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Quadratic Bezier Curve: Calculate Tangent

- by stefan.at.wpf

I have a quadratic bezier curve and I want to calculate the slope of the tangent in a given point. For example, let it be the middlepoint of the quadratic bezier curve, therefore t=0.5 (please see the link below for a picture of this). I've calculated the first derivative of the formula for the quadratic bezier curve; however I get 400 as value for the slope, though it should be 0. Maybe I'm using the first derivative in a wrong way? I know I could also calculate the tangents using trigonometric functions; however I'd like to do it using the first derivative, shouldn't this be possible? Thanks for any hint! For clarification / please note: I'm interested in a general way to get the slope in a arbitrary given point on a quadratic bezier curve, not only to get the tangent in the start- and end point. A picture of my problem including the text above: http://cid-0432ee4cfe9c26a0.skydrive.live.com/self.aspx/%c3%96ffentlich/Quadratic%20Bezier%20Curve.pdf Thank you very much for any hint!

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DWM and painting unresponsive apps

- by Doug Kavendek

In Vista and later, if an app becomes unresponsive, the Desktop Window Manager is able to handle redrawing it when necessary (move a window over it, drag it around, etc.) because it has kept a pixel buffer for it. Windows also tries to detect when an app has become unresponsive after some timeout, and tries to make the best of the situation -- I believe it dims out the window, adds "Not Responding" to its title bar, and perhaps some other effects. Now, we have a skinned app that uses window regions and layered windows, and it doesn't play well with these effects. We've been developing on XP, but have noticed a strange effect when testing on Vista. At some points the app may spend a few moments on some calculation or callback, and if it passes the unresponsive threshold (I've read that it's a five second timeout, but I cannot find a link), a strange graphical problem occurs: any pixels that would be 100% transparent due to the window regions turn black, which effectively makes the window rectangular again, with a black background. There seem to be other anomalies, with the original window's pixels being shifted a bit in some child dialogs. I am working on reducing such delays (ideally Windows will never need to step in like this), and trying to maintain responsiveness while it's busy, but I'd still like to figure out what is causing it to render like that, as I can't guarantee I can eliminate all delays. Basically, I just would like to know what Windows is doing when this happens, and how I can make my app behave properly with it. Skinned apps have to still work on Vista and later, so I need to figure out what I'm doing that's non-standard. I don't even know exactly how to look for information into how Windows now handles unresponsive apps, as my searches only return people having issues with apps that are unresponsive, or very rudimentary explanations of what the DWM does with such apps. Heck I'm not even 100% sure it's the DWM responsible, but it seems likely. Any potential leads? Photo of problem; screen shots won't capture the effect (note that the white dialog's buffer is shifted -- it is shifted exactly by the distance it has been offset from the main (blue) window):

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emberjs on symfony2 dev enviroment dont work propertly

- by rkmax

I've builded a app with symfony2 the app expose an REST Api. now i build a simple client for consuming app.coffee - app.js App = Em.Application.create ready: -> @.entradas.load() Entrada: Em.Object.extend() entradas: Em.ArrayController.create content: [] load: -> url = 'http://localhost/api/1/entrada' me = @ $.ajax( url: url, method: 'GET', success: (data) -> me.set('content', []) for entrada in data.data.objects me.pushObject DBPlus.Entrada.create(entrada) ) MyBundle:Home:index.html.twig <script type="text/x-handlebars" src="{{ asset('js/templates/entradas.hbs') }}"></script> <script src="{{ asset('js/libs/jquery-1.7.2.min.js') }}"></script> <script src="{{ asset('js/libs/handlebars-1.0.0.beta.6.js') }}"></script> <script src="{{ asset('js/libs/ember-1.0.pre.min.js') }}"></script> <script src="{{ asset('js/app.js') }}"></script> the problem here is when i run on dev enviroment and link the template like <script type="text/x-handlebars" src="{{...}}"> the app dont work, nothing show but works fine over prod enviroment. he only way that works on dev enviroment is inline template MyBundle:Home:index.html.twig <script type="text/x-handlebars"> {% raw %} <ul class="entradas"> {{#each App.entradas}} <li class="entrada">{{nombre}}</li> {{/each}} </ul> {% endraw %} </script> can explain why this behavoir? Note: I disabled the debug profiler toolbar, and nothing

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Frame Accurate Browser Launchable Video Player ... ?

