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  • Using string constants in implicit conversion

    - by kornelijepetak
    Consider the following code: public class TextType { public TextType(String text) { underlyingString = text; } public static implicit operator String(TextType text) { return text.underlyingString; } private String underlyingString; } TextType text = new TextType("Something"); String str = text; // This is OK. But I want to be able do the following, if possible. TextType textFromStringConstant = "SomeOtherText"; I can't extend the String class with the TextType implicit operator overload, but is there any way to assign a literal string to another class (which is handled by a method or something)? String is a reference type so when they developed C# they obviously had to use some way to get a string literal to the class. I just hope it's not hardcoded into the language.

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  • How to list directory hierarchy in PyGTK treeview widget?

    - by lyrae
    I am trying to generate a hierarchical directory listing in pyGTK. Currently, I have this following directory tree: /root folderA - subdirA - subA.py - a.py folderB - b.py I have written a function that -almost- seem to work: def go(root, piter = None): for filename in os.listdir(root): isdir = os.path.isdir(os.path.join(root, filename)) piter = self.treestore.append(piter, [filename]) if isdir == True: go(os.path.join(root, filename), piter) This is what i get when i run the app: I also think my function is inefficient and that i should be using os.walk(), since it already exists for such purpose. How can I, and what is the proper/most efficient way of generating a directory tree with pyGTK?

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  • Apache is running but there is no page displayed

    - by Michael Ozeryansky
    I am on a Mac OSX and I am using the built in PHP and Apache2. I have been setting up MySQL and finally when I got MySQL working my local site won't display. Do note that I did have the web server running and delivering PHP enabled pages, just no database connection. But my question is not about MySQL. I have changed various settings in the 'http.conf' file, and I have the line: '127.0.0.1 localhost' in my hosts file. I also have other alias' pointing to 127.0.0.1. I have checked everything I could about Apache and I have made sure that any message in the error_log is ok. I currently have my errorLevel set to debug, so I get all the messages. At this point (HOURS of self fixing) I think I need help. What can I provide for someone to figure this out with me. Thanks.

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  • How to access the jQuery event object in a Seaside callback

    - by Mef
    Basically, I want to translate the following into Seaside Smalltalk: $(".myDiv").bind('click', function(e) { console.log(e); }); Besides that I don't want to console.log the event, but access it in my ajax callback. The most promising approach seemed to be something like html div onClick: (html jQuery ajax callback: [:v | self halt] value: (???); with: 'Foo'. But I couldn't find any way to access the event that caused the callback. Intuitively, I would try html jQuery this event for the ??? part, but the Seaside jQuery wrapper doesn't know any message that comes close to event. Any help is appreciated. There has to be away to access the event data...

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  • How to associate node with products in Drupal/Ubercart

    - by henrijs.seso
    I am looking for a way to allow users to add node reference to each product or whole cart @ checkout. I am making web site where users can buy items and then receive them on board flight. Products are fixed, but user needs to tell for which flight he is buying items. Flights are nodes and users has flagged these nodes so there is no problem making View with users flagged flight nodes. How would I associate one of these nodes with purchase? Nodereference from CCK would be cool, but checkout is probably not node. Any suggestions for approach?

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  • Is an object in objective-c EVER created without going through alloc?

    - by Jared P
    Hi, I know that there are functions in the objective-c runtime that allow you to create objects directly, such as class_createInstance. What I would like to know is if anything actually uses these functions other than the root classes' (NSObject) alloc method. I think things like KVC bindings might, but those aren't present on the iPhone OS (to my knowledge, correct me if I'm wrong), so is there anything that would do this? In case you're wondering/it matters, I'm looking to allocate the size of an instance in a way that circumvents the objc runtime by declaring no ivars on a class, but overriding the +alloc method and calling class_createInstance(self, numberofbytesofmyivars). Thanks

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  • Why can .NET not have memory leaks?

