_SIZE, szShmName); CloseHandle(hShmFile); } // this one fails in 64 bit app pShm = MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, SHM_SIZE);

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• dll woes c# noob

  - by Chin

  Hi, I'm a bit of a visual studio noob. I have just restarted a project in which I am using NHibernate. The project worked fine last time I used it but now is giving the following error. System.IO.FileLoadException: Could not load file or assembly 'Iesi.Collections, Version=1.0.0.3, Culture=neutral, PublicKeyToken=aa95f207798dfdb4' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at NHibernate.Cfg.Configuration.Reset() at NHibernate.Cfg.Configuration..ctor(SettingsFactory settingsFactory) at NHibernate.Cfg.Configuration..ctor() at Luther.Dao.Repositories.Session.NHibernateHelper..cctor() in NHibernateHelper.cs: line 18 I notice the current reference to the iesi dll ia at 1.0.1.0. What is the best way to get this up and running again? Try and find the appropriate version of the dll or sort out the manifest file? Any pointers much appreciated.

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• What is your contribution to open source projects?

  - by Yuval A

  I was always wondering about this seemingly utopic world of open source. Assuming the vast majority of users here are professional software engineers which need some sort of income source, I assume most of us hold stable, money-making jobs. So who are the key players in the open source community? Who are the people which devote their precious time to these projects? What is their benefit? Are the majority just people who see a bug, fix it, submit, and forget about the project? Or are they people constantly involved in the process of building the product? How do you find yourself contributing to open source projects?

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• Installing a COM object without privileged access for use in Microsoft Office

  - by bmargulies

  Start with a series of MS Office extensions built in C++ as COM objects. Add a user who really badly wants to avoid the requirement of an installer with the necessary privileges to write to HKEY_CLASSES_ROOT. I've seem bits of evidence that MS has created some sort of trick for shadowing HKEY_CLASSES_ROOT from HKCU. Is this, in fact, possible? If so, can this be installed as a non-privileged MSI, or does it have to be arranged otherwise? And, finally, what's the minimum version of Windows required?

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• Will OpenGL give me any FPS improvement over CoreAnimation for scrolling a large image?

  - by Ben Roberts

  Hi, I'm considering re-writing the menu system of my iPhone app to use Open GL just to improve the smoothness of scrolling a big image (480x1900px) across the screen. I'm looking at doing this as a way to improve on using the method/solution as described here (http://stackoverflow.com/questions/1443140/smoother-uiview). This solution was a big improvement over the previous implementation but it's still not perfect and as this is the first thing the user will see I'd like it to be as flawless as possible. Will switching to OpenGL give me the sort of smooth scrolling I'm looking for? I've stayed clear of OpenGL until now as this is my first app and core animation has handled everything else I've thrown at it well enough, would be good to know if this alternative implementation is likely to work! thanks

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• Is it a Good Practice to Write HTML Using a StringBuilder in my ASP.NET Codebehind?

  - by d3020

  I'm interested to hear from other developers their opinion on an approach that I typically take. I have a web application, asp.net 2.0, c#. What I usually do to write out drop downs, tables, input controls, etc. is in the code behind use StringBuilder and write out something like sb.Append(" I don't find myself using to many .net controls as I typically write out the html in the code behind. When I want to use jQuery or call JavaScript I just put that function call in my sb.Append tag like sb.Append("td...onblur='fnCallJS()'. I've gotten pretty comfortable with this approach. For data access I use EntitySpaces. I'm just kind of curious if this sort of approach is horribly wrong, ok depending on the context, good, time to learn 3.0, etc. I'm interested in learning and was just looking for some input.

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• How to callback the new list id jQuery UI: sortable

  - by PARyGuy

  Hi, I'm trying to use the sortable widget for my site. I have a mini scheduling app that I'd like to display a list of appointments for the week sorted by days. For this example we'll use only two days ( 2 lists ). If I wanted to drag an appointment (list item) from day 2 over to day 1, is there a way I can callback the id of list 1 after I dragged an item to it? I can find the id of the parent list upon page load but I can't seem to be able to pull the new id after sort. Is this even possible? <script type="text/javascript"> $(function() { $("#day1, #day2").sortable({ connectWith: '.sortable' }).disableSelection(); }); </script>

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• SublimeJava won't react at all on Mac OS X 10.7

  - by David Merz

  today I tried to install and run the SublimeJava Plugin for Sublime Text 2. Here is basically what i've done. Cloning the git Repository https://github.com/quarnster/SublimeJava.git into ~/Library/Application Support/Sublime Text 2/Packages. Created a ProjectFile to test the Plugin. { "folders": [ { // The class files are in the same directory "path": "~/src/path_to_project/" } ], "settings": [ { "sublimejava_classpath": [ "~/src/path_to_project/", "/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries/" ], "sublimejava_enabled":true } ] } Now whenever I type something that should trigger the code-completion, nothing happens. I hope you guys can sort me out here, many thanks in advance!!

