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  • How can a separator be added between items in an ItemsControl

    - by Grandpappy
    I'm needing to display a list of numbers from a collection in an Items Control. So the items are: "1", "2", "3". When they are rendered, I need them separated by a comma (or something similar). So the above 3 items would look like this: "1, 2, 3". How can I add a separator to the individual items, without having one tacked on the end of the list? I am not stuck on using an ItemsControl, but that's what I had started to use.

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  • Django ORM: Ordering w/ aggregate functions — None special treatment

    - by deno
    Hi, I'm doing query like that: SomeObject.objects.annotate(something=Avg('something')).order_by(something).all() Now, I normally have an aggregate field in my model that I use with Django signals to keep in sync, however in this case perfomance isn't an issue so I thought I'd keep it simple and just use subqueries. This approach, however, presented an unexpected issue: It all works grate if aggregate function results are like this: [5.0, 4.0, 6.0 … (etc, just numbers)] However if you mix in some Nones than it's being ordered like this: [None, 5.0, 4.0 …] The issue is that None has higher value than any number, while it should have value at most of 0. I'm using PostgreSQL and haven't tested w/ other DBs. I haven't actually checked what query is generated etc. I worked it around by just sorting in memory: sorted(…, key=lambda _:_.avg_rating if _.avg_rating is not None else 0) So I'm just curious if you know a way to do it w/ just Django ORM. Perhaps .where? or something… Kind regards

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  • WPF Binding Failure performance hit vs Exception

    - by Aran Mulholland
    when we bind to heterogeneous collection of objects, not all objects have the same set of properties. in the output window we get a message like: System.Windows.Data Error: 39 : BindingExpression path error: 'RoundingFactor' property not found on 'object' ''MultiLineTextMarkingScheme' (HashCode=7262386)'. BindingExpression:Path=RoundingFactor;.......... This doesn't appear to be an exception, but we are concerned it has a performance impact. Should we be concerned and create a view model that has all the properties we wish to bind to (and have the properties that dont exist on the underlying element return null) or can we just leave it. This situation often occurs in a grid scenario where there might be large numbers of these binding failures.

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  • LINQ: GroupBy with maximum count in each group

    - by polarbear2k
    Hi, I have a list of duplicate numbers: Enumerable.Range(1,3).Select(o => Enumerable.Repeat(o, 3)).SelectMany(o => o) // {1,1,1,2,2,2,3,3,3} I group them and get quantity of occurance: Enumerable.Range(1,3).Select(o => Enumerable.Repeat(o, 3)).SelectMany(o => o) .GroupBy(o => o).Select(o => new { Qty = o.Count(), Num = o.Key }) Qty Num 3 1 3 2 3 3 What I really need is to limit the quantity per group to some number. If the limit is 2 the result for the above grouping would be: Qty Num 2 1 1 1 2 2 1 2 2 3 1 3 So, if Qty = 10 and limit is 4, the result is 3 rows (4, 4, 2). The Qty of each number is not equal like in example. The specified Qty limit is the same for whole list (doesn't differ based on number). Thanks

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  • Howto I get the user domain\username and Display name From SharePoint People Picker InternalId?

    - by Benjamin Wong
    I have been trying to user sharepoint designer to retrieve the user's full name and even the domain\username from the people pucker field but the problem is I tend to get numbers. It looks like the intetrnal Id. In my case I am getting 14 instead of domain\username from the list form's field. Any idea on where I can get the dmain\username or even better the full name? Thanks !! I am using SharePoint Designer and Windows Sharepoint Services 3/SharePoint 2007. Update : I have managed to get the domain\username now. I just had to change the people picker's show field to ID. However now I am getting a weird prefix on my domain\username. I am getting this -1;#domain\username instead of just domain\username. Anybody know how I can overcome this? Thanks !!

