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  • Complex Django filter question

    - by HWM-Rocker
    Lets say I have this class (simplified): class Tag (...): children = models.ManyToManyField(null=True, symmetrical=False) Now I already implemented the functions get_parents, get_all_ancestors. Is there a nice pythonic way to just the top level tags? If I had designed my Tags differently (to point to the parents instead) I would just make get_all_parents().filter(children=null). My first thought is to create a new function that will go recursively through all parents and save those that has none. But is there a possibility with filters or Query-objects to do the same (with fewer lines of code)? Thanks for your help. [edit] When it is finished, it should be a hierarchical tagging system. Each tag can have children, parents, but only the children are saved. I want to get all the top level tags, that point through many children / childrens children to my tag.

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  • how to listen for changes in Contact Database

    - by hap497
    Hi, I am trying to listen for any change in the contact database. So I create my contentObserver which is a child class of ContentObserver: private class MyContentObserver extends ContentObserver { public MyContentObserver() { super(null); } @Override public void onChange(boolean selfChange) { super.onChange(selfChange); System.out.println (" Calling onChange" ); } } MyContentObserver contentObserver = new MyContentObserver(); context.getContentResolver().registerContentObserver (People.CONTENT_URI, true, contentObserver); But When I use 'EditContactActivity' to change the contact database, My onChange function does not get called.

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  • When should I observe javascript events on window vs. document vs. document.body?

    - by brahn
    I'm using prototype.js for my web app, and I have everything running on chrome, safari, and firefox. I am now working on IE8 compatibility. As I've been debugging in IE, I've noticed that there are javascript events for which I have previously set an observer on the window, e.g. Event.observe(window, eventType, function () {...}); (where eventType might be "dom:loaded", "keypress", etc.) and it works just fine in Chrome/Safari/Firefox. However, in IE the observer never fires. In at least some cases I could get this to work on IE by instead placing the observer on something other than window, e.g. document (in the case of "dom:loaded") or document.body (in the case of "keypress"). However, this is all trial-and-error. Is there some more systematic way to determine where to place these observers such that the results will be cross-browser compatible? Thanks!

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  • SqlCommand asp.net C#

    - by emilios
    i you please help me out with my problem i am trying to create a function that output the data on a dropdownlist an setting my parameters my code goes as follow : public static List<string> GetTracks(out List<string> trackIds, string conferenceId) { var res = new List<string>(); trackIds = new List<string>(); var sqlCon = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString); SqlCommand cmd = new SqlCommand("select Track_name,Track_ID from TrackCommittee where Conference_id= @conferenceId", sqlCon); DataSet ds = new DataSet(); cmd.Connection.Open(); cmd.Parameters.Add(new SqlParameter("@conferenceId", conferenceId)); using (SqlDataReader sdr = cmd.ExecuteReader()) { while (sdr.Read()) { res.Add(sdr.GetString(sdr.GetOrdinal("Track_name"))); trackIds.Add(sdr.GetInt32(sdr.GetOrdinal("Track_ID")).ToString()); } } cmd.Connection.Close(); cmd.Dispose(); return res; } thanking you in advance

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  • Google Maps - Reserve Geocode -> Error "invalid label"

    - by Newbie
    Hello! I have the coordinates of my marker. Now I want to get the address of the marker. So I searched the web and found google maps reserve geocode. Now I tried to do the following: $.getJSON('http://maps.google.com/maps/api/geocode/json?latlng='+point.lat()+','+ point.lng() +'&key='+apiKey+'&sensor=false&output=json&callback=?', function(data) { console.log(data); }); When I try to show the address, meaning getting the json, firebug throws the following error: invalid label on "status": "OK",\n I searched a lot, but didn't find an answer solving my problem. Can you tell me whats wrong with my code? Is there another way to get the address data for the coordinates?

