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  • php simplexmlelement - I can access most properties (except the one with a dash?)

    - by Matthew Steiner
    So I run some code like this: $quote = simplexml_load_string($xml); $quote = $quote->Stock; echo 'Name: '; echo $quote->Name; echo '<br>'; echo 'Sybmol: '; echo $quote->Symbol; echo '<br>'; echo 'Last Price: '; echo $quote->Last; echo '<br>'; echo 'Earnings To Price Ratio: '; echo $quote->P-E; echo '<br>'; I know that the second to last line ($quote-P-E) is incorrect - I don't think you can use dashes like that. But for some reason I can't figure out how to access that property. The weird thing is that's how it's written if I var_dump($quote) (It's towards the end): object(SimpleXMLElement)#17 (16) { ["Symbol"]=> string(4) "AAPL" ["Last"]=> string(6) "271.87" ["Date"]=> string(9) "6/17/2010" ["Time"]=> string(6) "3:59pm" ["Change"]=> string(5) "+4.62" ["Open"]=> string(6) "270.72" ["High"]=> string(6) "272.90" ["Low"]=> string(6) "269.50" ["Volume"]=> string(8) "31195032" ["MktCap"]=> string(6) "247.4B" ["PreviousClose"]=> string(6) "267.25" ["PercentageChange"]=> string(6) "+1.73%" ["AnnRange"]=> string(15) "132.88 - 272.90" ["Earns"]=> string(6) "11.796" ["P-E"]=> string(5) "22.66" ["Name"]=> string(10) "Apple Inc." } How should I be accessing this attribute/property?

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  • Is it bad practice to have state in a static class?

    - by Matthew
    I would like to do something like this: public class Foo { // Probably really a Guid, but I'm using a string here for simplicity's sake. string Id { get; set; } int Data { get; set; } public Foo (int data) { ... } ... } public static class FooManager { Dictionary<string, Foo> foos = new Dictionary<string, Foo> (); public static Foo Get (string id) { return foos [id]; } public static Foo Add (int data) { Foo foo = new Foo (data); foos.Add (foo.Id, foo); return foo; } public static bool Remove (string id) { return foos.Remove (id); } ... // Other members, perhaps events for when Foos are added or removed, etc. } This would allow me to manage the global collection of Foos from anywhere. However, I've been told that static classes should always be stateless--you shouldn't use them to store global data. Global data in general seems to be frowned upon. If I shouldn't use a static class, what is the right way to approach this problem? Note: I did find a similar question, but the answer given doesn't really apply in my case.

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  • Progress bar increment by 1 every 100th of second

    - by Matthew De'Loughry
    I'm trying to get a JProgressBar to increment by 1 every 100th of a second, and at the moment I'm using Thread.sleep(100) inside a while statement like so: try { while (i<=100){ doTime(); } } catch (InterruptedException ex) { Logger.getLogger(SplashScreen.class.getName()).log(Level.SEVERE, null, ex); } public void doTime() throws InterruptedException{ jLabel1.setText("sleeping"); Thread.sleep(100); jLabel1.setText("start"); i++; pb.setValue(i); pb.repaint(); } and If I debug by doing a System.out.println it displays in real time but the swing GUI freezes until it drops out of the while loop can anyone help? thanks matt

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  • NSPredicate cause update editing to return NSFetchedResultsChangeDelete not NSFetchedResultsChangeUp

    - by Matthew Weiss
    I have predicate inside of - (NSFetchedResultsController *)fetchedResultsController in a standard way starting from the CoreDataBook example. NSPredicate *predicate = [NSPredicate predicateWithFormat:@"state=%@ && date = %@ && date < %@", @"1",fromDate,toDate]; [fetchRequest setPredicate:predicate]; This works fine however when editing an item, it returns with NSFetchedResultsChangeDelete not Update. When the main view returns, it is missing the item. If I restart the simulator the delete was not saved and the correct editing result is shown the the predicate working correctly. case NSFetchedResultsChangeDelete: [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; break; I can confirm the behavior by commenting out the two predicate lines ONLY and then all works as it should correctly returning with the full set after editing and calling NSFetchedResultsChangeUpdate instead of NSFetchedResultsChangeDelete. I have read http://matteocaldari.it/2009/11/multiple-contexts-controllers-delegates-and-coredata-bug who reports similar behavior but I have not found a work around to my problem. I can

