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• Tool for analyzing java core dump

  - by margus

  If i make java core dump with gcore then what is the best tool to analyze it? I need to be able make jmap, jstack, jstat etc and also i need to see values of all variables. Something that can take core dump as frozen JVM.

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• core data and paging

  - by Joo Park

  I have a database of 50,000 records. I'm using core data to fetch records from a search. A search could return 1000 records easily. What is needed to page through these records using core data and uitableview? I would like to show 100 records at a time and have 'load more' button after viewing 100 records.

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• SMTP service on Windows 2008 R2 Core [closed]

  - by Peter

  Hello, I have setup a server with Windows 2008 R2 Core Web Edition. The question is, how can I install the IIS7 SMTP service? Or is SMTP missing in the Core editions? Thank you

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• PRoblems Running Core Plot Tuorial

  - by Nick LaMarca

  I am following the tutorial here about core plot here.... http://www.switchonthecode.com/tutorials/using-core-plot-in-an-iphone-application I am getting errors with the following lines of code //SAYING INCOMPATIBLE TYPE FOR AURGUMENT 1 'setMajorIntervalLength' axisSet.xAxis.majorIntervalLength = [NSDecimalNumber decimalNumberWithString:@"5"]; // request for member 'axisLabelOffset' in something not a structure or union axisSet.xAxis.axisLabelOffset = 3.0f; //request for member 'bounds' in something not a structure or union CPScatterPlot *xSquaredPlot = [[[CPScatterPlot alloc] initWithFrame:graph.defaultPlotSpace.bounds] autorelease];

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• How to manually add Core Data to project?

  - by marko

  E.g. what "Use Core Data for storage" checkbox option means when creating new Window or Navigation based project? How to add Core Data for Tab Bar Application? How to initialize managedObjectModel, managedObjectContext, persistentStoreCoordinator?

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• Best ressources for learning Core Data?

  - by mystify

  I want to use Core Data on the iPhone. Do you know great tutorials, videos and ressources for learning Core Data in depth?

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• How does Core Data work

  - by Jason

  Ive tried to gather information on as to how core data works, but can someone give me a clear explanation of all the stuff required...For instance NSDataContext, Fetchcontroller, NSDataModel, Presistent... Perhaps all the steps involved to get a data...Now I'm also unclear about an SQLite file, like how do we load the data into the core data , once we have created our entities etc.. Thanks

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• Is the Core i5 Processor from Intel like the Celerons of yesteryear?

  - by Chris

  The title pretty much says it. I know that the Core i7's are Quad Core and Hyper-threaded (so 4 cores, and 8 logical), and the Core i5's are Quad Core as well but not Hyper-threaded, does this really make a difference? Or are the only people who are going to care are the ones who CPU intensive operations? I'm a developer, so I'm more concerned about hard drive speed most times than CPU speed. Any thoughts?

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• Using Clojure instead of Python for scalability (multi core) reasons, good idea?

  - by Vandell

  After reading http://clojure.org/rationale and other performance comparisons between Clojure and many languages, I started to think that apart from ease of use, I shouldn't be coding in Python anymore, but in Clojure instead. Actually, I began to fill irresponsisble for not learning clojure seeing it's benefits. Does it make sense? Can't I make really efficient use of all cores using a more imperative language like Python, than a lisp dialect or other functional language? It seems that all the benefits of it come from using immutable data, can't I do just that in Python and have all the benefits? I once started to learn some Common Lisp, read and done almost all exercices from a book I borrowod from my university library (I found it to be pretty good, despite it's low popularity on Amazon). But, after a while, I got myself struggling to much to do some simple things. I think there's somethings that are more imperative in their nature, that makes it difficult to model those thins in a functional way, I guess. The thing is, is Python as powerful as Clojure for building applications that takes advantages of this new multi core future? Note that I don't think that using semaphores, lock mechanisms or other similar concurrency mechanism are good alternatives to Clojure 'automatic' parallelization.