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  • Extended with advice: Moving block wont work in Javascript

    - by Mack
    Hello Note: this is an extension of a question I just asked, i have made the edits & taken the advice but still no luck I am trying to make a webpage where when you click a link, the link moves diagonally every 100 milliseconds. So I have my Javascript, but right now when I click the link nothing happens. I have run my code through JSLint (therefore changed comaprisions to === not ==, thats weird in JS?). I get this error from JSLink though: Error: Implied global: self 15,38, document 31 What do you think I am doing wrong? <script LANGUAGE="JavaScript" type = "text/javascript"> <!-- var block = null; var clockStep = null; var index = 0; var maxIndex = 6; var x = 0; var y = 0; var timerInterval = 100; // milliseconds var xPos = null; var yPos = null; function moveBlock() { if ( index < 0 || index >= maxIndex || block === null || clockStep === null ) { self.clearInterval( clockStep ); return; } block.style.left = xPos[index] + "px"; block.style.top = yPos[index] + "px"; index++; } function onBlockClick( blockID ) { if ( clockStep !== null ) { return; } block = document.getElementById( blockID ); index = 0; x = number(block.style.left); // parseInt( block.style.left, 10 ); y = number(block.style.top); // parseInt( block.style.top, 10 ); xPos = new Array( x+10, x+20, x+30, x+40, x+50, x+60 ); yPos = new Array( y-10, y-20, y-30, y-40, y-50, y-60 ); clockStep = self.SetInterval( moveBlock(), timerInterval ); } --> </script> <style type="text/css" media="all"> <!-- @import url("styles.css"); #blockMenu { z-index: 0; width: 650px; height: 600px; background-color: blue; padding: 0; } #block1 { z-index: 30; position: relative; top: 10px; left: 10px; background-color: red; width: 200px; height: 200px; margin: 0; padding: 0; /* background-image: url("images/block1.png"); */ } #block2 { z-index: 30; position: relative; top: 50px; left: 220px; background-color: red; width: 200px; height: 200px; margin: 0; padding: 0; /* background-image: url("images/block1.png"); */ } #block3 { z-index: 30; position: relative; top: 50px; left: 440px; background-color: red; width: 200px; height: 200px; margin: 0; padding: 0; /* background-image: url("images/block1.png"); */ } #block4 { z-index: 30; position: relative; top: 0px; left: 600px; background-color: red; width: 200px; height: 200px; margin: 0; padding: 0; /* background-image: url("images/block1.png"); */ } #block1 a { display: block; width: 100%; height: 100%; } #block2 a { display: block; width: 100%; height: 100%; } #block3 a { display: block; width: 100%; height: 100%; } #block4 a { display: block; width: 100%; height: 100%; } #block1 a:hover { background-color: green; } #block2 a:hover { background-color: green; } #block3 a:hover { background-color: green; } #block4 a:hover { background-color: green; } #block1 a:active { background-color: yellow; } #block2 a:active { background-color: yellow; } #block3 a:active { background-color: yellow; } #block4 a:active { background-color: yellow; } --> </style>

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  • Clear Session in ASP.Net

    - by Jignesh
    I want to clear the session on Page unload. Here is a condition : If user goes from Page A to Page B of the same site session must not get cleared. If user close the browser window or Tab(close the site),session must gets cleared. I have tried using AJAX PageMethod to call server-side procedure to remove session from client side script.But the procedure is not getting hit,I have checked it using Breakpoint. server side procedure is in master.cs file I will appreciate your help. Here is code in site.master <body onunload="HandleClose();"> <script type="text/javascript"> function HandleClose() { PageMethods.AbandonSessions(); } and here is a code in master.cs : [System.Web.Services.WebMethod] public static void AbandonSessions() { HttpContext.Current.Session.Abandon(); }

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  • SQL Server Group Concat with Different characters

    - by Molloch
    I have looked through a number of solutions to emulating "Group concat" functionality in SQL Server. I wanted to make a more human readable solution though and I can't work out how to do it. I have a view: ParentID | ChildName Which contains the records, for example: 1 | Max 1 | Jessie 2 | Steven 2 | Lucy 2 | Jake 3 | Mark I want to "Group Concat" these to get: 1 | Max and Jessie 2 | Steven, Lucy and Jake 3 | Mark So If there is only 1 child, just return name, if there are more than one, concat the last 2 with an ' and ' and all others with a ', '. I am a bit stuck on how to do this without resorting to CLR, which I don't want to do. I am happy with a function - but speed is an issue and how do I determine the child number so I can choose between ' and ', ', ' or ''?

