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  • jQuery Drag/Drop problem: mousemove Event not binding for some elements

    - by saturdayplace
    Using the latest jQuery/UI that are hosted at Google. I've got the following markup: <ul id="tree"> <li><a href="1/">One</a></li> <li><a href="2/">Two</a></li> </ul> And the following javascript: $(document).ready(function(){ // Droppable callbacks function dragOver(overEvent, ui_object) { $(this).mousemove(function(moveEvent){ console.log("moved over", this); }); } function drop_deactivate() { $(this).unbind(); } function drag_out() { $(this).unbind(); } // Actual dragging $("#treeContainer li").draggable({ revert: true, revertDuration: 0 }); // Actuall dropping $("a").droppable({ tolerance: "pointer", over: dragOver, deactivate: drop_deactivate, out: drag_out }); }); If I drag the first li down over the second, the mousemove function fires (and firebug logs the output). But if I drag the second li up over the first, the mousemove function doesn't fire. You can see this live at http://jsbin.com/ivala. Is there a reason for this? Should I be trapping the mousemove event in some other way? Edit: It appears as thought the mousemove() event isn't binding for earlier elements than the one currently being dragged (should be bound upon their mouseover).

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  • Emacs recursive project search

    - by hekevintran
    I am switching to Emacs from TextMate. One feature of TextMate that I would really like to have in Emacs is the "Find in Project" search box that uses fuzzy matching. Emacs sort of has this with ido, but ido does not search recursively through child directories. It searches only within one directory. Is there a way to give ido a root directory and to search everything under it? Update: The questions below pertain to find-file-in-project.el from Michal Marczyk's answer. If anything in this message sounds obvious it's because I have used Emacs for less than one week. :-) As I understand it, project-local-variables lets me define things in a .emacs-project file that I keep in my project root. How do I point find-file-in-project to my project root? I am not familiar with regex syntax in Emacs Lisp. The default value for ffip-regexp is: ".*\\.\\(rb\\|js\\|css\\|yml\\|yaml\\|rhtml\\|erb\\|html\\|el\\)" I presume that I can just switch the extensions to the ones appropriate for my project. Could you explain the ffip-find-options? From the file: (defvar ffip-find-options "" "Extra options to pass to `find' when using find-file-in-project. Use this to exclude portions of your project: \"-not -regex \\".vendor.\\"\"") What does this mean exactly and how do I use it to exclude files/directories? Could you share an example .emacs-project file?

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  • How to use Scala in IntelliJ IDEA (or: why is it so difficult to get a working IDE for Scala)?

    - by Alex R
    I recently gave up trying to use Scala in Eclipse (basic stuff like completion doesn't work). So now I'm trying IntelliJ. I'm not getting very far. I've been able to edit programs (within syntax highlighting and completion... yay!). But I'm unable to run even the simplest "Hello World". This was the original error: Scala signature Predef has wrong version Expected 5.0 found: 4.1 in .... scala-library.jar But that was yesterday with IDEA 9.0.1. See below... UPDATE Today I uninstalled IntelliJ 9.0.1, and installed 9.0.2 Early Availability, with the 4/14 stable version of the Scala plug-in. Then I setup a project from scratch through the wizards: new project from scratch JDK is 1.6.u20 accept the default (project) instead of global / module accept the download of Scala 2.8.0beta1 into project's lib folder Created a new class: object hello { def main(args: Array[String]) { println("hello: " + args); } } For my efforts, I now have a brand-new error :) Here it is: Scalac internal error: class java.lang.ClassNotFoundException [java.net.URLClassLoader$1.run(URLClassLoader.java:202), java.security.AccessController.doPrivileged(Native Method), java.net.URLClassLoader.findClass(URLClassLoader.java:190), java.lang.ClassLoader.loadClass(ClassLoader.java:307), sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301), java.lang.ClassLoader.loadClass(ClassLoader.java:248), java.lang.Class.forName0(Native Method), java.lang.Class.forName(Class.java:169), org.jetbrains.plugins.scala.compiler.rt.ScalacRunner.main(ScalacRunner.java:72)] FINAL UPDATE I uninstalled 9.0.2 EA and reinstalled 9.0.1, but this time went with the 2.7.3 version of Scala rather than the default 2.7.6, because 2.7.3 is the one shown in the screen-shots at the IntelliJ website (I guess the screen-shots prove that they actually tested this version!). Now everything works!!!