    - by Dinah
    Ignoring unsafe code, .NET cannot have memory leaks. I've read this endlessly from many experts and I believe it. However, I do not understand why this is so. It is my understanding that the framework itself is written in C++ and C++ is susceptible to memory leaks. Is the underlying framework so well-written, that it absolutely does not have any possibility of internal memory leaks? Is there something within the framework's code that self-manages and even cures its own would-be memory leaks? Is the answer something else that I haven't considered?

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  • Background settings for a JDesktopPane

    - by EricR
    I'm using a self-made DesktopPaneUI for a JDesktopPane, I've written the proper methods for the class, and I'm running into trouble. When I resize the JDesktopPane, the background image doesn't resize with the frame. The image appears to be clipped at the size it was when the window initially opened. I'm giving it an image larger than the window, and I'm still having this problem. Here's my method call inside the constructor of my desktopUI class. super(); this.background = javax.imageio.ImageIO.read(new File(fileName)); Is there a way I can change my main class where I set the UI, or the myDesktopPaneUI class such that the background still fills the window when the JDesktopPane changes size? setUI(new myDesktopPaneUI("media/bg.jpg"));

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  • Why isn't this MVC Html Helper extension method working?

    - by Blankman
    My base controller looks like: public abstract MyBaseMasterController<TMasterViewModel> : Controller { } public MyMasterController: MyBaseMasterController<SomeThingModel> { } Extension method: public static string DoSomething(this HtmlHelper htmlHelper) { StringBuilder sb = new StringBuilder(); sb.Append("var cnwglobals = {"); var controller = htmlHelper.ViewContext.Controller as MyMasterController; if (controller == null) { } return sb.ToString(); } In my view I do: <% Html.Dosomething(); %> I get an error: CS1061: 'System.Web.Mvc.HtmlHelper<Blah.Models.ViewModelForMasterWrapper<Blah.Models.MasterViewModel>>' does not contain a definition for 'DoSomething' and no extension method 'DoSomething' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<Blah.Models.ViewModelForMasterWrapper<Blah.Models.MasterViewModel>>' could be found (are you missing a using directive or an assembly reference?)

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  • castle IOC - resolving circular references

    - by Frederik
    Hi quick question for my MVP implementation: currently I have the code below, in which both the presenter and view are resolved via the container. Then the presenter calls View.Init to pass himself to the view. I was wondering however if there is a way to let the container fix my circular reference (view - presenter, presenter - view). class Presenter : IPresenter { private View _view; public Presenter(IView view, ...){ _view = view; _view.Init(this) } } class View : IView { private IPresenter _presenter; public void Init(IPresenter presenter){ _presenter = presenter; } } Kind regards Frederik

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  • How To: Referencing LAPACK library from FORTRAN 95 in Cygwin

    - by cholmgreen
    I have a FORTRAN 95 program that needs to make some calls to the LAPACK library. I recently found out that Cygwin because it can install LAPACK as an extra option. Well, LAPACK exists in the /lib/lapack/ directory as "cyglapack.dll". Having only a very informal training in Fortran programming, I have no idea how to reference a .dll library as opposed to a .mod module. Any suggestions or directions to articles answering my question are GREATLY appreciated! (P.S. I did search first.. I don't think I know the proper terms to get a useful article.)

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  • Change a subform's recordsource from another subform in Access

    - by Dkellygb
    I am using MS Access 2003 and I have a form with two subforms (subform1 and subform2) which are not nested. They both display tabular data on them so they cannot be nested. I would like to change the recordsource on subform2 based on a value in the current record on subform1. I have tried to put the code in the oncurrent event of subform1 but I cannot seem to refer to the recordsource in subform2 from subform1. From subform1 I have tried me.parent!subform2.form.recordsource but I get a runtime error ‘2455’ You have entered an expression that has an invalid reference to the property form/report. Any ideas?