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  • Hide select option Cross Browser

    - by Tapas Bose
    Isn't there any way to do it? I have made jsFiddle which is not working in IE. The piece of code is given below: The HTML <select id="testing"> <option value="1">Option 1</option> <option value="2">Option 2</option> <option value="3">Option 3</option> </select> The jQuery $(document).ready(function() { $('select#testing option').eq(1).attr({ disabled: 'disabled' }); }); The CSS select option[disabled] {display: none;} Any pointer would be helpful. Note: I cannot use .remove() method.

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  • identifying the type

    - by Gokul
    Hi, In my application, there is a inheritance hierarchy in which only the classes that are at the end of the inheritance chain are non-abstract classes. Also there is some usage of boost::variant. I want to write a function which takes a pointer and a Type and says whether the object belongs to that type. For example template< typename Type, bool TypeisAbstract, typename ptrType > bool checkType( ptrType* t) { return ( typeid(*t) == typeid(Type) ); } template< typename Type, typename ptrType > bool checkType<Type, true, ptrType>( ptrType* t) { return ( dynamic_cast<Type*>(t) != NULL ); } Now if there is a boost variant, i want to find out whether the boost variant stores that particular type. Can someone help me with that? Thanks, Gokul.

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  • Modal Pop Extender Inside Update Panel

    - by Agamand The True
    Hi, I have a modal popup extender which is triggered by gridview onRowCommand. The gridview and the modal popup extender is in different updatePanel. The panel which assigned to PopupControlID of the mpe contains a textbox and a button. This button will triggered a page method web service that will return a value to be assigned to the textbox. My problem is when I click the button, after partial post back, the mpe disapper (hide). I tried everything to make it show. Below is my code. function Completed(result) { //get the target textbox inside the mpe var txt = '<%= txtContractNo.ClientID %>'; var txtRef = document.getElementById(txt); txtRef.value = result; var mpeId = '<%= mpeContract.ClientID %>'; $find(mpeId).show(); } How to make it show after partial post back? Thanks In advance

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  • Racket regular-expression matching

    - by Inaimathi
    I'm trying to create a regex that matches the inverse of a certain string type (so, strings not ending in ".js", for example). According to the documentation, that should be the expression #rx"(?!\\.js$)", but it doesn't seem to work. To test it out, I have this function: (define (match-test regex) (map (lambda (text) (regexp-match? regex text)) '("foo.js" "bar.css" "baz.html" "mumble.gif" "foobar"))) (match-test #rx"\\.js$") returns (#t #f #f #f #f) as expected, but (match-test #rx"(?!\\.js$)") returns (#t #t #t #t #t), where I would expect (#f #t #t #t #t). What am I doing wrong, and how do I actually get a regex in Racket to express the idea "match anything which does not contain [x]"?

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  • Identifying an empty text node with jQuery + Javascript

    - by b. e. hollenbeck
    You'd think this was easy - but I'm having the hardest time with it. Here's what I'm trying to identify: <span class="cw-value-one"></span> Here's what I'm using so far: $('span.cw-value-one').each(function(){ var textNode = $(this).text(); var type = typeof textNode; var len = textNode.length; if($(this).is(':empty')){ $(this).siblings('span.cw-value-two').css({"position": "relative", "left": "1em"}); } }); Ok, so textNode = "", type = string and len = 1 - none of which is helpful in identifying an empty text node, since a has a type of string and length of 1. The jQuery .is(':empty') is not working either. So whow do you identify an empty text node in JQuery or plain ol' Javascript?