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  • ps forrest for session id

    - by azatoth
    Often I want to get a nice readout what process are running and their relationship; I usually by habit runs ps auxfww and eventual grep for the process in question. Having been thinking about the problem I tried to create an oneliner to get the process tree in ps ufww format for all processes which has the session id specified by arbitrary process name(s); ending up in following code: ps ufww --sid=$(ps -C apache2 -o sess --no-headers | sort | uniq | grep -v -E '^ +0$' | awk 'NR==1{x=$0;next}NF{x=x","$0};END{gsub(/[[:space:]]*/,"",x);print x}') giving for example following output: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 4157 0.0 0.1 41264 3120 ? Ss Jun11 0:00 /usr/sbin/apache2 -k start www-data 4329 0.0 0.0 41264 1976 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4330 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4331 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4332 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4333 0.0 0.0 41264 2032 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6648 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6654 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6655 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start I do wonder now if anyone has an better idea to solve this issue? Are there anything out there that is easier to "oneline" and gives above or better information? For example I would actually want to have included all childs relative any parent. (uncertain if this should be on SF instead, but felt it was more like an programming question)

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  • How to validate selects / inserts are hitting the right server with MySQL Master/Slave

    - by bwizzy
    I've got a rails app using the master_slave_adapter plugin (http://github.com/mauricio/master_slave_adapter/tree/master) to send all selects to a slave, and all other statements to the master. Replication is setup using Mysql master / slave. I'm trying to validate that all the SQL statements are indeed going to the right place. Selects to the slave (db2), inserts to the master (db1) but I'm not sure how to do it. I've tried using tcpdump on the webservers: sudo /usr/sbin/tcpdump -q -i eth0 dst port 3306 and this is the output for a page request with a ton of selects: 10:32:36.570930 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 0 10:32:36.576805 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 0 10:32:36.577201 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 0 10:32:36.577980 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 86 10:32:36.578186 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 21 10:32:36.578359 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 27 10:32:36.578522 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 5 10:32:36.578741 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 13 10:32:36.579611 IP web2.mydomain.com.57524 > db1.mydomain.com.mysql: tcp 29 10:32:36.588201 IP web2.mydomain.com.45978 > db2.mydomain.com.mysql: tcp 0 10:32:36.588323 IP web2.mydomain.com.45978 > db2.mydomain.com.mysql: tcp 0 10:32:36.588677 IP web2.mydomain.com.45978 > db2.mydomain.com.mysql: tcp 0 10:32:36.588784 IP web2.mydomain.com.45978 > db2.mydomain.com.mysql: tcp 86 It doesn't look like all the selects are going to the slave. Maybe this isn't the right way to test, anyone know a better way?

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  • jQuery document.ready + Asp.Net ContentPlaceholder cause Visual Studio intellisence problems

    - by Konstantin
    Hi! I want to execute JavaScript when document is ready without much syntax overhead. The idea is to use Site.Master and ContentPlaceholder: <script type="text/javascript"> $(document).ready(function () { <asp:ContentPlaceHolder ID="OnReadyScript" runat="server" /> }); </script> and in inherited pages just write plain code: <asp:Content ID="Content3" ContentPlaceHolderID="OnReadyScript" runat="server"> $("#Login").focus(); </asp:Content> It works fine but Visual Studio complains and gives warnings. Warning in master page is Expected expression at the line <asp:ContentPlaceHolder. In inherited pages warning is Could not find 'OnReadyScript' in the current master page or pages. I tried using Writer.Write in master page to render script tag and wrapping code: <% Writer.Write(@"<script type=""text/javascript"">$(document).ready(function () {"); %> <asp:ContentPlaceHolder ID="OnReadyScrit" runat="server" /> <% Writer.Write(@"});"); %> but page rendering terminates after opening script tag is rendered. Html basically ends with <script type="text/javascript"> How can I make it work?

