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• Priority queue with dynamic item priorities.

  - by sean

  I need to implement a priority queue where the priority of an item in the queue can change and the queue adjusts itself so that items are always removed in the correct order. I have some ideas of how I could implement this but I'm sure this is quite a common data structure so I'm hoping I can use an implementation by someone smarter than me as a base. Can anyone tell me the name of this type of priority queue so I know what to search for or, even better, point me to an implementation?

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• Design Pattern for "Context Sensitive" Right Click Menu

  - by MadSeb

  Hi, What is a design pattern I can use for generating "context-sensitive" right click menus ? I have in mind a "Windows Explorer"-like application where a user can right click on a folder and get a list of menu items but right click on a drive and get a totally different list. What design pattern should I use ? Would the factory design pattern be appropiate for handling such a menu ? Regards, Seb

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• List comprehension for series of deltas

  - by Yuval A

  How would you write a list comprehension in python to generate a series of n-1 deltas between n items in an ordered list? Example: L = [5,9,2,1,7] RES = [5-9,9-2,2-1,1-7] = [4,7,1,6] # absolute values

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• How to Update TreeViewItem's IsExpanded property to false in code behind?

  - by viky

  I am working with WPF TreeView control. I am creating a hierarchical data structure and assigning it to ItemsSource and it will generate TreeviewItems automatically. By default I use IsExpanded of TreeViewItem to true. But in a particular case, I want to set IsExpanded property to false. So that treeview loading doesn't take time to generate all items. How can I set that in code since I don't have reference to TreeViewItem's instance at that time?

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• checked list box

  - by Xaver

  i want to do some actions when all items in checked list box are unchecked. There is only event ItemCheck but the check state is not updated until after the ItemCheck event occurs.

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• Discarding several log levels within a range with log4net

  - by Harel Moshe

  Hey, Say i set my log4net logger's minLevel and maxLevel to FATAL and DEBUG respectively, but under some scenario i want to mute the log-items written in the WARN level, and keep all the other levels in the range active. Is it possible to somehow use 'discrete' levels of log-levels rather than specifying a range using minLevel and maxLevel? I assume this should be simple, but i haven't found any log4net docs or examples dealing with this issue. Regards, Harel

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• jQuery sortable: Revert changes if update callback makes an AJAX call that fails?

  - by Seth Petry-Johnson

  I am using the jQuery sortable() feature to re-order a list of items. After an item is drug to a new location, I kick off an AJAX form post to the server to save the new order. How can I undo the sort (e.g. return the drug item to its original position in the list) if I receive an error message from the server? Basically, I only want the re-order to "stick" if the server confirms that the changes were saved.

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• Is ArrayList.size() method cached?

  - by Peterdk

  I was wondering, is the size() method that you can call on a existing ArrayList<T> cached? Or is it preferable in performance critical code that I just store the size() in a local int? I would expect that it is indeed cached, when you don't add/remove items between calls to size(). Am I right?

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• Jquery: Filter dropdown list as you type

  - by rmbarnes

  I have used a prototype plugin which filters the contents of a dropdown as you type. So for example if you typed 'cat' into the text box, only items containing the substring 'cat' would be left as options in the drop down. Does anyone know of a jquery plugin which can do this?

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• How to disable customization for the TabBar?

  - by mana

  Hey, within my App it should be forbidden to edit (customize) the TabBar. This means there should be no edit button and no other possibility to change the order of the items. (this is not my decision, the boss wants it that way :) ) I can't find a property to do this - so is this possible after all? cheers

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• Highlight certain choices in a combo box

  - by calico-cat

  I've got a dropdown box with some items in it that are more popular than others, and I'd like those to have a different background colour (say, Color.AliceBlue) when the combobox is expanded. I see BackColor but is there a way to apply background colour to just a single item?

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• Issue with Column footer and Summary bands on Jasper reports

  - by lakshmi

  I am creating invoices with Jasper reports. I have a detail section that has the list of all items followed by a column footer which has Totals, Tax etc., and then the return policy in the Summary section. I want to always ensure that the detail is followed by column footer followed by summary bands. How can we ensure this? I found that sometimes the Summary comes before the Column footer. Can someone throw some light on this? Thanks, Lakshmi

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• How can I create an Outlook PST file using .Net?