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  • Display PDF in Html

    - by anil
    Hi, i want to show PDF in a view in MVC, following function return file public ActionResult TakeoffPlans(string projID) { Highmark.BLL.Models.Project proj = GetProject(projID); List ff = proj.GetFiles(Project_Thin.Folders.CompletedTakeoff, false); ViewData["HasFile"] = "0"; if (ff != null && ff.Count 0 && ff.Where(p = p.FileExtension == "pdf").Count() 0) { ViewData["HasFile"] = "1"; } ViewData["ProjectID"] = projID; ViewData["Folder"] = Project_Thin.Folders.CompletedTakeoff; //return View("UcRenderPDF"); string fileName = Server.MapPath("~/Content/Project List Update 2.pdf"); return File(fileName, "application/pdf", Server.HtmlEncode(fileName)); } but it display some bad data in view, please help me on this

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  • jQuery Plugin Overwriting Parameters

    - by Travis
    Hey Everyone, This maybe a very mundane question, but this is the first jQuery plugin that I write and I'm a bit fuzzy on understanding the scope rules in Javascript. I'm trying to write an simple jQuery plugin that wraps around the Stack Overflow API. I'm starting off by trying to work with the Flair API. I wanted to make the plugin as configurable as possible so that you can easily pass it the domain and user id, and generate multiple Flairs. var superUser = $.jStackOverflow.flair({domain:"superuser.com", id: 30162, parentId:'#su-flair'}); var stackOverflow = $.jStackOverflow.flair({domain:"stackoverflow.com", id: 55954, parentId:'#so-flair'}); The problem is, when it makes the second call, its somehow using the correct domain and id parameters, but the parentId field that it's using in the callback function to create the html, is using the first parameter. You can see the plugin here and the html here

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  • Sql Server SMO connection timeout not working

    - by Uros Calakovic
    I have the following PowerShell code: function Get-SmoConnection { param ([string] $serverName = "", [int] $connectionTimeout = 0) if($serverName.Length -eq 0) { $serverConnection = New-Object ` Microsoft.SqlServer.Management.Common.ServerConnection } else { $serverConnection = New-Object ` Microsoft.SqlServer.Management.Common.ServerConnection($serverName) } if($connectionTimeout -ne 0) { $serverConnection.ConnectTimeout = $connectionTimeout } try { $serverConnection.Connect() $serverConnection } catch [system.Management.Automation.MethodInvocationException] { $null } } $connection = get-smoconnection "ServerName" 2 if($connection -ne $null) { Write-Host $connection.ServerInstance Write-Host $connection.ConnectTimeout } else { Write-Host "Connection could not be established" } It seems to work, except for the part that attempts to set the SMO connection timeout. If the connection is successful, I can verify that ServerConnection.ConnectTimeout is set to 2 (seconds), but when I supply a bogus name for the SQL Server instance, it still attempts to connect to it for ~ 15 seconds (which is I believe the default timeout value). Does anyone have experience with setting SMO connection timeout? Thank you in advance.

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  • How do I add a static library target that compiles before an application compiles in Xcode?

    - by Koning Baard XIV
    I'm creating a static library in C++. The static library itself links to nothing. To test the static library, I'm creating a test program in C++ (you know, with a main function). Now, I want that whenever I click Build in Xcode, it compiles the static library first, then compiles the test program and link that test program to the static library, like this: # The steps indicate the order Xcode should compile it # (Step 1) Static Library <----------. | (Step 2) Test Program -------> Standard Library Also, the test program should use the header files of the static library. Can anyone explain me how to configure this in Xcode? Thanks

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  • setlocale/strftime issue

    - by Manos Dilaverakis
    I am using the following to output the full name of a month in Greek. setlocale(LC_TIME, 'el_GR'); strftime("%B"); This works, except the output string is ISO-8859-7 (greek code page), which is a problem since I need a UTF-8 string. I could put this through iconv to convert it, but I was wondering if there was a way to do that without resorting to an extra function. Could you somehow tell strftime to output a UTF-8 string in this case?

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  • How does one use dynamic recompilation?

    - by acidzombie24
    It came to my attention some emulators and virtual machines use dynamic recompilation. How do they do that? In C i know how to call a function in ram using typecasting (although i never tried) but how does one read opcodes and generate code for it? Does the person need to have premade assembly chunks and copy/batch them together? is the assembly written in C? If so how do you find the length of the code? How do you account for system interrupts?