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  • php fopen function dies, though I have file permissions set to read and write

    - by Matthew Robert Keable
    I'm following a tutorial on php, and am having difficulty getting this to work. I set the appropriate directory permissions to read and write, but every time I run this, I get the die string. The code is: $ourFileName = "testFile.txt"; $ourFileHandle = fopen($ourFileName, 'w') or die("can't open file"); fclose($ourFileHandle); As far as my basic understanding goes, if "testFile.txt" does not exist, fopen should create that file (I have basic knowledge of Python, and remember this same principle in that language). But it...it doesn't. Even if I create the aforementioned file, and put it up, that line of code still returns a die string. My hosting account does not give me permission to execute. Is this a problem? My server runs on Windows. I am using Dreamweaver CS5, on OSX 10.5.8. I've done some searching on this, and see other people having similar issues - but none of them keyed to exactly my range of problems. Being that I'm a beginner, I feel that it might be something I'm overlooking. Thanks!!

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  • Passing Derived Class Instances as void* to Generic Callbacks in C++

    - by Matthew Iselin
    This is a bit of an involved problem, so I'll do the best I can to explain what's going on. If I miss something, please tell me so I can clarify. We have a callback system where on one side a module or application provides a "Service" and clients can perform actions with this Service (A very rudimentary IPC, basically). For future reference let's say we have some definitions like so: typedef int (*callback)(void*); // This is NOT in our code, but makes explaining easier. installCallback(string serviceName, callback cb); // Really handled by a proper management system sendMessage(string serviceName, void* arg); // arg = value to pass to callback This works fine for basic types such as structs or builtins. We have an MI structure a bit like this: Device <- Disk <- MyDiskProvider class Disk : public virtual Device class MyDiskProvider : public Disk The provider may be anything from a hardware driver to a bit of glue that handles disk images. The point is that classes inherit Disk. We have a "service" which is to be notified of all new Disks in the system, and this is where things unravel: void diskHandler(void *p) { Disk *pDisk = reinterpret_cast<Disk*>(p); // Uh oh! // Remainder is not important } SomeDiskProvider::initialise() { // Probe hardware, whatever... // Tell the disk system we're here! sendMessage("disk-handler", reinterpret_cast<void*>(this)); // Uh oh! } The problem is, SomeDiskProvider inherits Disk, but the callback handler can't receive that type (as the callback function pointer must be generic). Could RTTI and templates help here? Any suggestions would be greatly appreciated.

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  • In WebKitGtk+, how can I access parameters in an event listener?

    - by Matthew
    Here is an example in javascript of what I want to do: function handleDragStart(e) { e.dataTransfer.effectAllowed = 'move'; e.dataTransfer.setData('text/plain', 'some data'); } var dragSource = document.querySelector('#dragSource'); dragSource.addEventListener('dragstart', handleDragStart, false, null); But I am having trouble translating this to a GLib-based system. Here is an example in Vala: void on_dragstart(EventTarget event_target) { // How can I access the equivalent of e.dataTransfer? } WebKit.WebView web_view = ... WebKit.DOM.Document document = web_view.get_dom_document(); WebKit.DOM.Element drag_source = document.query_selector('#dragSource'); drag_source.add_event_listener("dragstart", (Callback) on_dragstart, false, null); While I am using Vala, an answer in any language interacting with WebKitGtk+ directly would be helpful.

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  • How to create and use resources in .NET

    - by Matthew Scharley
    How do I create a resource that I can reference and use in various parts of my program easily? My specific problem is that I have a NotifyIcon that I want to change the icon of depending on the state of the program. A common problem, but one I've been struggling with for a long time.