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  • Call asp.net mvc Html Helper within custom html helper with expression parameter

    - by Frank Michael Kraft
    I am trying to write an html helper extension within the asp.net mvc framework. public static MvcHtmlString PlatformNumericTextBoxFor<TModel>(this HtmlHelper instance, TModel model, Expression<Func<TModel,double>> selector) where TModel : TableServiceEntity { var viewModel = new PlatformNumericTextBox(); var func = selector.Compile(); MemberExpression memExpession = (MemberExpression)selector.Body; string name = memExpession.Member.Name; var message = instance.ValidationMessageFor<TModel, double>(selector); viewModel.name = name; viewModel.value = func(model); viewModel.validationMessage = String.Empty; var result = instance.Partial(typeof(PlatformNumericTextBox).Name, viewModel); return result; } The line var message = instance.ValidationMessageFor<TModel, double>(selector); has a syntax error. But I do not understand it. The error is: Fehler 2 "System.Web.Mvc.HtmlHelper" enthält keine Definition für "ValidationMessageFor", und die Überladung der optimalen Erweiterungsmethode "System.Web.Mvc.Html.ValidationExtensions.ValidationMessageFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression)" weist einige ungültige Argumente auf. C:\Projects\WorkstreamPlatform\WorkstreamPlatform_WebRole\Extensions\PlatformHtmlHelpersExtensions.cs 97 27 WorkstreamPlatform_WebRole So according to the message, the parameter is invalid. But the method is actually declared like this: public static MvcHtmlString ValidationMessageFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression); So actually it should work.

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  • Cannot find interface declaration for 'UIResponder'

    - by lfe-eo
    Hi all, I am running into this issue when trying to compile code for an iPhone app that I inherited from a previous developer. I've poked around on a couple forums and it seems like the culprit may be a circular #import somewhere. First - Is there any easy way to find if this is the case/find what files the loop is in? Second - Its definitely possible this isn't the problem. This is the full error (truncated file paths so its easier to view here): In file included from [...]/Frameworks/UIKit.framework/Headers/UIView.h:9, from [...]/Frameworks/UIKit.framework/Headers/UIActivityIndicatorView.h:8, from [...]/Frameworks/UIKit.framework/Headers/UIKit.h:11, from /Users/wbs/Documents/EINetIPhone/EINetIPhone_Prefix.pch:13: [...]/Frameworks/UIKit.framework/Headers/UIResponder.h:15: error: expected ')' before 'UIResponder' [...]/Frameworks/UIKit.framework/Headers/UIResponder.h:17: error: expected '{' before '-' token [...]/Frameworks/UIKit.framework/Headers/UIResponder.h:42: warning: '@end' must appear in an @implementation context [...]/Frameworks/UIKit.framework/Headers/UIResponder.h:51: error: expected ':' before ';' token [...]/Frameworks/UIKit.framework/Headers/UIResponder.h:58: error: cannot find interface declaration for 'UIResponder' As you can see, there are other errors alongside this one. These seem to be simple syntax errors, however, they appear in one of Apple's UIKit files (not my own) so I am seriously doubting that Apple's code is truly producing these errors. I'm stumped as to how to solve this issue. If anyone has any ideas of things I could try or ways/places I could get more info on the problem, I'd really appreciate it. I'm very new to Obj-C and iPhone coding.