- by cliftonc

I have a requirement where I need to enable playback (full screen) of a h.264 MPEG4 (thanks for the correction!) video from a local network, launchable from a browser link on a Windows workstation, and be frame accurate. By frame accurate I mean that I need to be able to scrub through the video in the same way you would with a vtr, stop at a frame, and then move backwards and forwards frame by frame (it is for a very specific compliance requirement where have to be able to check every frame if there is something that is potentially against broadcasting guidelines). The application itself is used to capture notes while viewing the material, so the end model is for a dual monitor workstation, with a web form in one, the video playing full screen in the second (no issue launching the video and manually having to move it to the second screen), and then the user controls the video via keyboard shortcuts or a jog shuttle. I have looked at QT, but the java bindings seem to be dead or nearly so, flash isn't frame accurate, VLC given its streaming heritage seems to be only able to move forward by a frame and not backwards, and all I have left are commercial offerings that in my experience are difficult and expensive to change. Any ideas of where I should look or alternative options? Any advice appreciated!

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Using Windows Integrated Auth & Anonymous during redirect on IIS7

- by James Black

I have an application we bought that I need to integrate, and it uses jakarta connection to get to the application from IIS. So, the basic operation is: user goes to the url Gets redirected to the application SSO is enabled, so redirected back to IIS for fetching of domain credentials Back to application If username is blank show login page, else let user in. This is a simplification of all the steps, but the basic idea is here. My difficulty is that I need both Windows Integrated Auth and anonymous on, as some users won't have credentials, and need to be prompted for a username/password. I have looked at: http://stackoverflow.com/questions/2068546/iis-windows-authentication-before-anonymous already, but the user doesn't get to click on a link to decide. The application goes back to IIS looking for login.aspx and from there I want to either get their domain credentials or pass back to the application empty strings to signify that there are no credentials. It seems this isn't going to be possible though as if anonymous is on it doesn't make the 401 request so the credentials aren't passed. If I can't get this to work with just using an ASP page, could it be done using an ISAPI filter, or a module?

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Running Magento for multiple clients - single Installaton vs. multiple installations

- by Chris Hopkins

Hi There I am looking to set-up a Magento (Community Edition) installation for multiple clients and have researched the matter for a few days now. I can see that the Enterprise Edition has what I need in it, but surprisingly I am not willing to shell out the $12,000 odd yearly subscription. It seems there are a few options available to be but I am worried about the performance I will get out of the various options. Option 1) Single install using AITOC advanced permissions module So this is really what I am after; one installation so that I can update my core files all at the same time and also manage all my store users from one place. The problems here are that I don't know anything about the reliability of this extra product and that I have to pay a bit extra. I am also worried that if I have 10 stores running off this one installation it might all slow down so much and keel over as I have heard allot about Magento's slowness. Module Link: http://www.aitoc.com/en/magentomods_advanced_permissions.html Option 2) Multiple installations of Magento on one server for each shop So here I have 10 Magento installations on one server all running happily away not using any extra money, but I now have 10 separate stores to update and maintain which could be annoying. Also I haven't been able to find a whole lot of other people using this method and when I have they are usually asking how to stop their servers from dying. So this route seems like it could be even worse on my server as I will have more going on on my server but if my server could take it each Magento installation would be simpler and less likely to slow down due to each one having to run 10 shops on its own? Option 3) Use lots of servers and lots of Magento installations I just so do not want to do this. Option 4) Buy Magento Enterprise I do not have the money to do this. So which route is less likely to blow up my server? And does anyone have experience with this holy grail of a module? Thanks for reading and thanks in advance for any help - Chris Hopkins

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What programming languages do the top tier Universities teach?

