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• Scheme: Detecting duplicate elements in a list

  - by Kyle Krull

  Does R6RS or Chez Scheme v7.9.4 have a library function to check if a list contains duplicate elements? Alternatively, do either have any built in functionality for sets (which dis-allow duplicate elements)? So far, I've only been able to find an example here. The problem with that is that it doesn't appear to actually be part of the Chez Scheme library. Although I could write my own version of this, I'd much rather use a well known, tested, and maintained library function - especially given how basic an operation this is. So a simple "use these built-in functions" or a "no built-in library implements this" will suffice. Thanks!

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• Difference between $().click(fn), $().bind(‘click’,fn), $().live('click',fn) and $().delegate('td',

  - by I Like PHP

  Hello All, i know there are a lot of question similar to this, but i want to know clear difference between all of these jQuery function together on this page with example , so that it will be very helpful for me to understand the mechanism of all of these function. i have also read the reference on jQuery main site, but there is no comparison. Please do not refer any link if there is a part of question belong to that. please describe how all four function exactly works in different manner . and which should be prefer in which situation. note: if there are any other function with same functionality/mechanism , then please share. Thanks a lot

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• POCO Best Practice

  - by Paul Johnson

  All, I have a series of domain objects (project is NHibernate based). Currently as per 'good practice' they define only the business objects, comprising properties and methods specific to each objects function within the domain. However one of the objects has a requirement to send an SMTP message. I have a simple SMTP client class defined in a separate 'Utilities' assembly. In order to use this mail client from within the POCO, I would need to hold a reference to the utilities assembly in the domain. My query is this... Is it a departure from best practice to hold such a reference in a POCO, for the purpose of gaining necessary business functionality. Kind Regards Paul J.

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• Client side caching in GWT

  - by Silfverstrom

  We have a gwt-client, which recieves quite a lot of data from our servers. Logically, i want to cache the data on the client side, sparing the server from unnecessary requests. As of today i have let it up to my models to handle the caching of data, which doesn't scale very well. It's also become a problem since different developers in our team develop their own "caching" functionality, which floods the project with duplications. I'm thinking about how one could implement a "single point of entry", that handles all the caching, leaving the models clueless about how the caching is handled. Does anyone have any experience with client side caching in GWT? Is there a standard approach that can be implemented?

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• jQuery UI Autocomplete - style like a standard <SELECT>

  - by jkohlhepp

  I'm on the verge of starting a new web application that is likely to have need for both standard, simple dropdowns as well as more feature-rich autocomplete controls for longer lists of values, better type ahead behavior, etc. I'm planning on using the jQuery UI Autocomplete widget along with some combobox behavior as detailed here: http://jqueryui.com/demos/autocomplete/#combobox My concern is that "out of the box" the Autocomplete widget looks very different than a standard control. Since is not easy to skin/style, I'm hoping to adjust the Autocomplete to look & feel as close to the as possible, except in the cases where the increased functionality justifies a different L&F. What is the best way to go about reskinning the Autocomplete to look more like a ? Has this already been done somewhere? Should I use jQuery UI theming? Other options?

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• I keep getting a "System InvalidOperationException occurred in System Windows Forms dll" error in VB

  - by Heartrent

  I've just started learning VB.NET with VS 9.0; a small application I'm working on keeps returning an "A first chance exception of type System InvalidOperationException occurred in System Windows Forms dll" error from the Immediate Window. The application has almost zero functionality so far, it consists of a menu strip with: File About |Open |Save |Save As |Quit The only code I have written opens an Open File dialog, a Save As dialog, an About window with background sound and an OK button, and the Quit button which exits. Since there is almost no code for me to search through, I can't understand why there would be an error. The program runs just fine when I'm debugging it too.