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  • Save HashMap data into SQLite

    - by Matthew
    I'm Trying to save data from Json into SQLite. For now I keep the data from Json into HashMap. I already search it, and there's said use the ContentValues. But I still don't get it how to use it. I try looking at this question save data to SQLite from json object using Hashmap in Android, but it doesn't help a lot. Is there any option that I can use to save the data from HashMap into SQLite? Here's My code. MainHellobali.java // Hashmap for ListView ArrayList<HashMap<String, String>> all_itemList; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_helloballi); all_itemList = new ArrayList<HashMap<String, String>>(); // Calling async task to get json new getAllItem().execute(); } private class getAllItem extends AsyncTask<Void, Void, Void> { @Override protected Void doInBackground(Void... arg0) { // Creating service handler class instance ServiceHandler sh = new ServiceHandler(); // Making a request to url and getting response String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET); Log.d("Response: ", "> " + jsonStr); if (jsonStr != null) { try { all_item = new JSONArray(jsonStr); // looping through All Contacts for (int i = 0; i < all_item.length(); i++) { JSONObject c = all_item.getJSONObject(i); String item_id = c.getString(TAG_ITEM_ID); String category_name = c.getString(TAG_CATEGORY_NAME); String item_name = c.getString(TAG_ITEM_NAME); // tmp hashmap for single contact HashMap<String, String> allItem = new HashMap<String, String>(); // adding each child node to HashMap key => value allItem.put(TAG_ITEM_ID, item_id); allItem.put(TAG_CATEGORY_NAME, category_name); allItem.put(TAG_ITEM_NAME, item_name); // adding contact to contact list all_itemList.add(allItem); } } catch (JSONException e) { e.printStackTrace(); } } else { Log.e("ServiceHandler", "Couldn't get any data from the url"); } return null; } } I have DatabasehHandler.java and AllItem.java too. I can put it in here if its necessary. Thanks before ** Add Edited Code ** // looping through All Contacts for (int i = 0; i < all_item.length(); i++) { JSONObject c = all_item.getJSONObject(i); String item_id = c.getString(TAG_ITEM_ID); String category_name = c.getString(TAG_CATEGORY_NAME); String item_name = c.getString(TAG_ITEM_NAME); DatabaseHandler databaseHandler = new DatabaseHandler(this); //error here "The Constructor DatabaseHandler(MainHellobali.getAllItem) is undefined }

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  • Safari's never-ending loading message when an iframe does not have a src

    - by Matthew Pennell
    I'm using @rem's jQuery :visited plugin to do something with visited links on a page. The plugin works by creating an invisible iframe, injecting the HTML source, and comparing the colour of links to see which have been visited. It works perfectly. The problem I have is that on Safari, the status bar message always hangs on "Loading (X-1) of X items" - i.e. it thinks there is still some resource still needing to be loaded. I've narrowed it down to this plugin, and the fact that it attaches the IFRAME element to the BODY before the src is set (or injected in this case). I've tried rearranging the code to set the src before the append happens, but that breaks the plugin's functionality. Anyone have any ideas how to fix this issue? It's not a major issue as the site still functions perfectly well, but it's an annoying glitch that could be confusing to users.

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  • Using generics in F# to create an EnumArray type

    - by Matthew
    I've created an F# class to represent an array that allocates one element for each value of a specific enum. I'm using an explicit constructor that creates a dictionary from enum values to array indices, and an Item property so that you can write expressions like: let my_array = new EnumArray<EnumType, int> my_array.[EnumType.enum_value] <- 5 However, I'm getting the following obscure compilation error at the line marked with '// FS0670' below. error FS0670: This code is not sufficiently generic. The type variable ^e when ^e : enum<int> and ^e : equality and ^e : (static member op_Explicit : ^e -> int) could not be generalized because it would escape its scope. I'm at a loss - can anyone explain this error? type EnumArray< 'e, 'v when 'e : enum<int> and 'e : equality and ^e : (static member op_Explicit : ^e -> int) > = val enum_to_int : Dictionary<'e, int> val a : 'v array new() as this = { enum_to_int = new Dictionary<'e, int>() a = Array.zeroCreate (Enum.GetValues(typeof<'e>).Length) } then for (e : obj) in Enum.GetValues(typeof<'e>) do this.enum_to_int.Add(e :?> 'e, int(e :?> 'e)) member this.Item with get (idx : 'e) : 'v = this.a.[this.enum_to_int.[idx]] // FS0670 and set (idx : 'e) (c : 'v) = this.a.[this.enum_to_int.[idx]] <- c

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  • Assigned numbers to movie clip to plug in formula... not working