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  • Need advice on organizing two WPF applications within one Visual Studio solution

    - by Tim
    I have a WPF application (KaleidoscopeApplication) organized as follows: Solution (6 projects) Cryptography (DLL) Rfid (DLL) KaleidoscopeApplication (buildable "startup project") Basically, KaleidoscopeApplication contains a bunch of resources (sounds, images, etc) and your standard WPF junk (App.xaml, App.xaml.cs, other xaml and code). I need to create a new application that is very similar to Kaleidoscope, but I'm not sure of the best way to organize. This new app will need access to much of the same code and resources as Kaleidoscope. Preferably, I would like to create a new project in the solution, then simply use the "set as startup project" to pick which app I want to build. However, will I be able to access (share) the Resources folder of Kaleidoscope? I know I will be able to access much of the code if I simply add a reference to the project and include a "using Kaleidoscope". But the resources I'm not so sure about. Is this the right way to organize or am I asking for trouble in the future? Thanks in advance!

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  • browser ctrl-f find and non-visible text

    - by David Pilling
    Can the browser feature of contrl+F to find text be integrated with text in popup windows. I'd like to have some scientific reference information given when someone hovers over a species name in a web page. Generating the popup, tooltip style text is no problem, the problem is that anyone using Ctrl+F won't be able to find it, or if I position the text out of view when not required, it will be found but be invisible. The same sort of effect applies to "accordion" style expanding text areas. I'm looking for some sort of event generated when find is highlighting a result.

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  • jQuery hoverIntent not working, but hover does

    - by kylex
    I have the following code: $(document).ready(function(){ $(".yearInner").hide(); $(".year", this).hover( function () { $(".yearInner", this).slideToggle(); } ); }); It hides the div with class yearInner, and then when the containing div with class year is hovered over, the yearInner div toggles on. Works fine, put I'd like to use the hoverIntent plug-in instead of hover. Doesn't work at all with hoverIntent. Suggestions? Div structure for reference: <div class="year"> 2009 <div class="yearInner"> More Info... </div> </div> <div class="year"> 2008 <div class="yearInner"> More Info... </div> </div>

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  • Combining deflate and minify - am i creating overhead?

    - by Mark Nolan
    I minify my css and js files on the fly with google.codes minify. I have also set my .htaccess to use deflate on all my css and js files - the reason beeing some js files (like shadowbox and tinymce) reference to other js files in the code. So i'm compressing with apache deflate and also minify compresses some js and css files with gzip - am i creating overhead by doing this - first gzipping (minify) and then zlib (deflate) will run through again. Or will apache deflate ignore the already gzipped files having the attributes set by minify in the headers. Anyone have any experiences with this?

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  • Dissapearing object function??

    - by WmasterJ
    Is there a reason for object functions to be unset or deleted or simply not applied for any reason at all that isn't intentional? I am maintaining someone elses code and gone through it many times. I use Google Chromes awesome debuger and also TextMate. These help me find the origin of error relatively fast. The problem I have now is that i have an object: types. This object conatains...types. And these types have functions and other variables attached to them. For some reason in the middle of the code, this type has been passed by reference millions of times probably. When it comes to a certain part of the code parts of it, seem to have dissapeared. Puff! And it's gone..! Anyone have a clue (other than it being removed somewhere else earlier in the code, I'm already looking for that)

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  • stopping a cherrypy server over http

    - by d.c
    I have a cherrypy app that I'm controlling over http with a wxpython ui. I want to kill the server when the ui closes, but I don't know how to do that. Right now I'm just doing a sys.exit() on the window close event but thats resulting in Traceback (most recent call last): File "ui.py", line 67, in exitevent urllib.urlopen("http://"+server+"/?sigkill=1") File "c:\python26\lib\urllib.py", line 87, in urlopen return opener.open(url) File "c:\python26\lib\urllib.py", line 206, in open return getattr(self, name)(url) File "c:\python26\lib\urllib.py", line 354, in open_http 'got a bad status line', None) IOError: ('http protocol error', 0, 'got a bad status line', None) is that because I'm not stopping cherrypy properly?