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• ContentEditable DIV - disabling drag and drop

  - by sonofdelphi

  Is it possible to disable the drag-and-drop functionality on elements which have the contentEditable attribute set to true. I have the following HTML page. <!DOCTYPE html> <html><meta charset="utf-8"><head><title>ContentEditable</title></head> <body> <div contenteditable="true">This is editable content</div> <span>This is not editable content</span> <img src="bookmark.png" title="Click to do foo" onclick= "foo()"> </span> </body> </html> The main problem I'm facing is that it is possible to drag and drop the image into the DIV and it gets copied (along with the title and the click handler)

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• WPF ItemsViewSource Sorting

  - by niao

  Greetings, I have a problem with sorting ItemsViewSource in WPF. The problem is as follows: My application has a listbox with items, there is a possibility to add new items to this listbox. I have ItemsViewSource which is binded to ListBox ItemsSource - by default some sortDescription is applied (by name) so when new item is added to the listbox it is automatically added to appopriate position in ListBox. I also have a ToggleButton named "No sorting" and what I would like to achieve - when this butt is pressed and new item is added to listbox, the item will be included in the first position in ListBox and additionally previous sorting will be preserved. I can achieve the functionality of adding new item to first position on the list by calling _ItemsViewSource.SortDescriptions.Clear(); but then my previous sorting is not preserved. How can I achieve this and preserve previous sorting? Thanks in advance.

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• django-admin: creating,saving and relating a m2m model

  - by pastylegs

  I have two models: class Production(models.Model): gallery = models.ManyToManyField(Gallery) class Gallery(models.Model): name = models.CharField() I have the m2m relationship in my productions admin, but I want that functionality that when I create a new Production, a default gallery is created and the relationship is registered between the two. So far I can create the default gallery by overwriting the productions save: def save(self, force_insert=False, force_update=False): if not ( Gallery.objects.filter(name__exact="foo").exists() ): g = Gallery(name="foo") g.save() self.gallery.add(g) This creates and saves the model instance (if it doesn't already exist), but I don't know how to register the relationship between the two?

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• How to do a "git export" (like "svn export")

  - by Greg Hewgill

  I've been wondering whether there is a good "git export" solution that creates a copy of a tree without the .git repository directory. There are at least three methods I know of: git clone followed by removing the .git repository directory. git checkout-index alludes to this functionality but starts with "Just read the desired tree into the index..." which I'm not entirely sure how to do. git-export is a third party script that essentially does a git clone into a temporary location followed by rsync --exclude='.git' into the final destination. None of these solutions really strike me as being satisfactory. The closest one to svn export might be option 1, because both those require the target directory to be empty first. But option 2 seems even better, assuming I can figure out what it means to read a tree into the index.

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• Comparison between Tigase, Openfire and any other open-source XMPP servers

  - by John

  I've been looking at these too, both seem to provide fully functional XMPP servers in Java. I know Tigase is designed in a very modular way, not looked at Openfire in as much detail yet. My intended use would be to create a custom IM-based app, using XMPP for convenience rather than to open my server up to talk to other XMPP servers. I'm trying to evaluate my needs based on the following, roughly in order of importance: Documentation coverage & community How easy to plug in own functionality Licensing/cost - I don't plan to release my code Maturity and stability

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• WinRT GridView scrolling setup work differently on mouse/kb and touch

  - by Jay Kannan

  I'm trying to mimic the functionality of the NetFlix app, with a strip on the left that collapses on scrolling, I had to offset the tiles on the GridView a bit to the right so that they can accomodate that behavior. They seem to work alright in keyboard and scroll completely to the right (although I noticed the scrollbar suddenly grows in size when I hit the left boundaries. this totally changes when I use it on touch - I seem to have a limit on the right and the scrolling doesnt scroll past the last 100 pixels or so. how do I take care of this. I'm assuming it is related to the bug here, but didn't seem to solve the problem with that solution there. "Sticky scrolling" issue in WinRT XAML GridView control

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• Google index vs asp.net url routing

  - by vani

  I've made the change from querystring asp.net webforms application to an url routing one. Now I'm trying to let google know that there's a new set of urls to be aware of. The G has indexed 133 out of 179 new urls sent in sitemap.xml, but the site:mistral.hr command returns the old querystring version of the links. This could partly be so because I left the functionality of the old querystring version of the site(for backwards compatibility), and haven't done any 301 redirects(nor do I know how to achieve them in my shared hosting account). The old querystring and the new url routing both point to the same Default.aspx page.