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  • Create a JSON Array using Java

    - by Ankur
    Hi I want to create a JSON array. I have tried using: JSONArray jArray = new JSONArray(); while(itr.hasNext()){ int objId = itr.next(); jArray.put(objId, odao.getObjectName(objId)); } results = jArray.toString(); Note: odao.getObjectName(objId) retrieves a name based on the "object Id" which is called objId However I get a very funny looking array like [null,null,null,"SomeValue",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"AnotherValue",null,null,null,null,null,null,null,null,null,null,"SomethingElse","AnotherOne","LastOne"] With only "LastOne" being displayed when I retrieve it using jQuery. The Array SHould look like {["3":"SomeValue"],["40":"AnotherValue"],["23":"SomethingElse"],["9":"AnotherOne"],["1":"LastOne"]} The numbers aren't showing up at all for some reason in the array that I am getting

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  • MVC Authorize Attribute + HttpUnauthorizedResult + FormsAuthentication

    - by Anthony
    After browsing the MVC section on CodePlex I noticed that the [Authorize] attribute in MVC returns a HttpUnauthorizedResult() when authorization fails (codeplex AuthorizeAttribute class). In the source of HttpUnauthorizedResult() from CodePlex is the code (I'm not allowed to enter another URL as my rep isn't high enough, but replace the numbers on the URL above with 22929#266476): // 401 is the HTTP status code for unauthorized access - setting this // will cause the active authentication module to execute its default // unauthorized handler context.HttpContext.Response.StatusCode = 401; In particular, the comment describes the authentication module's default unauthorized handler. I can't seem to find any information on this default unauthorized handler. In particular, I'm not using FormsAuthentication and when authorization fails I get an ugly IIS 401 error page. Does anyone know about this default unauthorized handler, and in particular how FormsAuthentication hooks itself in to override it? I'm writing a really simple app for my football team who confirm or deny whether they can play a particular match. If I enable FormsAuthentication in the web.config the redirect works, but I'm not using FormsAuthentication and I'd like to know if there's a workaround.

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  • Size Mismatch Between Swing Fonts and Printable Fonts in Java

    - by Caleb Rackliffe
    Hi All, I've got a panel displaying a JTextPane backed by a StyledDocument. When I print a string of text in, say Arial 16, the text it prints is of a different size than the Arial 16 Word prints. Is there some sort of flaw in the translation of Swing fonts to Windows system fonts or something of the sort that makes it difficult (or impossible) to print accurately? I can achieve an approximation by scaling down the size of my font before printing, but this never quite gets me the results I would like, as it's not possible in all cases to reproduce things like equivalent numbers of words on a line, etc. Has anybody run into this before?

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  • Better Flex memory profiling tools

    - by verveguy
    Does anyone know of any better tools that the Flex Builder Profiler? I've googled and googled to no avail. While the FB tools are OK for small apps / small leak situations, they're nowhere near adequate for wading through the thicket of object references that can arise in a large scale Flex app (that is leaking memory heavily). In particular, any reasonably complex view structure ends up with huge numbers of parent/child object references to the top level view - none of which are at all relevant to finding the one or two refs from outside the parent child subgraph that are causing the whole bolus to be non-GC'able. If no one has any better suggestions, I'm seriously considering writing a tool to parse the saved profile dumps that Flex Builder can generate so that I can do my own "graph pruning" to find the important refs. If I go this route, collaboration would be welcome!

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  • IE GIF/PNG Transparency issue with jQuery

    - by Andrew
    Ok, this is pretty weird... Here's the page in question: http://s289116086.onlinehome.us/lawjournaltv/index.php The main blue callout background was originally a PNG, but when I applied some jQuery trickery to it (click the numbers in the top right to see what I mean), an ugly white border appeared where the transparency should be. See this screenshot from IE8: http://skitch.com/darkdriving/n62bu/windows-xp-professional I figured I could sacrifice the quality/flexibility of a PNG and just resaved each of the backgrounds as GIFs and set the matte color to white (for now). Well, I was proven wrong because IE is treating the GIF transparency the same as the original PNGs. I've read here that the issue with PNGs, Javascript, and IE has something to do with multiple filters can't be applied to one image, but shouldn't GIFs be exempt from this because they lack the Alpha Channel? Is there any way to make this page look similar in IE to Firefox or Webkit browsers? Thanks in advance!