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• Is "map" a loop?

  - by DVK

  While answering this question, I came to realize that I was not sure whether Perl's map can be considered a loop or not? On one hand, it quacks/walks like a loop (does O(n) work, can be easily re-written by an equivalent loop, and sort of fits the common definition = "a sequence of instructions that is continually repeated"). On the other hand, map is not usually listed among Perl's control structures, of which loops are a subset of. E.g. http://en.wikipedia.org/wiki/Perl_control_structures#Loops So, what i'm looking for is a formal reason to be convinced of one side vs. the other. So far, the former (it is a loop) sounds a lot more convincing to me, but I'm bothered by the fact that I never saw "map" mentioned in a list of Perl loops.

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• Identify which AlertDialog triggered onClick(DialogInterface dialog, int which)

  - by Kurian

  I'm creating a dialog as follows: @Override protected Dialog onCreateDialog(int id) { switch (id) { case DIALOG_1: return new AlertDialog.Builder(this) .setTitle(R.string.s_dlg1) .setPositiveButton(android.R.string.ok, this) .create(); case DIALOG_2: ... ... } return null; } @Override public void onClick(DialogInterface dialog, int whichButton) { if (dialog == ???) { ... } else if (dialog == ???){ ... } } How do I identify which dialog triggered the onClick method? I can't declare the interface methods as in-line when creating the dialog because I want to access variables in my class. Every other interface passes some sort of id to its methods to identify which object called the method, but I can't seem to do anything with 'DialogInterface dialog'.

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• Silverlight running in IE kiosk mode

  - by JimmySavile

  Hi, We are having a weird problem where by we are running a silveright application in IE8 kiosk mode, the shortcut is added to windows startup. The silverlight app runs on localhost. It all works fine until you reboot, IE displays "navigation to the webpage was canceled" when it loads. Yet the shortcut works fine, if you close IE and manually go into the startup folder and run the shortcut, or run the same shortcut from the desktop. I assume there is some sort of timing issue but have no idea what. Tried using 127.0.0.1 instead of localhost incase DNS hadn't been properly initialised at that point or something. Maybe an IIS initialisation problem? Anyone have any ideas? Thanks for your time

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• SQL Query problem: How to merge two lists.

  - by ProfK

  I have a base table of Participants and Answers, with the following structure: ParticipantId, BusUnitId, QuestionNum, Answer. In this table, QuestionNum ranges, say, from 1 to 6. I also have two other tables that sort of link QuestionNum to the actual question table, BusUnitQuestions, and ParticipantQuestions. For each QuestionNum, I must get the actual question text, based on QuestionId. BusUnitId, QuestionId ParticipantId, QuestionId Now assuming records with QuestionNum from 1 to 6. BusUnitQuestions has 3 records, so QuestionNum 1 to 3 must join to Question on the QuestionId's from BusUnitQuestions, and QuestionNum 4 to 6 must join to Question on the QuestionId's from ParticipantQuestions. I assume I need to use ROW_NUMBER() in the subquery from BusUnitQuestions to join to my answer table, but I'm lost after that. If anyone at all understands me, do you have any suggestions?

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• shouldAutorotateToInterfaceOrientation isn't getting called

  - by morgancodes

  What sort of conditions might prevent my UIViewController's shouldAutorotateToInterfaceOrientation method from being called? I've resorted to using NSNotificationCenter to listen for UIDeviceOrientationDidChangeNotification events, but would love to get the autoRotation behavior working properly. A couple shots in the dark about what's going wrong: Maybe I'm not creating my view controller correctly? Maybe it needs to be inserted in the responder chain and somthething I'm doing is preventing that from happening normally? This seems unlikely to me since my view controller is recieving touch events. Maybe the fact that the view contained by my controller relies on OpenGL has something to do with shouldAutorotateToInterfaceOrientation not getting called? Do either of these sound remotely possible as being responsible? Any other ideas of things to look at?