- by Simucal

I'm constantly being inundated with articles and people talking about how most of today's Universities are nothing more than Java vocational schools churning out mediocre programmer after mediocre programmer. Our very own Joel Spolsky has his famous article, "The Perils of Java Schools." Similarly, Alan Kay, a famous Computer Scientist (and SO member) has said this in the past: "I fear — as far as I can tell — that most undergraduate degrees in computer science these days are basically Java vocational training." - Alan Kay (link) If the languages being taught by the schools are considered such a contributing factor to the quality of the school's program then I'm curious what languages do the "top-tier" computer science schools teach (MIT, Carnegie Mellon, Stanford, etc)? If the average school is performing so poorly due in large part the languages (or lack of) that they teach then what languages do the supposed "good" cs programs teach that differentiate them? If you can, provide the name of the school you attended, followed by a list of the languages they use throughout their coursework. Edit: Shog-9 asks why I don't get this information directly from the schools websites themselves. I would, but many schools websites don't discuss the languages they use in their class descriptions. Quite a few will say, "using high-level languages we will...", without elaborating on which languages they use. So, we should be able to get a pretty accurate list of languages taught at various well known institutions from the various SO members who have attended at them.

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Java/BlackBerry build error overriding too many classes

- by behrk2

Hey everyone, Has anyone ever heard of overriding too many classes in Java? Perhaps this issue is just related to BlackBerry development, but I was wondering if it is an issue in Java, too. Let's say I have the following: LabelField lblTitle = new LabelField(title) { protected void paint(Graphics graphics) { graphics.setColor(0x00FFFFFF); graphics.clear(); super.paint(graphics); } }; LabelField lblSubTitle = new LabelField(releaseYear + ", " + rating) { protected void paint(Graphics graphics) { graphics.setColor(0x00FFFFFF); graphics.clear(); super.paint(graphics); } }; This code works. However, I've noticed that by overriding the paint() method multiple times in many different classes throughout my project, I receive the error: I/O Error: Cannot run program "jar": CreateProcess error=2, The system cannot find the file specified My only solution thus far is to clean up my GUI code...minimize it and reuse it. Perhaps its good that this happened so I can be less careless about creating GUI code all over my classes. Anyways, I was just wondering if anyone has heard of this before. If you are interested in reading more about the issue I have been facing, check out the following link: BlackBerry Java Development Forums

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IE6 background-position(?) issue

- by turezky

I apply to stackoverflow as my last resort. I got this ie6 bug while using the image at the background of the link. It seems that ie6 scrolls the background. How can I avoid it? At some width it shows like this: And at some other it shows like that: IE7 & FF show this just like I expect: The links are placed inside the div which is floating to the right. <a href="/tr" class="menuLink" style="background-image:url(/img/tr.png);">TR</a> <a href="/eng" class="menuLink" style="background-image:url(/img/eng.png); margin-right:30px;">ENG</a> <a href="/logout" class="menuLink" style="background-image:url(/img/logout.png);"><?=$ui["exit"];?></a> .menuLink { font-family:"Tahoma"; font-size:11px; color:#003300; text-decoration:underline; font-weight: bold; background-position:0% 50%; background-repeat:no-repeat; } .menuLink:hover { font-size:11px; color:#047307; text-decoration:underline; font-weight: bold; } Any hints how can I avoid this?

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Jquery Livesearch with quicksilver plugin to include not just the <li>s

- by 133794m3r

Ok, what i'm trying to do here is to make the exact code found here here ordered list and make it so that it doesn't just not work when i try to add additional elements into the list. Also i'm planning on using the more effecient one linked to at the end but i cannot put it here so you'll have to find that link on your own sadly. Since i'm trying to use this for a knowledge base page i want to allow people to be able to search through the items on the page and go to the proper part(ie loading it into the viewing area) but it's not letting me even include a simple anchor in there. if there is anyway to do something similar or to edit it so that it'll include everything within the <li> that'd be great. I don't know if anyone out there has done something like this before, but if they have and wouldn't mind sharing the code with me i'd be extremely happy. If no one has but does know how to make it include everything within the <li> including text also a great thing to have. I imagine that i won't be the only person out there in this world with my exact query.