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  • Set form field values in ExtJS

    - by jeremib
    I'm using ExtJS to create a formPanel: new Ext.FormPanel({ labelAlign: 'top', title: 'Loading Contact...', bodyStyle:'padding:5px', width: 600, autoScroll: true, closable: true, items: [{ layout:'column', border:false, items:[{ columnWidth:.5, layout: 'form', border:false, items: [{ xtype:'textfield', fieldLabel: 'First Name', name: 'first_name', id: 'first_name', anchor:'95%' }, { xtype:'datefield', fieldLabel: 'Birthdate', name: 'birthdate', width: 150, }] },{ columnWidth:.5, layout: 'form', border:false, items: [{ xtype:'textfield', fieldLabel: 'Last Name', name: 'last_name', anchor:'95%' },{ xtype:'textfield', fieldLabel: 'Email', name: 'email', vtype:'email', anchor:'95%' }] }] },{ xtype:'tabpanel', plain:true, activeTab: 0, height:300, /* * By turning off deferred rendering we are guaranteeing that the * form fields within tabs that are not activated will still be * rendered. This is often important when creating multi-tabbed * forms. */ deferredRender: false, defaults:{bodyStyle:'padding:10px'}, items:[{ title:'Address', layout:'form', defaults: {width: 230}, defaultType: 'textfield', items: [{ fieldLabel: 'Line1', name: 'line1', allowBlank:false, },{ fieldLabel: 'Line2', name: 'line2', },{ fieldLabel: 'City', name: 'city', allowBlank: false, },{ xtype:"combo", fieldLabel:"State", name:"state", hiddenName:"combovalue" }, { fieldLabel: 'Zipcode', name: 'zipcode', allowBlank: false, }] },{ title:'Phone Numbers', layout:'form', defaults: {width: 230}, defaultType: 'textfield', items: [{ fieldLabel: 'Home', name: 'home_phone', },{ fieldLabel: 'Cell', name: 'cell_phone' },{ fieldLabel: 'Emergency', name: 'emergency_phone' }] },{ cls:'x-plain', title:'Notes', layout:'fit', items: { xtype:'htmleditor', name:'notes', fieldLabel:'Notes' } }] }], buttons: [{ text: 'Save' },{ text: 'Cancel' }] }) How do I access the form fields by the name to set their value manually? Thanks

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  • Minimax algorithm: Cost/evaluation function?

    - by Dave
    Hi guys, A school project has me writing a Date game in C++ (example at http://www.cut-the-knot.org/Curriculum/Games/Date.shtml) where the computer player must implement a Minimax algorithm with alpha-beta pruning. Thus far, I understand what the goal is behind the algorithm in terms of maximizing potential gains while assuming the opponent will minify them. However, none of the resources I read helped me understand how to design the evaluation function the minimax bases all it's decisions on. All the examples have had arbitrary numbers assigned to the leaf nodes, however, I need to actually assign meaningful values to those nodes. Intuition tells me it'd be something like +1 for a win leaf node, and -1 for a loss, but how do intermediate nodes evaluate? Any help would be most appreciated.

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  • Facebook graph API - OAuth Token

    - by Simon R
    I'm trying to retrieve data using the new graph API, however the token I'm retriving from OAuth doesn't appear to be working. The call I'm making is as follows; $token = file_get_contents('https://graph.facebook.com/oauth/access_token?type=client_cred&client_id=<app_id>&client_secret=<app secret>'); This returns a token with a string length of 41. To give you an example of what is returned I have provided below a sample (converted all numbers to 0, all capital letters to 'A' and small case letters to 'a' access_token=000000000000|AaaAaaAaaAAaAaaaaAaaAa0aaAA. I take this access token and attach it to the call request for data, it doesn't appear to be the correct token as it returns nothing. I make the data call as follows; file_get_contents('https://graph.facebook.com/<my_page's_id>/statuses?access_token=000000000000|AaaAaaAaaAAaAaaaaAaaAa0aaAA.') When I manually retrieve this page directly through the browser I get an 500/Internal Server Error Message. Any assistance would be grately appreciated.

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  • Can a telephony.Phone object be instantiated through the sdk?