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• Firefox-Addon: Restart and save all current tabs and windows

  - by nokturnal

  Hello guys / gals, First off, this is my first attempt at writing an add-on. That being said, I am attempting to write an add-on that makes some configuration changes and needs to restart Firefox in order to have the changes take effect. I am currently restarting Firefox using the following code: var boot = Components.classes["@mozilla.org/toolkit/app-startup;1"].getService(Components.interfaces.nsIAppStartup); boot.quit(Components.interfaces.nsIAppStartup.eForceQuit|Components.interfaces.nsIAppStartup.eRestart); The problem is, it restarts and opens the browser window(s) to whatever the users homepage is currently set to. I want it to re-open all windows / tabs that were previously open before the restart (similar to what happens when you install a new add-on). Anyone ever messed with this type of functionality before?

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• What should I use - Mako or Django?

  - by mridang

  Hi guys, I'm making a website that mail users when a movie or a pc game has released. It isn't too complex - users can sign up, choose movies/music or a genre and save the settings. When the movie/music is released - it mails the user. Some other functionality too but this is the jist. Now, I've been working with Python for a bit but mainly in the area of console apps. For web: what should I use, the web framework Django or the templating engine Mako? I can't seem to decide between the two. :( Thanks

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• Bulk email notifications API for social networking site

  - by goombaloon

  I'm looking to build a social networking site that notifies followers of a particular user when new content has been posted by that user. Since the hope is that the site will eventually have thousands of users with thousands of followers, I'd prefer to use an outside product/service to send the emails rather than building the functionality into the application and dealing with scalability issues. I've looked at MailChimp and a few others out there. Since my use case isn't really email campaigns, these providers don't seem like the right solution. In fact, MailChimp support confirmed for me that my scenario doesn't fit for them. I'm sure others have run into this same requirement. What are others out there using? I'm using .NET so would like to target something that has a .NET wrapper if possible. Any advice would be most appreciated!

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• NHibernate - Oracle 11g Configuration for XmlType

  - by Daffi

  Im trying to get NHibernate to work with Oracle 11g´s XmlType. The following Exception is thrown: Dialect does not support DbType.Xml My configuration looks like: <?xml version="1.0" encoding="utf-8" ?> <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2"> <session-factory> <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property> <property name="dialect">NHibernate.Dialect.Oracle10gDialect</property> <property name="connection.driver_class">NHibernate.Driver.OracleClientDriver</property> <property name="connection.connection_string">...</property> <property name="show_sql">false</property> </session-factory> </hibernate-configuration> Sure, the XmlType functionality was introduced in 11g but I dont know the configuration Mapping. Anyone here using this feature and willing to show its config? Thanks.

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• Django auth without "auth_*" tables

  - by Travis Jensen

  We would like to use our own tables for user management instead of the Django "auth" tables. We already have database tables that include all of the relevant information our application needs but it isn't in the Django format. We would prefer not to have the information duplicated in two tables. We would like to utilize the auth package, though, as there is some very nice functionality that we don't want to replicate. I realize we could build our own auth backend, but that doesn't, as far as I can tell, remove the need for two sets of tables in this case. Am I correct in assuming that we cannot do this? I have found no docs that discuss how to modify the underlying model that the auth package is using. The backend simply pre-populates the user object that would eventually be saved in the auth tables. Thanks!

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• Python (pdb) - Queueing up commands to execute

  - by kpatelPro

  I am implementing a "breakpoint" system for use in my Python development that will allow me to call a function that, in essence, calls pdb.set_trace(); Some of the functionality that I would like to implement requires me to control pdb from code while I am within a set_trace context. Example: disableList = [] def breakpoint(name=None): def d(): disableList.append(name) #**** #issue 'run' command to pdb so user #does not have to type 'c' #**** if name in disableList: return print "Use d() to disable breakpoint, 'c' to continue" pdb.set_trace(); In the above example, how do I implement the comments demarked by the #**** ? In other parts of this system, I would like to issue an 'up' command, or two sequential 'up' commands without leaving the pdb session (so the user ends up at a pdb prompt but up two levels on the call stack. Thanks!