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  • OleDBDataAdapter UNPIVOT Query not working with Microsoft.ACE.OLEDB.12.0 DataSource

    - by JayT
    I am reading in an excel file with an OleDBDataAdapter. I am using a select statement to UNPIVOT the data and insert into DataSet. However, the compiler is genereating this error: {"Syntax error in FROM clause."} But the SQL Statement is correct as I have used it in other DB's Here is the code: string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + FileName + ";Extended Properties=\"Excel 12.0 Xml;HDR=" + HDR + ";IMEX=1\""; OleDbConnection conn = new OleDbConnection(strConn); conn.Open(); string SQL = "select Packhouse, Rm, Quantity , Product " + " FROM " + " ( " + " SELECT Date,Packhouse, Rm,[FG XL], [FG L] " + " FROM [" + xlSheet + "] " + " ) Main " + " UNPIVOT " + " ( " + " Quantity FOR Product in ([FG XL], [FG L]) " + " ) Sub " + " WHERE (Date = '2010/03/08') and Quantity <> '0' and Packhouse = 'A' and Rm = '1' "; OleDbDataAdapter adapter = new OleDbDataAdapter(); adapter.SelectCommand = new OleDbCommand(SQL, conn); ds[sequencecounter] = new DataSet(); adapter.Fill(ds[sequencecounter], xlSheet); If I copy and paste the excel data into a DB, then the select query works, but the data presented to me is in excel spreadsheets. If anyone could provide help on this it will be much appreciated. Regards, J

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  • Bit reversal of an integer, ignoring integer size and endianness

    - by ??O?????
    Given an integer typedef: typedef unsigned int TYPE; or typedef unsigned long TYPE; I have the following code to reverse the bits of an integer: TYPE max_bit= (TYPE)-1; void reverse_int_setup() { TYPE bits= (TYPE)max_bit; while (bits <<= 1) max_bit= bits; } TYPE reverse_int(TYPE arg) { TYPE bit_setter= 1, bit_tester= max_bit, result= 0; for (result= 0; bit_tester; bit_tester>>= 1, bit_setter<<= 1) if (arg & bit_tester) result|= bit_setter; return result; } One just needs first to run reverse_int_setup(), which stores an integer with the highest bit turned on, then any call to reverse_int(arg) returns arg with its bits reversed (to be used as a key to a binary tree, taken from an increasing counter, but that's more or less irrelevant). Is there a platform-agnostic way to have in compile-time the correct value for max_int after the call to reverse_int_setup(); Otherwise, is there an algorithm you consider better/leaner than the one I have for reverse_int()? Thanks.

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  • How do I stop inheritance in xaml?

    - by cfouche
    Hi Let's say I have some Control that has been disabled. It contains a bunch of elements, but I want one of those child elements to remain enabled. Something like this: <ContentControl IsEnabled="False"> <Border> <Button Content="Button" IsEnabled="True"/> </Border> </ContentControl> So in this example, the Button's IsEnabled="True" setting gets overridden by its parent. Is there a way of stopping this from happening? This seems like a strange thing to be doing, but I have a situation where, when a Control is disabled and a user mouses down on it, I still want an event to be triggered. I read in WPF Unleashed that wrapping something in a Frame control, "..isolates the content from the rest of the UI [and] properties that would normally be inherited down the element tree stop when they reach the Frame", but wrapping the Button in the example above in a Frame doesn't work. Am I on the wrong track here?

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  • git-p4 submit fails with "Not a valid object name HEAD~261"

    - by Harlan
    I've got a git repository that I'd like to mirror to a Perforce repository. I've downloaded the git-p4 script (the more recent version that doesn't give deprecation warnings), and have been working with that. I've figured out how to pull changes from Perforce, but I'm getting an error when I try to sync changes from the git repo back. Here's what I've done so far: git clone [email protected]:asdf/qwerty.git git-p4 sync //depot/path/to/querty git merge remotes/p4/master (there was a single README file...) So, I've copied the origin to a clean, new director, got a lovely looking merged tree of files, and git status shows I'm up-to-date. But: > git-p4 submit fatal: Not a valid object name HEAD~261 Command failed: git cat-file commit HEAD~261 This thread on the git mailing list seems to be relevant, but I can't figure out what they're doing with all the A, B, and Cs. Could someone please clarify what "Not a valid object name" means, and what I can do to fix the problem? All I want to do is to periodically snapshot the origin/master into Perforce; a full history is not required. Thanks.