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How do I get syncdb db_table and app_label to play nicely together

- by Chris Heisel

I've got a model that looks something like this: class HeiselFoo(models.Model): title = models.CharField(max_length=250) class Meta: """ Meta """ app_label = "Foos" db_table = u"medley_heiselfoo_heiselfoo" And whenever I run my test suite, I get an error because Django isn't creating the tables for that model. It appears to be an interaction between app_label and db_table -- as the test suite runs normally if db_table is set, but app_label isn't. Here's a link to the full source code: http://github.com/cmheisel/heiselfoo Here's the traceback from the test suite: E ====================================================================== ERROR: test_truth (heiselfoo.tests.HeiselFooTests) ---------------------------------------------------------------------- Traceback (most recent call last): File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/heiselfoo/tests.py", line 10, in test_truth f.save() File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/base.py", line 434, in save self.save_base(using=using, force_insert=force_insert, force_update=force_update) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/base.py", line 527, in save_base result = manager._insert(values, return_id=update_pk, using=using) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/manager.py", line 195, in _insert return insert_query(self.model, values, **kwargs) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/query.py", line 1479, in insert_query return query.get_compiler(using=using).execute_sql(return_id) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 783, in execute_sql cursor = super(SQLInsertCompiler, self).execute_sql(None) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 727, in execute_sql cursor.execute(sql, params) File "/Users/chris/Code/heiselfoo/ve/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py", line 200, in execute return Database.Cursor.execute(self, query, params) DatabaseError: no such table: medley_heiselfoo_heiselfoo ---------------------------------------------------------------------- Ran 1 test in 0.004s FAILED (errors=1) Creating test database 'default'... No fixtures found. medley_heiselfoo_heiselfoo Destroying test database 'default'...

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Can I add round cornres to HtmlPanelGrid in code or in page? If yes - how?

- by Elena

Hi all! I have a task - add round corners to HtmlPanelGrid. Now I am trying to do it with css (using 4 images for each corner - that css create our designer). I load css and try to do this in my code: this.grid = new HtmlPanelGrid(); this.grid.setStyleClass("toplist,toplist-top"); But no changes I could see in my page. I tried to load css and use it with tags, but it also didnt work and created one more problem - my jsf didn't reload and redisplay: <div class="toplist"> <div class="toplist-top"><h2>Top 10 List</h2></div> <div class="toplist-bg"> <div class="toplist-cont"> <rich:tab label="Top-List" id="screenTop"> <h:panelGrid id="topListTable" binding="#{chartBean.topListTable}" /> </rich:tab> <a4j:support event="onclick" reRender="menuSection" actionListener="#{chartBean.doChangeTab}" /> </div> </div> <div class="toplist-bottom"></div> </div> I am interesting of adding round corners to topListTable in the code. How can I do it? I load my css as: <link href="#{facesContext.externalContext.requestContextPath}/css/stylesheet.css" rel="styleSheet" type="text/css"/> If anybody knows, how can I add corners to the panelGrid. Sorry for stupid question, but I am newborn in jsf and richfaces, and I want to solve this task right Thanks!

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destroy cfwindow in javascript 'is not a function'

- by Ryan French

Hi All, Having an issue here that I have tried everything I can think of but cant get it to work. I have a page with a link that creates a cfwindow like so function create_window(ID){ var config = new Object(); config.modal=true; config.center=true; config.height=775; config.width=700; config.resizable=false; config.closable=false; config.draggable=false; config.refreshonshow=true; ColdFusion.Window.create('newWindow','Window Title', '/source/url'+ID, config) The window is created and the URL has the ID parsed to it that is used for displaying the correct item in the window. This all works fine. The problem is when I try and close the window and open a new window with a different item being displayed, the URL is not changed. I realise that this is because the window is being hidden, and not destroyed, and therefore it is the same window being opened. So I have created an onHide event handler to destroy the window like so. function showItemDetails(){ var ID=document.getElementById("sList").value create_window(ID); ColdFusion.Window.onHide('newWindow', refreshList); } function refreshList(){ ColdFusion.bindHandlerCache['sList'].call(); ColdFusion.Window.destroy('newWindow',true); } Now when I close the window Firebug is returning the error "ColdFusion.Window.destroy is not a function" (In IE the error is "Object doesn't support this property or method"). I have made sure we are running the latest version of ColdFusion 8.01 on the server (as I know that .destroy wasnt added until 8.01) and have applied the latest hotfixes to the server as well. Any ideas?