    - by Tyler
    I am trying to get a phone object so that I can call and conference two numbers from within my application. I have tried using the static PhoneFactory.makeDefaultPhones((Context)this) but have not had any luck. String phoneFactoryName = "com.android.internal.telephony.PhoneFactory"; String phoneName = "com.android.internal.telephony.Phone"; Class phoneFactoryClass = Class.forName(phoneFactoryName); Class phoneClass = Class.forName(phoneName); Method getDefaultPhone = phoneFactoryClass.getMethod("getDefaultPhone"); Object phoneObject = getDefaultPhone.invoke(null); Error - Caused by java.lang.RuntimeException: PhoneFactory.getDefaultPhone must be called from Looper thread

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  • Is there a list of known web crawlers?

    - by J. Pablo Fernández
    I'm trying to get accurate download numbers for some files on a web server. I look at the user agents and some are clearly bots or web crawlers, but many for many I'm not sure, they may or may not be a web crawler and they are causing many downloads so it's important for me to know. Is there somewhere a list of know web crawlers with some documentation like user agent, IPs, behavior, etc? I'm not interested in the official ones, like Google's, Yahoo's, or Microsoft's. Those are generally well behaved and self-indentified.

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  • How do you read a segfault kernel log message.

    - by Sullenx
    This can be a very simple question, I'm am attempting to debug an application which generates the following segfault error in the kern.log /var/log/kern.log.0:Jan 8 13:25:56 myhost kernel: myapp[15514]: segfault at 794ef0 ip 080513b sp 794ef0 error 6 in myapp[8048000+24000] Here are my questions: 1) Is there any documentation as to what are the diff error numbers on segfault, in this instance it is error 6, but i've seen error 4, 5 2) What is the meaning of the information at bf794ef0 ip 0805130b sp bf794ef0 and myapp[8048000+24000]? So far i was able to compile with symbols, and when i do a "x 0x8048000+24000" it returns a symbol, is that the correct way of doing it? My assumptions thus far are the following: sp = stack pointer? ip = instruction pointer at = ???? myapp[8048000+24000] = address of symbol?

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  • TeamCity - Build triggering on specific file, Mercurial

    - by Garrett
    Hi I'm trying to get my build to trigger only when i create a Tag in Mercurial. The way im trying to do this is by creating an additional Build Config (Tag Conf) for my project where I set the VCS build trigger to: +:/.hgtags --Trigger only when tags are updated -:. --Do not trigger on any other files Whenever i push a changeset (without a Tag) in the overview my build conf (Tag Conf) says "X Pending", i suspect this is the changesets. And when I create a Tag in Mercurial, a build i is triggered and the X Pending goes away. Then all there is left for me todo is to update build/rev numbers in AssemblyInfo (somehow) and deploy the Artifacts(somehow). Question: Is this the correct way to do this or are there another/better way to do this? (Im using sln2010 runner + NUnit + Mercurial) Kind Regards

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  • Bulk email sender and list management API

    - by goombaloon
    I'm looking for a way to programmatically manage email lists and send large numbers of emails to these lists. The general idea would be similar to how social networking sites send email notifications when a friend posts new content. Since a user could have tens of thousands of followers, it doesn't seem realistic to send these directly from my application so I'm curious if there's a good way to handle this through a service provider. My company is using Google apps but I'm not an expert on their API. Our environment is ASP.NET MVC. Any advice is most appreciated!

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  • Higher-order type constructors and functors in Ocaml

    - by sdcvvc
    Can the following polymorphic functions let id x = x;; let compose f g x = f (g x);; let rec fix f = f (fix f);; (*laziness aside*) be written for types/type constructors or modules/functors? I tried type 'x id = Id of 'x;; type 'f 'g 'x compose = Compose of ('f ('g 'x));; type 'f fix = Fix of ('f (Fix 'f));; for types but it doesn't work. Here's a Haskell version for types: data Id x = Id x data Compose f g x = Compose (f (g x)) data Fix f = Fix (f (Fix f)) -- examples: l = Compose [Just 'a'] :: Compose [] Maybe Char type Natural = Fix Maybe -- natural numbers are fixpoint of Maybe n = Fix (Just (Fix (Just (Fix Nothing)))) :: Natural -- n is 2 -- up to isomorphism composition of identity and f is f: iso :: Compose Id f x -> f x iso (Compose (Id a)) = a

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  • Data Structures

    - by Phoenix
    There is a large stream of numbers coming in such as 5 6 7 2 3 1 2 3 .. What kind of data structure is suitable for this problem given the constraints that elements must be inserted in descending order and duplicates should be eliminated. I am not looking for any code just ideas? I was thinking of a Self-Balancing BST where we could add the condition that all nodes < current node on left and all nodes current node on right, this takes care of the duplicates .. but i don't think they are necessarily inserted in descending order. Any ideas what might be a better choice .. ofcourse it needs to be efficient time and space wise.