  - by brendan

  I'm writing an app that will manipulate Outlook data. I want to make a backup of that data first and am hoping I could just loop through the contact/calendar items, etc and write them out to a PST file. How can I write the contents of 1 or several Outlook folders to a PST using .Net? [vb or c# no matter]

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• Align text box with menu control using boostrap

  - by JamesMitLondon

  Hi I am using bootstrap styles for my asp.net web application and I have a menu control at the top. I want to insert a search text box at the top right on the same line as the menu bar. Following is my code. Can anyone please suggest how to do this? Thanks. <div id="container"> <form runat="server" class="navbar-form navbar-left" role="search"> <div class = "navbar"> <div class="navbar-inner"> <div class="container"> <!-- .btn-navbar is used as the toggle for collapsed navbar content --> <a class="btn btn-navbar" data-target=".nav-collapse" data-toggle="collapse"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </a> <div class="nav-collapse collapse"> <asp:Menu ID="NavigationMenu" runat="server" EnableViewState="false" IncludeStyleBlock="false" Orientation="Horizontal" CssClass="navbar" StaticMenuStyle-CssClass="nav" StaticSelectedStyle-CssClass="active" DynamicMenuStyle-CssClass="dropdown-menu"> <Items> <asp:MenuItem Text="Home" ToolTip="Home"></asp:MenuItem> <asp:MenuItem Text="Music" ToolTip="Music"> <asp:MenuItem Text="Classical" ToolTip="Classical" /> <asp:MenuItem Text="Rock" ToolTip="Rock" /> <asp:MenuItem Text="Jazz" ToolTip="Jazz" /> </asp:MenuItem> <asp:MenuItem Text="Movies" ToolTip="Movies"> <asp:MenuItem Text="Action" ToolTip="Action" /> <asp:MenuItem Text="Drama" ToolTip="Drama" /> <asp:MenuItem Text="Musical" ToolTip="Musical" /> </asp:MenuItem> </Items> </asp:Menu> <div class="form-group"> <input type="text" class="form-control" placeholder="Search"/> <button type="submit" class="btn btn-default">Submit</button> </div> </div> </div> </div> </div> </form> </div> `

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• JQuery and JSON - Add element

  - by Villager

  Hello, I have a JSON variable defined as: var myCollection = { "data": [ { "name":"Joe", "id":"1" }, { "name":"Bill", "id":"2" }, { "name":"Dave", "id":"3" } ] }; I have a JavaScript function that is responsible for adding items to the data element in myCollection. However, I'm not sure how to add a name/id pair to the collection via JavaScript. Can someone show me how to add to a JSON collection via JavaScript? Thank you!

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• Adding controls dynamically not XHTML formatted

  - by LiverpoolsNumber9

  Hi - I'm adding generic html controls to repeater items at "onitemdatabound". It works absolutely fine but just wondering (or hoping) if there's any way of getting those controls to render on the page in XHTML format? It's just an annoyance really - my markup is beautifully clean and correctly indented until the repeater! Using .net 3.5, and C#. Thanks in advance, Rob

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• Data Application based on OO Concepts

  - by The King

  Hi... I'm looking for an application developed in C# with following qualities, which is available as source code... Based on OO Architecture Must connect to DB. Must handle atleast a "one to many master child" relationship (eg: Order and items ordered) Should display the data using Datagrid or other similar controls. Reports (either with report buider or otherwise) I want to understand the layering of objects better... Do you have any links... Thanks.