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• JavaScript tree / treegrid libraries

  - by desau

  I'm looking for a good JavaScript tree / treegrid package. Now -- before you answer: It needs to be able to perform well with lots of nodes. Perhaps 1,000 sibling nodes. It needs to be able to draw to a usable state within 2 or 3 seconds with 1,000 nodes. It doesn't necessarily need to draw all 1,000 nodes at once -- if it supports some sort of "smart rendering" or fake scrolling. Beyond that, column resizing, drag and drop, inline editing would all be nice, although I could probably add that functionality myself. I've already tried dojo's tree and yahoo's YUI treeview. Both are too slow.

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• Selecting an item in a ListView control ( winforms ) while not having the focus

  - by rahulchandran

  I am trying to mimic the functionality of the address book in Outlook So basically a user starts typing in some text in an edit control and a matching ListView Item is selected private void txtSearchText_TextChanged(object sender, EventArgs e) { ListViewItem lvi = this.listViewContacts.FindItemWithText(this.txtSearchText.Text,true, 0); if (lvi != null) { listViewContacts.Items[lvi.Index].Selected = true; listViewContacts.Select(); } } The problem with this is once the listview item gets selected the user cant keep typing into the text Box. Basically I want a way to highlight an item in the listview while still keeping the focus on the edit control This is WINFORMS 2.0

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• Security and authentication in web services

  - by King

  Lets say we have a website that uses a web service for all of its functionality (i.e. retrieving and updating data from/to db), how does the web service authenticate requests? As I understand it, in a traditional java "website" a user provides a username & password, and upon validation a jsessionid is assigned to the user (client browser). Every time the client browser asks the website for something, the site checks for the jsessionid ensuring that the user is registered and authenticated. Is there a web services equivalent of this? If yes, what?

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• Import AppleScript methods in another AppleScript?

  - by DASKAjA

  Is there a way to use defined AppleScript methods in other AppleScripts which reference the original AppleScript with something similar to import (f.e. in PHP)? I wrote a methode to set Skype status and mood-text: on setSkypeStatus(status, mood_text) tell application "System Events" set skypeRunning to count (every process whose name is "Skype") if skypeRunning > 0 then --only set status if skype is running tell application "Skype" set myStatus to "SET USERSTATUS " & status set myMood to "SET PROFILE MOOD_TEXT " & mood_text send command myStatus script name "AppleScript" send command myMood script name "AppleScript" return skypeRunning end tell else return skypeRunning end if end tell end setSkypeStatus now I'm searching for something like import skype_methods.scpt. Is there such a functionality. I can't something related with Google.

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• Configurable UI Plugin frameworks for .NET Compact Framework

  - by Andy White

  Is anyone aware of any frameworks for configuring UIs and possibly plugins for .NET Compact Framework (rich client) applications? Ideally, I'm hoping to find something that would allow you to bascially configure an application's UI and screenflow via an XML file, or some other configuration mechanism, and allow you to plugin different "Action" classes to take care of specific events, etc. in the app. We basically want to have a base application, which allows you to plugin specific/custom functionality to support different customers. I know it's a lot to find, but feel free to throw out any frameworks that might support any or all of these types of things.

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• Find Window At Location Using Carbon And Carbon Problems In 64-Bit Applications

  - by JxXx

  As I said in some questions today I´m looking for the way to get window or windowPart references at a certain location. Although I know I could use Cocoa for this purpose (I don´t know how to do it yet) I prefer (and probably need) to do this using Carbon because the entire application that needs this functionality is written in C++ but I´ve found many problems trying it. Does anyone get a valid windowPtr or windowRef using one of the following functions? FindWindow, MacFindWindow, HIWindowFindAtLocation or FindWindowOfClass I always get 0 as the windowRef or windowPtr that I´m looking for. What I´m doing wrong? Any ideas? It´s true that now if you want to create a 64-bit application for Mac OS X, you need to use Cocoa to implement its user interface because some APIs commonly used by Carbon applications are not available in 64-bit applications? Thank you. JxXx

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