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  • All words in a trie data-structure

    - by John Smith
    I'm trying to put all words in a trie in a string, a word is detonated by the eow field being true for a certain character in the trie data structure, hence a trie can could have letters than lead up to no word, for ex "abc" is in the trie but "c"'s eow field is false so "abc" is not a word Here is my Data structure struct Trie { bool eow; //when a Trie field isWord = true, hence there is a word char letter; Trie *letters[27]; }; and here is my attemped print-all function, basically trying to return all words in one string seperated by spaces for words string printAll( string word, Trie& data) { if (data.eow == 1) return word + " "; for (int i = 0; i < 26; i++) { if (data.letters[i] != NULL) printAll( word + data.letters[i]->letter, *(data.letters[i])); } return ""; } Its not outputting what i want, any suggestions?

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  • Snatching the code of a Facebook fan page canvas?

    - by Andre
    I am trying to snatch the code of this fan page: http://www.facebook.com/pages/See-oho-nieps-YothG-RRofiLe/106340746065367 I need the function that suggests the fan page to the users friends automatically (not for spamming purposes as the above fan page is used for). Now by looking at the source, I know that the code is under the pagelet_tab_content, but not all of it. I have copied that part and pasted it into my own fan page. The layout looks identical but the functions does not work. Obviously something is missing. For instance, I cant find the in the source which is strange, as I know for definate that it is being used. I have been working with this all day without any result. Maybe there is someone more intelligent and experienced that could help me out?

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  • javascript string exec strange behavior

    - by Michael
    have funciton in my object which is called regularly. parse : function(html) { var regexp = /...some pattern.../ var match = regexp.exec(html); while (match != null) { ... match = regexp.exec(html); } ... var r = /...pattern.../g; var m = r.exec(html); } with unchanged html the m returns null each other call. let's say parse(html);// ok parse(html);// m is null!!! parse(html);// ok parse(html);// m is null!!! // ...and so on... is there any index or somrthing that has to be reset on html ... I'm really confused. Why match always returns proper result?

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  • Jquery UI Autocomplete widget conflict qith jqeury.menu widget - how can I solve it?

    - by JK
    My app already has a completed menu using jquery.menu.js found at http://wiki.jqueryui.com/Menu. I'm now also trying to add the jquery autocomplete widget from jquery ui 1.8.1 - but both of these have a .menu() function that conflicts with each other. If I put jquery-ui-1.8.1.custom.js first in the head, then autocomplete works but the menu does not. If I put jquery-menu.js first in the head, then the menu works but autocomplete doesnt. Is there a way to solve this without editing either plugin? (If I edit, I will probably lose those changes the next time either plugin is upgraded)

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  • Strange thing about .NET 4.0 filesystem enumeration functionality

    - by codymanix
    I just read a page of "Whats new .NET Framework 4.0". I have trouble understanding the last paragraph: To remove open handles on enumerated directories or files Create a custom method (or function in Visual Basic) to contain your enumeration code. Apply the MethodImplAttribute attribute with the NoInlining option to the new method. For example: [MethodImplAttribute(MethodImplOptions.NoInlining)] Private void Enumerate() Include the following method calls, to run after your enumeration code: * The GC.Collect() method (no parameters). * The GC.WaitForPendingFinalizers() method. Why the attribute NoInlining? What harm would inlining do here? Why call the garbage collector manually, why not making the enumerator implement IDisposable in the first place? I suspect they use FindFirstFile()/FindNextFile() API calls for the imlementation, so FindClose() has to be called in any case if the enumeration is done.

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  • String labels on boxplot outliers

    - by Benoît Collette
    Hi! I want to put string labels on outliers in a boxplot. Here's a simplification of the dataset I'm using: [,x] [,y] [,z] 7 2 a 10 2 b 112 3 c boxdata<-boxplot(x ~ y) To put values as label on outliers by group, I use this function: for(i in 1:length(boxdata$group)){ text(boxdata$group[i], boxdata$out[i], which(x==boxdata$out[i]),labels=boxdata$out[i],pos=4) } The problem is that I want to put z (string) as label instead of outlier value, but I don't know how to proceed. What do I need to do? Thank you! Ben

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