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  • zend_form display group inside foreach

    - by Mike
    I want to create a display group generated from foreach() clause output. I can't seem to get the syntax correct. Here's the business logic: for each category row find the associated fees output the category description as a label and the fees as radio buttons then create a display group with the fees as the group elements and the category description as the legend. I then have a style sheet format the elements on the page. and here's the code: foreach ($categoryData as $categoryRow) { $fees[$i] = new Zend_Form_Element_Radio("fees[$i]"); $fees[$i]->setDescription(strval($categoryRow['description'])); foreach ($feeData as $feeRow) { if ($feeRow['categories_idCategory'] == $categoryRow['idCategory']){ $fees[$i] ->addMultiOption($feeRow['idFees'] . '-' . $feeRow['categories_idCategory'], $feeRow['amount'] . '-' . $feeRow['name']); } } $fees[$i]->setRequired(TRUE); $this->addElements(array($fees[$i])); $this->addDisplayGroup($feeRow['name'], 'feeGroup',array('legend' => strval($feeRow['description']))); $i++; } I tried placing the addDisplayGroup() code within the foreach(), but I get the error: Message: No valid elements specified for display group So, my guess is that I'm making some kind of novice mistake that you experts will spot right away. I appreciate your time and attention to this matter.

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  • Asp.net mvc 2 .net 4.0 error when View model type is Tuple with more than 4 items

    - by Bojan
    When I create strongly typed View in Asp.net mvc 2, .net 4.0 with model type Tuple I get error when Tuple have more than 4 items example 1: type of view is Tuple<string, string, string, string> (4-tuple) and everything works fine view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d"); return View(tuple); example 2: type of view is Tuple<string, string, string, string, string> (5-tuple) and I have this error: Compiler Error Message: CS1003: Syntax error, '>' expected view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(tuple); example 3 if my view model is of type dynamic I can use both 4-tuple and 5-tuple and there is no error on page view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d"); return View(model); or view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(model); Even if I have something like Tuple<string, Tuple<string, string, string>, string> 3-tuple and one of the items is also a tuple and sum of items in all tuples is more than 4 I get the same error, Tuple<string, Tuple<string, string>, string> works fine

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  • What is the recommended coding style for PowerShell?

    - by stej
    Is there any recommended coding style how to write PowerShell scripts? It's not about how to structure the code (how many functions, if to use module, ...). It's about 'how to write the code so that it is readable'. In programming languages there are some recommended coding styles (what to indent, how to indent - spaces/tabs, where to make new line, where to put braces,...), but I haven't seen any suggestion for PowerShell. What I'm interested particularly in: How to write parameters function New-XYZItem ( [string] $ItemName , [scriptblock] $definition ) { ... (I see that it's more like 'V1' syntax) or function New-PSClass { param([string] $ClassName ,[scriptblock] $definition )... or (why to add empty attribute?) function New-PSClass { param([Parameter()][string] $ClassName ,[Parameter()][scriptblock] $definition )... or (other formatting I saw maybe in Jaykul's code) function New-PSClass { param( [Parameter()] [string] $ClassName , [Parameter()] [scriptblock] $definition )... or ..? How to write complex pipeline Get-SomeData -param1 abc -param2 xyz | % { $temp1 = $_ 1..100 | % { Process-somehow $temp1 $_ } } | % { Process-Again $_ } | Sort-Object -desc or (name of cmdlet on new line) Get-SomeData -param1 abc -param2 xyz | % { $temp1 = $_ 1..100 | % { Process-somehow $temp1 $_ } } | % { Process-Again $_ } | Sort-Object -desc | and what if there are -begin -process -end params? how to make it the most readable? Get-SomeData -param1 abc -param2 xyz | % -begin { init } -process { Process-somehow2 ... } -end { Process-somehow3 ... } | % -begin { } .... or Get-SomeData -param1 abc -param2 xyz | % ` -begin { init } ` -process { Process-somehow2 ... } ` -end { Process-somehow3 ... } | % -begin { } .... the indentitation is important here and what element is put on new line as well. I have covered only questions that come on my mind very frequently. There are some others, but I'd like to keep this SO question 'short'. Any other suggestions are welcome.