    - by Matthew MlgPro Harding
    So I am attempting to vertically evenly space these movie clips so I came up with a math formula involving n( the button number) but Its not working. var buttonArray:Array = [ side_banner.btn1, side_banner.btn2, side_banner.btn3, side_banner.btn4]; var buttonCount:uint = buttonArray.length; for (var i:uint=0; i< buttonCount; i++) { buttonArray[i].addEventListener(MouseEvent.CLICK, outputNumber); buttonArray[i].theTrigger = [i + 1]; } function outputNumber(e:MouseEvent):void { trace( e.target.theTrigger); buttonArray[i].y = (((stage.stageHeight - 400)/4)*(e.target.theTrigger)) - ((stage.stageHeight - 400)/4)/2 } But apparently each movie clip doesn't actually have a numerical value just a numeric name... how can I get the "n" btn number to use my formula? Thanks

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  • Rotate MapView in Android

    - by Matthew B.
    I am writing an Android app where one of the features is that the map will rotate according to the compass (i.e. if the phone is pointing east, the map will be oriented so that the east side of the map is on top). Previous answers that I have found suggested over writing the onDraw() method in mapView, however, the api changed the method to final so it cannot be overwritten. As a result I have tried to overwrite the dispatchDraw() method like so: Note: -compass is a boolean that if true, rotate the view -bearing is a float variable that has the degrees that the view should rotate protected void dispatchDraw(Canvas canvas) { canvas.save(); if (compass) { final float w = this.getWidth(); final float h = this.getHeight(); final float scaleFactor = (float)(Math.sqrt(h * h + w * w) / Math.min(w, h)); final float centerX = w / 2.0f; final float centerY = h / 2.0f; canvas.rotate(bearing, centerX, centerY); canvas.scale(scaleFactor, scaleFactor, centerX, centerY); } super.dispatchDraw(canvas); canvas.restore(); }

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  • Is it worth the time to switch from AjaxControlToolkit to jQuery?

    - by Matthew Jones
    I keep hearing all these things about how awesome jQuery is and how the AjaxControlToolkit sucks. Unfortunately, I only heard about this after I built my entire WebForms site using the toolkit. Now I am considering switching, if not entirely, mostly to jQuery. This is partially for the experience (having never coded in Javascript or used any frameworks) and partially because I think I have more control over jQuery. There is no pressing need to switch, but I'm considering doing it anyway. Is it worth tackling the learning curve for jQuery just to get the experience, of should I leave my working site well enough alone?

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  • jquery simplemodal question (about window overflow)

    - by Matthew Steiner
    I noticed that if the height of the window is too small (meaning that the modal is taller than the window is), then even scrolling up or down won't reveal more of the modal, since it is constantly centering itself to the center of the window. Is there a good way of changing this? I have a tall modal that if someone's using a short monitor it may cause problems. Not to mention just general usability. I would guess that somewhere in the code you can test for if the window height is less than the modal to not worry about centering it vertically? Ideas?

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  • Detecting position with drag-and-drop and jQuery?

    - by Matthew Westrik
    Hi, I need to know how to detect the position of a dragged item as opposed to other divs. I need to detect whether an item is dropped outside of two different divs. (I am building a mac dock type start page and I need to know how to do this so I can delete icons by dragging them off the bar.) Any help would be greatly appreciated.

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  • Refactor custom wizard to reduce flicker

    - by Matthew Brown
    I have implemented a custom wizard control in C# windows forms by creating a base form which has the shared components and then making child forms for each step of the process. I then have a class which hides/shows the child forms when you move from one step to another. The problem is that flickering is bad when moving between forms. Does anyone know a way to either keep this method and reduce the flicker or refactor it to make it use a single form (which should definitely reduce the flicker)?

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  • Detect LaTeX class name

    - by Matthew Leingang
    I'm working on a LaTeX package which might need to do some things differently depending on the class that's being used. I'm wondering if there's a way to auto-detect or test the document class. One could certainly look up the class files and test for the existence of a specific macro defined by that class, but is there a smarter way? I looked at the definition of the \ProvidesClass macro and can't see if it saves the class name anywhere except \@currname. I believe \@currname is just the name of the current package or class being read. Basically I want to execute \author{\longauthorname} in the article class but \author[\shortauthorname]{\longauthorname} in the beamer class.

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