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• Diff tool to align shuffled lines

  - by Ken Bloom

  Suppose I have two documents that are identical except the lines are shuffled. Is there a tool that can show me which lines in document A correspond to which lines on document B by drawing lines to connect them (kinda like Cairo does for machine translation word alignments)? What if the files have some level of differing lines (I don't want to figure out which lines are similar to each other -- if there isn't an exact match for a line, then that line has no match.) Note: I am not looking to sort the files and compare them, rather I am looking to get a visualization of how far out of order the files are relative to each other, and which particular regions tend to move together, and which tend to be shuffled.

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• The subscription model behind CSS selectors?

  - by Martin Kristiansen

  With CSS selectors a query string body > h1.span subscribes to a specific type of nodes in the tree. Does anyone know how this is done? Selectors for transformations, how does the browser select the result set? And is there a trick to making it efficient? I imagine there being some sort of hierarchical type-tree for the entire structure to which the nodes subscribe and which is what is used when doing the selector queries — but this is only a guess. Does anyone know the real answer? Or even more interesting, what would be the best way to do dynamic lookups on a tree based on jQuery/CSS search queries?

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• Django South Foreign Keys referring to pks with Custom Fields

  - by Rory Hart

  I'm working with a legacy database which uses the MySQL big int so I setup a simple custom model field to handle this: class BigAutoField(models.AutoField): def get_internal_type(self): return "BigAutoField" def db_type(self): return 'bigint AUTO_INCREMENT' # Note this won't work with Oracle. This works fine with django south for the id/pk fields (mysql desc "| id | bigint(20) | NO | PRI | NULL | auto_increment |") but the ForeignKey fields in other models the referring fields are created as int(11) rather than bigint(20). I assume I have to add an introspection rule to the BigAutoField but there doesn't seem to be a mention of this sort of rule in the documentation (http://south.aeracode.org/docs/customfields.html). Update: Currently using Django 1.1.1 and South 0.6.2

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• C#, Linq, Dynamic Query: Code to filter a Dynamic query outside of the Repository

  - by Dr. Zim

  If you do something like this in your Repository: IQueryable<CarClass> GetCars(string condition, params object[] values) { return db.Cars.Where(condition, values); } And you set the condition and values outside of the repository: string condition = "CarMake == @Make"; object[] values = new string[] { Make = "Ford" }; var result = myRepo.GetCars( condition, values); How would you be able to sort the result outside of the repository with Dynamic Query? return View( "myView", result.OrderBy("Price")); Somehow I am losing the DynamicQuery nature when the data exits from the repository. And yes, I haven't worked out how to return the CarClass type where you would normally do a Select new Carclass { fieldName = m.fieldName, ... }

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• Legacy application with JDBC and JNDI REALM authentication

  - by KB

  Hello All, My application currently relies on JDBC realm authentication. Recent needs have forced us to think about having LDAP authentication as well. We are thinking about using Active Directory for both authentication as well as authorization (roles). As a standalone test, I was able to authenticate my application with AD. But here is the confusion I have going forward. If the user chooses LDAP authentication when he logs in, I authenticate the user with AD, get the user's roles and do I replicate(create a new) windows user in my database?. I have to have the user in the database, because many parts of the application is designed to retrieve the user from database If the users chooses local login, I still should have JDBCRealm somewhere that I should use to authenticate the user. Is it possible to have multiple realms in tomcat? (I sort of know it is possible, but havent seen much documentation around it) Any thoughts, comments, suggestions would immensely help me Thanks K

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• Prototyping Object in Javascript breaks jQuery?

  - by blesh

  I have added a simple .js to my page that has some pretty mundane common-task sort of functions added to the Object and Array prototypes. Through trial and error I've figured out that adding any function to Object.prototype, no matter it's name or what it does causes javascript errors in jQuery: The culprit? Object.prototype.foo = function() { /*do nothing and break jQuery*/ }; The error I'm getting line 1056 of jquery-1.3.2.js, in the attr:function { } declaration: /*Object doesn't support this property or method*/ name = name.replace(/-([a-z])/ig, function(all, letter) { return letter.toUpperCase(); }); Apparently G.replace is undefined. While it's obvious that there's something I'm just not wrapping my head around with prototyping, I'm failing miserably to figure out what it is. To be clear, I'm not looking for a workaround, I have that handled... what I'm looking for is an answer to 'Why?'. Why does adding a function to Object.prototype break this bit of code?

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