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  • LINQ self referencing query

    - by Chris
    I have the following SQL query: select p1.[id], p1.[useraccountid], p1.[subject], p1.[message], p1.[views], p1.[parentid], case when p2.[created] is null then p1.[created] else p2.[created] end as LastUpdate from forumposts p1 left join ( select parentid, max(created) as [created] from forumposts group by parentid ) p2 on p2.parentid = p1.id where p1.[parentid] is null order by LastUpdate desc Using the following class: public class ForumPost : PersistedObject { public int Views { get; set; } public string Message { get; set; } public string Subject { get; set; } public ForumPost Parent { get; set; } public UserAccount UserAccount { get; set; } public IList<ForumPost> Replies { get; set; } } How would I replicate such a query in LINQ? I've tried several variations, but I seem unable to get the correct join syntax. Is this simply a case of a query that is too complicated for LINQ? Can it be done using nested queries some how? The purpose of the query is to find the most recently updated posts i.e. replying to a post would bump it to the top of the list. Replies are defined by the ParentID column, which is self-referencing.

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  • dumping the source code for an anonymous function

    - by intuited
    I'm working with a lot of anonymous functions, ie functions declared as part of a dictionary, aka "methods". It's getting pretty painful to debug, because I can't tell what function the errors are happening in. Vim's backtraces look like this: Error detected while processing function NamedFunction..2111..2105: line 1: E730: using List as a String This trace shows that the error occurred in the third level down the stack, on the first line of anonymous function #2105. IE NamedFunction called anonymous function #2111, which called anonymous function #2105. NamedFunction is one declared through the normal function NamedFunction() ... endfunction syntax; the others were declared using code like function dict.func() ... endfunction. So obviously I'd like to find out which function has number 2105. Assuming that it's still in scope, it's possible to find out what Dictionary entry references it by dumping all of the dictionary variables that might contain that reference. This is sort of awkward and it's difficult to be systematic about it, though I guess I could code up a function to search through all of the loaded dictionaries for a reference to that function, watching out for circular references. Although to be really thorough, it would have to search not only script-local and global dictionaries, but buffer-local dictionaries as well; is there a way to access another buffer's local variables? Anyway I'm wondering if it's possible to dump the source code for the anonymous function instead. This would be a lot easier and probably more reliable.

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  • dataset - set parent child relations

    - by Night Walker
    Hello all I am trying to set the relations of rows in DataSet and then to show that relation in XTraaTreeList as tree with relations. | --| ----| but i get | | | I am doing this code but i get a view without any relations i get them all in one level. Any idea what i am doing wrong ? this.treeList1.BeginUpdate(); this.dataTable1.Clear(); DataRow dr = this.dataTable1.NewRow(); dr[0] = "father"; dr[1] = true; dr[2] = "ddd"; this.dataTable1.Rows.Add(dr); DataRow dr1 = this.dataTable1.NewRow(); dr1[0] = "son"; dr1[1] = true; dr1[2] = "ddd"; dr1.SetParentRow(dr); this.dataTable1.Rows.Add(dr1); DataRow dr2 = this.dataTable1.NewRow(); this.dataTable1.ParentRelations() dr2[0] = "grand son"; dr2[1] = true; dr2[2] = "ddd"; dr2.SetParentRow(dr1); this.dataTable1.Rows.Add(dr2); this.treeList1.EndUpdate();

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  • Using an existing IQueryable to create a new dynamic IQueryable

    - by dnoxs
    I have a query as follows: var query = from x in context.Employees where (x.Salary > 0 && x.DeptId == 5) || x.DeptId == 2 order by x.Surname select x; The above is the original query and returns let's say 1000 employee entities. I would now like to use the first query to deconstruct it and recreate a new query that would look like this: var query = from x in context.Employees where ((x.Salary > 0 && x.DeptId == 5) || x.DeptId == 2) && (x,i) i % 10 == 0 order by x.Surname select x.Surname; This query would return 100 surnames. The syntax is probably incorrect, but what I need to do is attach an additional where clause and modify the select to a single field. I've been looking into the ExpressionVisitor but I'm not entirely sure how to create a new query based on an existing query. Any guidance would be appreciated. Thanks you.