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• EXC_MEMORY_ACCESS when trying to delete from Core Data ($cash solution)

  - 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 items from the xml data. This method looks like this: -(void) emptyDataContext { NSFetchRequest * allCon = [[NSFetchRequest alloc] init]; [allCon setEntity:[NSEntityDescription entityForName:@"Condition" inManagedObjectContext:managedObjectContext]]; NSError * error = nil; NSArray * conditions = [managedObjectContext executeFetchRequest:allCon error:&error]; DebugLog(@"ERROR: %@",error); DebugLog(@"RETRIEVED: %@", conditions); [allCon release]; for (NSManagedObject * condition in conditions) { [managedObjectContext deleteObject:condition]; } // Update the data model effectivly removing the objects we removed above. //NSError *error; if (![managedObjectContext save:&error]) { DebugLog(@"%@", [error domain]); } } 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 proceeding with the parse & build. All is well until its time to delete the core data objects. This 'deleteObject' call creates a "EXC_BAD_ACCESS" error each time. This only happens on the second time through. Captured errors return null. If I log the 'conditions' array I get a list of NSManagedObjects on the first run. On the second this log request causes a crash exactly as the deleteObject call does. I have a feeling it is something very simple I'm missing or not doing correctly to cause this behavior. The data works great on my tableviews - its only when trying to update I get the crashes. I have spent days & days on this trying numerous alternative methods. Whats left of my hair is falling out. I'd be willing to ante up some cash for anyone willing to look at my code and see what I'm doing wrong. Just need to get past this hurdle. Thanks in advance for the help!

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• Expand Drupal menu by default

  - by Dan G

  For the menu system, is there a way to set one of the menu items to be expanded by default? I can't get my home menu item to be expanded on the homepage (at the least), and I'd like it to be expanded whenever one of the other ones isn't. I'm using Drupal 5, and the Taxonomy Menu module. Taxonomy Menu is pretty good with 95% of my pages, but some are static "About Us" type pages, which I'd like to have the home menu as default for, and then there's the homepage.

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• Link Labels c# - displaying a list of them

  - by tom

  I am trying to add a list of linked lables to a listview. I amd doing so like this foreach (String s in values) { LinkLabel label = new LinkLabel(); label.Text = s; txtBox.Controls.Add(label); } } It keeps adding just one item to the listbox even tho there are more. Any ideas? ps) i can tell there are more items from adding a breakbpoint and using console.writeline when iterating Thanks

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• C# Listview : How do I get RowHeader

  - by Gaddigesh

  I have a ListView whose size is fixed to maximum of 10 items View Property is set to List and scroll is disabled I want to get row headers numbered from 1 to 10 How do I get that??

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• PHP How to create comma separated list from array?

  - by st4ck0v3rfl0w

  Hi All, I know how to loop through items of an array using foreach and append a comma, but it's always a pain having to take off the final comma. Is there an easy PHP way of doing it? $fruit = array('apple', 'banana', 'pear', 'grape'); Ultimately I want $result = "apple, banana, pear, grape"

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• jquery expanding menu+show/hide+multiple instances

  - by mark

  Hi, I have 2 scripts working ok separately but can't get them working together - What I'm after is expanding menus where if the items exceed 10 a 'more' link appears that expands the list, which can also then be hidden. http://www.brianfitzer.ie/test2/ expanding menu is file test12.html toggle+limit: toggle is file test13.html (I have these working separately) And then I need this to be able to be applied in multiple instances as I'll have multiple categories. Any code help greatly appreciated! (i'm a jquery newbie so if you have full code that would be xtra handy)

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• How to make a checkbox list that is also explorer tree?

  - by Loclip

  Lets say we have 3 categories Car Airplanes Bikes Each category have other categories for example car have: BMW Toyota Mercedes Each of these categories have cars (no more categories) Car, airplane, bikes will be items in the listbox that can be explored and checked. Now lets say we explore car there will be BMW, Toyota, Mercedes that can be only checked. So if I check car all car will be checked, if i check bmw only the bmw from cars will be checked.. How I can do that?

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• How to show own view in Spinner Widget instead of Text View?

  - by Janusz

  I have a selection for some items using a spinner widget. At the moment the spinner will load a simple Textview and show the name of the item. It is possible to define an own view to show inside the spinner row? I would suspect it being similar to a custom List row. I simply want to show an individual icon left from the spinner text for each item in the list.

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