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• Removing and adding persistent stores to a core data application

  - by mkko

  I'm using core data on an iPhone application. I have multiple persisntent stores that I'm switching from one to another so that only one of the stores can be active at the time. I have one managed object context and the different persistent stores are similar in data format (sqlite) and share the same managed object model. I'm importing the data to each persistent store from a respective XML file. For the first import everything works fine, but after I remove the imported data (the persistent store and the physical file) and then re-import, core data gives me an error: *** Terminating app due to uncaught exception 'NSObjectInaccessibleException', reason: 'The NSManagedObject with ID:0x3c14e00 <x-coredata://6D14F11E-2EA7-4141-9BE8-53747DE6FCC6/Book/p2> has been invalidated.' This error comes from the save: of NSManagedObjectContext. Before re-importing, i'm removing the persistent store from the persistent store coordinator and removing the physical file, so everything should be as if re-importing was done for the first time. Alos, the objects in managed object context are removed and the context is sent the reset: message (I don't know if this is actually needed). Could some one help me out here? How should the persistent store be switched? I'm basically using the same logic as tutored here: http://blog.sallarp.com/iphone-core-data-uitableview-drill-down/ Thanks in advance.

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• Core Data 1-to-many relationship: List all related objects as section header in UITableView

  - by Snej

  Hi: I struggle with Core Data on the iPhone about the following: I have a 1-to-many relationship in Core Data. Assume the entities are called recipe and category. A category can have many recipes. I accomplished to get all recipes listed in a UITableView with section headers named after the category. What i want to achieve is to list all categories as section header, even those which have no recipe: category1 <--- this one should be displayed too category2 recipe_x recipe_y category3 recipe_z NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Recipe" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; [fetchRequest setFetchBatchSize:10]; NSSortDescriptor *sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:@"category.categoryName" ascending:YES]; NSSortDescriptor *sortDescriptor2 = [[NSSortDescriptor alloc] initWithKey:@"recipeName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor1,sortDescriptor2, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:@"category.categoryName" cacheName:@"Recipes"]; What is the most elegant way to achieve this with core data?

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• What changes in Core Data after a save?

  - by Splash6

  I have a Core Data based mac application that is working perfectly well until I save a file. When I save a file it seems like something changes in core data because my original fetch request no longer fetches anything. This is the fetch request that works before saving but returns an empty array after saving. NSEntityDescription *outputCellEntityDescription = [NSEntityDescription entityForName:@"OutputCell" inManagedObjectContext:[[self document] managedObjectContext]]; NSFetchRequest *outputCellRequest = [[[NSFetchRequest alloc] init] autorelease]; [outputCellRequest setEntity:outputCellEntityDescription]; NSPredicate *outputCellPredicate = [NSPredicate predicateWithFormat:@"(cellTitle = %@)", outputCellTitle]; [outputCellRequest setPredicate:outputCellPredicate]; NSError *outputCellError = nil; NSArray *outputCellArray = [[[self document] managedObjectContext] executeFetchRequest:outputCellRequest error:&outputCellError]; I have checked with [[[self document] managedObjectContext] registeredObjects] to see that the object still exists after the save and nothing seems to have changed and the object still exists. It is probably something fairly basic but does anyone know what I might be doing wrong? If not can anyone give me any pointers to what might be different in the Core Data model after a save so I might have some clues why the fetch request stops working after saving?

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• strange memory error when deleting object from Core Data

  - by llloydxmas

  I have an application that downloads an xml file, parses the file, and creates core data objects while doing so. In the parse code I have a function called 'emptydatacontext' that removes all items from Core Data before creating replacements from the xml file. This method looks like this: -(void) emptyDataContext { NSMutableArray* mutableFetchResults = [CoreDataHelper getObjectsFromContext:@"Condition" :@"road" :NO :managedObjectContext]; NSFetchRequest * allCon = [[NSFetchRequest alloc] init]; [allCon setEntity:[NSEntityDescription entityForName:@"Condition" inManagedObjectContext:managedObjectContext]]; NSError * error = nil; NSArray * conditions = [managedObjectContext executeFetchRequest:allCon error:&error]; [allCon release]; for (NSManagedObject * condition in conditions) { [managedObjectContext deleteObject:condition]; } } The first time this runs it deletes all objects and functions as it should - creating new objects from the xml file. I created a 'update' button that starts the exact same process of retrieving the file the preceeding as it did the first time. All is well until its time to delete the core data objects again. This 'deleteObject' call creates a "EXC_BAD_ACCESS" error each time. This only happens on the second time through. See this image for the debugger window as it appears when walking through the deletion FOR loop on the second iteration. Conditions is the fetched array of 7 objects with the objects below. Condition should be an individual condition. link text As you can see 'condition' does not match any of the objects in the 'conditions' array. I'm sure this is why I'm getting the memory access errors. Just not sure why this fetch (or the FOR) is returning a wrong reference. All the code that successfully performes this function on the first iteration is used in the second but with very different results. Thanks in advance for the help!