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  • SQL Split function that handles string with delimeter appearing between text qualifiers?

    - by Ron
    There are several SQL split functions, from loop driven, to using xml commands, and even using a numbers table. I haven't found one that supports text qualifiers. Using the example string below, I would like to split on ",", but not when it appears between double or single quotes. Example data: [email protected], "Sally \"Heat\" Jones" <[email protected]>, "Mark Jones" <[email protected]>, "Stone, Ron" <[email protected]> Should return a table: [email protected] "Sally \"Heat\" Jones" <[email protected]> "Mark Jones" <[email protected]> "Stone, Ron" <[email protected]> I know this is a complex query/function, but any suggestions or any guidance would be mucho appreciated.

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  • GetWindowPlacement/SetWindowPlacement not working in WinForms for high DPI

    - by RandomEngy
    I've got a legacy WinForms app and I want to save the window position and size across sessions. I've been using GetWindowPlacement and SetWindowPlacement during the FormClosing and Load events. The problem I'm getting is that at higher DPI settings (Such as Medium, size at 125%) the sizes keep inflating. I'll call SetWindowPlacement on it with a certain size, but when GetWindowPlacement is called, those numbers come back 25% bigger, even though the window was the same size all along. The same sort of problem exists when saving the size of a resizable element within the form. Now this works fine if I create a new WinForms project: The size stays stable even when running at the higher DPI. I'm guessing there's some legacy setting in the bowels of the project or some arcane Form setting that's messing it up, but I can't find out where. I've called IsProcessDPIAware on both projects and both are true. Does anyone know what might be causing this?

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  • Convert javascript ticks to date in Flot jQuery-plugin issue

    - by Kasper Skov
    I have a dynamic Flot graph with dates on the x-axis and numbers on the y-axis. To get the Flot-plugin to read the date object correctly, I had to convert the dates to ticks (with getTime()). My problem is that I can't revers the ticks back to a normal date in my tooltip hover on the graph. I've tried to revers it with this: dateTimeObject = new Date((jsTicks - 621355968000000000) / 10000); All I get, no matter what jsTicks is, is "Jan 02 0001 hh:mm:ss (almost current time)" What am I doing wrong?

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  • Are there alternatives to UltraWinGrid (for C#)?

    - by MPelletier
    I've been using the Infragistics UltraWinGrid for a while in a C# project, and while it's very spiffy, it is sometimes a bit heavy to run (and editing it in Visual Studio can be hazardous). I'm looking for a lighter alternative. Looks (always a big plus with Infragistics) are not as important as functionality. Namely, I'm looking for a beefed up DataGridView which: has data binding (duh!) has lock control over editing allows for sub-tables on opening a row can have multiple headers to group columns together (say header 1 is composed of "Group A" and "Group B", and header 2 has various columns under each group) has sorting by column (and can sort numbers properly, even if it does not have a stock method at first) has filtering by column (perhaps the most demanding spec) à la UltraWinGrid/Excel (text field with a way to specify if the filter is equal, not equal, greater, lesser, starts with, ends with, etc). supports check box, text box or data bound list/combo box cells allows cells to be merged (not the control cells of course!) can have events bound to each row (say double click)

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  • djb2 Hash Function

    - by Jainish
    I am using the djb2 algorithm to generate the hash key for a string which is as follows hash(unsigned char *str) { unsigned long hash = 5381; int c; while (c = *str++) hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ return hash; } Now with every loop there is a multiplication with two big numbers, After some time with the 4th of 5th character of the string there is a overflow as the hash value becomes huge What is the correct way to refactor so that the hash value does not overflow and the hashing also happens correctly

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