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  • Algorithm for converting hierarchical flat data (w/ ParentID) into sorted flat list w/ indentation l

    - by eagle
    I have the following structure: MyClass { guid ID guid ParentID string Name } I'd like to create an array which contains the elements in the order they should be displayed in a hierarchy (e.g. according to their "left" values), as well as a hash which maps the guid to the indentation level. For example: ID Name ParentID ------------------------ 1 Cats 2 2 Animal NULL 3 Tiger 1 4 Book NULL 5 Airplane NULL This would essentially produce the following objects: // Array is an array of all the elements sorted by the way you would see them in a fully expanded tree Array[0] = "Airplane" Array[1] = "Animal" Array[2] = "Cats" Array[3] = "Tiger" Array[4] = "Book" // IndentationLevel is a hash of GUIDs to IndentationLevels. IndentationLevel["1"] = 1 IndentationLevel["2"] = 0 IndentationLevel["3"] = 2 IndentationLevel["4"] = 0 IndentationLevel["5"] = 0 For clarity, this is what the hierarchy looks like: Airplane Animal Cats Tiger Book I'd like to iterate through the items the least amount of times possible. I also don't want to create a hierarchical data structure. I'd prefer to use arrays, hashes, stacks, or queues. The two objectives are: Store a hash of the ID to the indentation level. Sort the list that holds all the objects according to their left values. When I get the list of elements, they are in no particular order. Siblings should be ordered by their Name property. Update: This may seem like I haven't tried coming up with a solution myself and simply want others to do the work for me. However, I have tried coming up with three different solutions, and I've gotten stuck on each. One reason might be that I've tried to avoid recursion (maybe wrongly so). I'm not posting the partial solutions I have so far since they are incorrect and may badly influence the solutions of others.

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  • Symfony / Doctrine - How to filter form field by property in related model

    - by Dan
    I have a UserForm class which has a select list populated from a related model (specified by a foreign relationship in the yml) like so: $this->setWidget('report_id', new sfWidgetFormDoctrineChoice(array('model' => $this->getRelatedModelName('Report')))); I'd like to filter the Report objects that come from this relation by one of the Report fields, "active" such that only Reports with active=1 appear in the form. I have a method, ReportTable::GetActiveReports() that performs the appropriate query and returns the filtered reports. So one option is to populate the Widget with the results of that function. Any tips on the syntax to do that? It seems to me the cleaner way is to use the UserFormFilter class to filter the reports by active=1 there. Unfortunately I couldn't find any documentation on how to use form filters (or really what they are), so maybe this is not the right solution. Is a Form Filter the appropriate tool for this job? It seems I should use the Doctrine_Record_Filter_Standard class as defined here: http://www.doctrine-project.org/api/orm/1.2/doctrine/doctrine_record_filter_standard.html But it's not clear to me the appropriate usage. Any guidance would be helpful. Thanks! Dan

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  • Settings variable values in a Moq Callback() call

    - by Adam Driscoll
    I think I may be a bit confused on the syntax of the Moq Callback methods. When I try to do something like this: IFilter filter = new Filter(); List<IFoo> objects = new List<IFoo> { new Foo(), new Foo() }; IQueryable myFilteredFoos = null; mockObject.Setup(m => m.GetByFilter(It.IsAny<IFilter>())).Callback( (IFilter filter) => myFilteredFoos = filter.FilterCollection(objects)).Returns(myFilteredFoos.Cast<IFooBar>()); This throws a exception because myFilteredFoos is null during the Cast<IFooBar>() call. Is this not working as I expect? I would think FilterCollection would be called and then myFilteredFoos would be non-null and allow for the cast. FilterCollection is not capable of returning a null which draws me to the conclusion it is not being called. Also, when I declare myFilteredFoos like this: Queryable myFilteredFoos; The Return call complains that myFilteredFoos may be used before it is initialized.