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• Save many-to-one relationship from JSON into Core Data

  - by Snow Crash

  I'm wanting to save a Many-to-one relationship parsed from JSON into Core Data. The code that parses the JSON and does the insert into Core Data looks like this: for (NSDictionary *thisRecipe in recipes) { Recipe *recipe = [NSEntityDescription insertNewObjectForEntityForName:@"Recipe" inManagedObjectContext:insertionContext]; recipe.title = [thisRecipe objectForKey:@"Title"]; NSDictionary *ingredientsForRecipe = [thisRecipe objectForKey:@"Ingredients"]; NSArray *ingredientsArray = [ingredientsForRecipe objectForKey:@"Results"]; for (NSDictionary *thisIngredient in ingredientsArray) { Ingredient *ingredient = [NSEntityDescription insertNewObjectForEntityForName:@"Ingredient" inManagedObjectContext:insertionContext]; ingredient.name = [thisIngredient objectForKey:@"Name"]; } } NSSet *ingredientsSet = [NSSet ingredientsArray]; [recipe setIngredients:ingredientsSet]; Notes: "setIngredients" is a Core Data generated accessor method. There is a many-to-one relationship between Ingredients and Recipe However, when I run this I get the following error: NSCFDictionary managedObjectContext]: unrecognized selector sent to instance If I remove the last line (i.e. [recipe setIngredients:ingredientsSet];) then, taking a peek at the SQLite database, I see the Recipe and Ingredients have been stored but no relationship has been created between Recipe and Ingredients Any suggestions as to how to ensure the relationship is stored correctly?

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• Starting an animation from the ViewModel in WPF/MVVM

  - by RandomEngy

  I'm writing a MVVM app and have started putting in a few animations. I want to call something on the ViewModel which starts the a storyboard. This blog had a promising approach to it, but it doesn't actually work. The IDChanged handler never fires for some reason. I also found that you could start animations on EventTriggers, but I don't know how to raise one on the ViewModel.

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• Android -- Change the AlertDialog Animation?

  - by borg17of20

  Hello all, Does anyone know how to change the in/out animations of an extended AlertDialog? I connot figure out how to do this. See below for what I have so far (it doesn't work though): public class PauseMenu extends AlertDialog { private Context myContext; public PauseMenu(Context context, int theme) { super(context, theme); myContext = context; } protected PauseMenu(Context context, boolean cancelable, OnCancelListener cancelListener) { super(context, cancelable, cancelListener); myContext = context; } public PauseMenu(Context context) { super(context); myContext = context; } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub //super.onCreate(savedInstanceState); this.setContentView(R.layout.pause_menu); //this.getWindow().getDecorView().setAnimation(new ViewZoomAnimation()); this.getWindow().getDecorView().setAnimation(AnimationUtils.loadAnimation(myContext, R.anim.slide_in_bottom_newgame)); } } Thanks.

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• Android ViewFlipper + homescreen animation

  - by Tim

  I am trying to use a ViewFlipper and make it act like the home screen(The layout will move with your finger). Check out this for an example. I want to do this with a ViewFlipper that only contains two children so the opposite view should be shown on either side of the current view depending on which way the user moves their finger. This code works but only for 1 direction at a time. This is in onTouchEvent. case MotionEvent.ACTION_MOVE: leftView.setVisibility(View.VISIBLE); rightView.setVisibility(View.VISIBLE); // move the current view to the left or right. currentView.layout((int) (touchEvent.getX() - oldTouchValue), currentView.getTop(), (int) (touchEvent.getX() - oldTouchValue) + 320, currentView.getBottom()); // place this view just left of the currentView leftView.layout(currentView.getLeft() - 320, leftView.getTop(), currentView.getLeft(), leftView.getBottom()); // place this view just right of the currentView rightView.layout(currentView.getRight(), rightView.getTop(), currentView.getRight() + 320, rightView.getBottom()); Which ever of the bottom two lines I put last that direction will work correctly but the other will not. Here is how I set the leftView and rightView: final View currentView = myFlipper.getCurrentView(); final View leftView, rightView; if (currentView == meView) { Log.d("current layout: ", "me"); leftView = youView; rightView = youView; } else if (currentView == youView) { Log.d("current layout: ", "you"); leftView = meView; rightView = meView; }else { leftView = null; rightView = null; } Is it going to be possible to set it up so that the same view is shown on both sides of the current view?

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• Smoothing touch-based animation in iPhone OpenGL?