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  • Regular expression in BASH

    - by Ryan
    Hello everyone, I was hoping someone could answer my quick question as I am going nuts! I have recently started learning regular expressions in my Java programming however am a little confused how to get certain features to work correctly directly in BASH. For example, the following code is not working as I think it should. echo 2222 | grep '2\{2\}' I am expecting it to return: 22 I have tried variations of it including: echo 2222 | grep '2{2}' echo 2222 | grep -P '2\{2\}' echo 2222 | grep -E '2\{2\}' However I am completely out of ideas. I'm sure this is a simple parameter / syntax fix and would love some help! P.S I've done tons of googling and every reference I find does not work in BASH; regex's can run on so many different platforms and engines =/

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  • What is a NullReferenceException in .NET?

    - by John Saunders
    (I'm creating this separate question and answer because every question we get on NullReferenceException is really the same) I have some code and when it executes, it throws a NullReferenceException, saying, "Object reference not set to an instance of an object.". What does this mean, and what can I do about it? Note again, that this is a question meant to focus answers to the canonical "what is a NullReferenceException and why did I get one" question. I do know what a NullReferenceException is, as my answer below demonstrates.

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  • calling a function or communicating from one browser window to another using Jquery / javascript

    - by Shanon
    Hello, I am designing a web site that plays music. The music player itself will be in a separate window along with the now playing list. I want to be able to refresh the now playing list when a new song is added to it from the main window. Essentially I need to figure out how to communicate between the two windows. I was only able to find one plugin on line that defines the player page as a child of the main page but then this reference would be lost after the parent page i.e my main page was refreshed. So this was not very useful to me and I'm kinda lost atm. Any help is greatly appreciated PS: here is the link to that plugin (http://www.sfpeter.com/2008/03/13/communication-between-browser-windows-with-jquery-my-new-plugin/)

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  • Jetty 6 to Jetty 7 upgrade: what happened to system property "jetty.lib"? (-Djetty.lib=my/lib/dir)

    - by StaxMan
    Looks like Jetty team wanted to do some spring cleaning between versions 6 and 7, and it looks as if one useful system property, "jetty.lib" either does not exist, does not work, or just has changed in an unspecified way so as to make my jetty 6 set up work easily with Jetty 7. I tried searching through Jetty 7 docs, but about the only reference I saw was that "some commonly used properties (such as "jetty.home") still work as they used to". So, what am I missing? I really would want to avoid messing with things within Jetty distribution dirs (otherwise I could -- and maybe I have to? -- just use JETTY_BASE/lib/ext), and that's what "jetty.lib" was useful for.

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  • iphone Core Data Unresolved error while saving

    - by Ahmed Kotb
    I am getting a strange error message from the core data when trying to save but the problem that the error is not reproducible ( it appears at different times when doing different tasks) the error message: Unresolved error Domain=NSCocoaErrorDomain Code=1560 UserInfo=0x14f5480 "Operation could not be completed. (Cocoa error 1560.)", { NSDetailedErrors = ( Error Domain=NSCocoaErrorDomain Code=1570 UserInfo=0x5406d70 "Operation could not be completed. (Cocoa error 1570.)", Error Domain=NSCocoaErrorDomain Code=1570 UserInfo=0x14f9be0 "Operation could not be completed. (Cocoa error 1570.)" ); } and the method that generates the error is: - (IBAction)saveAction:(id)sender { NSError *error; if (![[self managedObjectContext] save:&error]) { // Handle error NSLog(@"Unresolved error %@, %@, %@", error, [error userInfo],[error localizedDescription]); exit(-1); // Fail } } any idea for the reason of this message ? giving that it appears at random times

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  • Creating a menu using xslt for Umbraco