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  • Trying to grab just absolute links from a webpage using BeautifulSoup

    - by Kevin
    I am reading the contents of a webpage using BeautifulSoup. What I want is to just grab the <a href> that start with http://. I know in beautifulsoup you can search by the attributes. I guess I am just having a syntax issue. I would imagine it would go something like. page = urllib2.urlopen("http://www.linkpages.com") soup = BeautifulSoup(page) for link in soup.findAll('a'): if link['href'].startswith('http://'): print links But that returns: Traceback (most recent call last): File "<stdin>", line 2, in <module> File "C:\Python26\lib\BeautifulSoup.py", line 598, in __getitem__ return self._getAttrMap()[key] KeyError: 'href' Any ideas? Thanks in advance. EDIT This isn't for any site in particular. The script gets the url from the user. So internal link targets would be an issue, that's also why I only want the <'a'> from the pages. If I turn it towards www.reddit.com, it parses the beginning links and it gets to this: <a href="http://www.reddit.com/top/">top</a> <a href="http://www.reddit.com/saved/">saved</a> Traceback (most recent call last): File "<stdin>", line 2, in <module> File "C:\Python26\lib\BeautifulSoup.py", line 598, in __getitem__ return self._getAttrMap()[key] KeyError: 'href'

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  • How to befriend a templated class's constructor?

    - by Kyle
    Why does class A; template<typename T> class B { private: A* a; public: B(); }; class A : public B<int> { private: friend B<int>::B<int>(); int x; }; template<typename T> B<T>::B() { a = new A; a->x = 5; } int main() { return 0; } result in ../src/main.cpp:15: error: invalid use of constructor as a template ../src/main.cpp:15: note: use ‘B::B’ instead of ‘B::class B’ to name the constructor in a qualified name yet changing friend B<int>::B<int>() to friend B<int>::B() results in ../src/main.cpp:15: error: no ‘void B::B()’ member function declared in class ‘B’ while removing the template completely class A; class B { private: A* a; public: B(); }; class A : public B { private: friend B::B(); int x; }; B::B() { a = new A; a->x = 5; } int main() { return 0; } compiles and executes just fine -- despite my IDE saying friend B::B() is invalid syntax?

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  • help with grouping and sorting for TreeView in xaml

    - by danhotb
    I am having problems getting my head around grouping and sorting in xaml and hope someone can get me straightened out! I have creaed an xml file from a tree of files and folders (just like windows explorer) that can be serveral levels deep. I have bound a TreeView control to an xml datasource and it works great! It sorts everything alphabetically but ... I would like it to sort all folders first then all files, rather than folders listed with files, as it does now. the xml : if you load this to a treeviw it will display the two files before the folder because they are first in alpha-order. here is my code: <!-- This will contain the XML-data. --> <XmlDataProvider x:Key="xmlDP" XPath="*"> <x:XData> <Select_Project /> </x:XData> </XmlDataProvider> <!-- This HierarchicalDataTemplate will visualize all XML-nodes --> <HierarchicalDataTemplate DataType="project" ItemsSource ="{Binding}"> <TextBlock Text="{Binding XPath=@name}" /> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType="folder" ItemsSource ="{Binding}"> <TextBlock Text="{Binding XPath=@name}" /> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType="file" ItemsSource ="{Binding}"> <TextBlock Text="{Binding XPath=@name}" /> </HierarchicalDataTemplate> <CollectionViewSource x:Key="projectView" Source="{StaticResource xmlDP}"> <CollectionViewSource.SortDescriptions> <!-- ADD SORT DESCRIPTION HERE --> </CollectionViewSource.SortDescriptions> </CollectionViewSource> <TreeView Margin="11,79.992,18,19.089" Name="tvProject" BorderThickness="1" FontSize="12" FontFamily="Verdana"> <TreeViewItem ItemsSource="{Binding Source={StaticResource xmlDP}, XPath=*}" Header="Project"/> </TreeView>

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