  - by quixoto

  I know this is vague, but looking for general tips/help on this, as it's not an area of significant expertise for me. I have some iPhone code that's basically an EAGL view handling a single touch. The app draws (using GL) a circle via triangle fan at the touch point, and moves it when the user moves the touch point, and re-renders the view then. When dragging a finger slowly, the circle keeps up and consistent with the finger as it moves. If I scribble my finger quickly back and forth across the screen, the rendering doesn't keep up with the touch motion, so you see an optical illusion of "multiple" discrete circles on the screen "at once". (Normal persistence of vision illusion). This optical illusion is jarring. How can I make this look more natural? Can I blur the motion of the circle somehow? Is this result the evidence of some bad frame rate issue? I see this artifact even when nothing else is being rendered, so I think this might just be as fast as we can go. Any hints or suggestions? Much appreciated. Thanks.

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• Core Animation not working on Leopard, working on Snow Leopard

  - by Nick Paulson

  Hi, I animate NSImageViews using its animator proxy. While testing my application on Snow Leopard, everything works as expected. However, on Leopard, none of the animations are functioning. In addition, NSImageViews don't seem to take into effect the alphaValue I set on them, whether through the animator proxy or not. The only way I can get them to disappear is by setting their image to nil. What is weird is that this all works fine in Snow Leopard, but does not work on Leopard 10.5.8. Any idea on why this may be occurring?

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• Slide expand animation in android.

  - by Priyank

  Hi, I have a simple list view listing results in android. Upon click of each item, I would like it to slide down expand and show the content. Is there an easy way to do this in android? Any help will be appreciated. Cheers

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• jQuery animation works in IE8, not in Firefox or Webkit

  - by Don

  My CSS: #content { border: 2px solid #4190d4; padding: 220px; background-color: #282828; margin-top: 65px; -moz-border-radius: 8px; -webkit-border-radius: 8px; } My jQuery: $("#header a").click(function() { $('#content').animate({padding: 300}, 500); } This code works perfectly fine in IE8, my #content div grows from 220px to 300px. In Firefox or Webkit-based browsers, though, my #content div first shrinks to 0px and then resizes to 300px. I'm using jQuery 1.4.2, Firefox 3.6 and Chrome 4.0.249.89. Any ideas?

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• iPhone UIView frame animation inconsistent why?

  - by Rick

  I have an app that uses an image loaded in from an UIImagePickerController instance. Once the picker is dismissed so as to reduce the jarring transition from the picker layout to the layout of the next function I initially have the UIImageView for the image fill the whole screen and then when the picker is dismissed the image 'squeezes' up to the top left of the screen. from the initWithFrame... targetPicView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; [targetPicView setContentMode:UIViewContentModeScaleToFill]; this in a function called after dismissing the picker... [UIView beginAnimations:@"squeeze" context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.75]; [targetPicView setFrame:CGRectMake(20.0, 20.0, 130.0, 150.0)]; [UIView commitAnimations]; The weird thing is that this works great when the image has been chosen from the library, the view shrinks down with the top left corner in place just as I planned but... If the image comes from the camera then the view shrinks with the top right corner in place instead and appears to come in from the left side of the screen. Can anyone shed any light on this?

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• UIView "suck" animation

  - by igul222

  I'd like to use the UIView "sucking" transition (view is "sucked" into a point) referenced here: http://iphonedevwiki.net/index.php/UIViewAnimationState#Using_suckEffect The method above, however, uses private APIs, which makes it next to useless for an App Store app. How can I recreate a similar effect without relying on private APIs? I'm guessing the answer has to do with OpenGL, although I have zero experience there.

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• UIView Animation: Shrink

  - by Moduspwnens

  I'm looking to have my main view shrink to reveal the next view in the same way the Facebook app's views shrink when you press the top-left button. I already have it working with one of the included animations like this: [UIView beginAnimations:nil context:nil]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:1.0]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.navigationController.view cache:NO]; [self.navigationController popToRootViewControllerAnimated:YES]; [UIView commitAnimations]; I'm fairly well-experienced with the iPhone SDK but haven't spent a lot of time with UIView animations.

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• Python Animation Timing

  - by M3RPHY

  I'm currently working on sprite sheet tool in python that exports the organization into an xml document but I've run into some problems trying to animate a preview. I'm not quite sure how to time the frame rate with python. For example, assuming I have all of my appropriate frame data and drawing functions, how would I go about coding the timing to display it at 30 frames per second (or any other arbitrary rate).

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