    - by rob_g
    I've created a menu in umbraco using XSLT. The menu is using the usual ul and li elements and I'm displaying only the first level of the menu. The aim is to create a menu that expands to show the sub menu when I click a parent node (in the top level). I am after the xslt I would need to expose the sub menu when clicked. I think I would need to make use of ancestor-or-self to detect the current menu and parent menu and display them and also the $currentPage variable. I have the following xslt: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxml="urn:schemas-microsoft-com:xslt" xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets" xmlns:tagsLib="urn:tagsLib" xmlns:urlLib="urn:urlLib" exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets tagsLib urlLib "> <xsl:output method="xml" omit-xml-declaration="yes"/> <xsl:param name="currentPage"/> <xsl:template match="/"> <div id="kb-categories"> <h3>Categories</h3> <xsl:call-template name="drawNodes"> <xsl:with-param name="parent" select="$currentPage/ancestor-or-self::node [@level=1]"/> </xsl:call-template> </div> </xsl:template> <xsl:template name="drawNodes"> <xsl:param name="parent"/> <xsl:if test="(umbraco.library:IsProtected($parent/@id, $parent/@path) = 0 or (umbraco.library:IsProtected($parent/@id, $parent/@path) = 1)) and $parent/@level = 1"> <ul class="kb-menuLevel1" > <xsl:for-each select="$parent/node [string(./data [@alias='showInMenu']) = 1]"> <li> <a href="/kb{umbraco.library:NiceUrl(@id)}"> <xsl:value-of select="@nodeName"/> </a> <xsl:variable name="level" select="@level" /> <xsl:if test="(count(./node [string(./data [@alias='showInMenu']) = '1']) &gt; 0)"> <xsl:call-template name="drawNodes"> <xsl:with-param name="parent" select="."/> </xsl:call-template> </xsl:if> </li> </xsl:for-each> </ul> </xsl:if> <xsl:if test="(umbraco.library:IsProtected($parent/@id, $parent/@path) = 0 or (umbraco.library:IsProtected($parent/@id, $parent/@path) = 1)) and $parent/@level &gt; 1"> <ul class="kb-menuLevel{@level}" style="display: none;"> <xsl:for-each select="$parent/node [string(./data [@alias='showInMenu']) = 1]"> <li> <a href="/kb{umbraco.library:NiceUrl(@id)}"> <xsl:value-of select="@nodeName"/> </a> <xsl:variable name="level" select="@level" /> <xsl:if test="(count(./node [string(./data [@alias='showInMenu']) = '1']) &gt; 0)"> <xsl:call-template name="drawNodes"> <xsl:with-param name="parent" select="."/> </xsl:call-template> </xsl:if> </li> </xsl:for-each> </ul> </xsl:if> </xsl:template> </xsl:stylesheet> I suspect this could be improved using apply-templates, but I'm not yet up to speed with that (this being only the second day of my learning xslt). My menu: Item 1 Item 2 Item 3 Item 4 when I click on Item 2 I want to see it's child menu too: Item 1 Item 2 -- Item 2.1 -- Item 2.2 Item 3 Item 4 and so on down the nested menu.

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  • Trying to Nullify Django model fields with method where model and fields are parameters

    - by Johnny4000
    I'm trying to write a method like the below where a list of fields (a subset of all the fields) is passed in as a parameter and has their column values set to null. I would be happy of I could get a method with just the fields as a parameter like below, but having the model as a parameter would be even better. from my_project.my_app.models import MyModel def nullify_columns (self, null_fields): field_names = MyModel._meta.get_all_field_names() for field in field_names: if field in null_fields: # The below line does not work because I'm not sure how to # dynamically assign the field name. MyModel.objects.all().update( (MyModel.get_field(field).column) = None) Right now I have something like if 'column1' in list_of_fields: MyModel.objects.all().update(column1 = None) if 'column2' in list_of_fields: MyModel.objects.all().update(column2 = None) etc. which is horrible, but works.

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