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Atlas style map index for static google map

- by Ben Holland

Hello, I'm using a static google map, but really this problem could apply to any maps project. I want to divide a map into multiple quadrants (of say 50x50 pixels) and label the columns as A, B, C.... and the rows as 1, 2, 3... Next I plan to do something like, 1) Find the markers which are the farthest north, east, south, and west 2) Use that info to to define the bounding boxes of each row and column box 3) Classify each marker by its row and column (Example Marker 1 = [A,2]) A few requirements, I don't know the zoom level because I let Google set the zoom level appropriately for me and I would rather not use an algorithm that is dependent on a zoom level. I do however know the locations of all of the markers that are shown on the map. Here is an example of a map that I would like to classify the markers for, static map example link. I found these which look like a good start, Resource 1, Resource 2 But I think I'm still in need of some help getting started. Can anyone help write out some pseudo code or post a few more resources? I'm kind of in a rut at the moment. Thanks! Much appreciated of any help!

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jQuery - Not sure which method to use, closest() and parent() don't work.

- by Nike

Hello, again. :) God i feel like i'm spamming stackoverflow, this is my 3rd post for today. Sorry, heh. I even posted a question regarding this before, kind of, but i've changed the code a bit since so i thought it was better to post a new question. $('.pmlist ul li h4 .toggle').click(function() { $(this).closest('.meddel').toggle(250); }); That's what i've got now. The reason why the closest() method isn't working is because the div .meddel is just next to the h4 element. And closest() only crawls right up the DOM tree, ignoring other child elements. Right? parent() works almost the same and doesn't work either. And as i only want to toggle the closest .meddel div in the element, i need something that, yeah justs grabs the nearest one, and not all of them. To clear it up a bit, here's the HTML for one list item: <li class="item"> <h4><a class="toggle">ämne</a><small>2010-04-17 kl 12:54 by <u>nike1</u></small></h4> <div class="meddel"> <span> <img style="max-width: 70%; min-height: 70%;" src="profile-images/nike1.jpg" alt="" /> <a href="account.php?usr=47">nike1</a> </span> <p>text</p> </div> </li> I have several items like that, and if i click one toggle link, i just want the nearest .meddel to be toggled, as mentioned before. Thanks. -Nike

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Free solution for automatic updates with a .NET/C# app?

- by a2h

Yes, from searching I can see this has been asked time and time again. Here's a backstory. I'm an individual hobbyist developer with zero budget. A program I've been developing has been in need of constant bugfixes, and me and users are getting tired of having to manually update. Me, because my current solution of Manually FTP to my website Update a file "newest.txt" with the newest version Update index.html with a link to the newest version Hope for people to see the "there's an update" message Have them manually download the update sucks, and whenever I screw up an update, I get pitchforks. Users, because, well, "Are you ever going to implement auto-update?" "Will there ever be an auto-update feature?" Over the past I have looked into: WinSparkle - No in-app updates, and the DLL is 500 KB. My current solution is a few KBs in the executable and has no in-app updates. http://windowsclient.net/articles/appupdater.aspx - I can't comprehend the documentation http://www.codeproject.com/KB/vb/Auto_Update_Revisited.aspx - Doesn't appear to support anything other than working with files that aren't in use wyUpdate - wyBuild isn't free, and the file specification is simply too complex. Maybe if I was under a company paying me I could spend the time, but then I may as well pay for wyBuild. http://www.kineticjump.com/update/default.aspx - Ditto the last sentence. ClickOnce - Workarounds for implementing launching on startup are massive, horrendous and not worth it for such a simple feature. Publishing is a pain; manual FTP and replace of all files is required for servers without FrontPage Extensions. I'm pretty much ready to throw in the towel right now and strangle myself. And then I think about Sparkle... EDIT: I came across SparkleDotNET just then. Looks good, though the DLL is 200 KB. Don't know if that's really that big of an issue, though.

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Mac OS X software always order files alphabetically rather than by type.

- by george

I have noticed many Mac applications sort the files alphabetically rather than by type. A good example would be Coda by panic.com. The files in the file menu are organized alphabetically. I requested for them to add the feature to organize files by type, and they've said that it's a Finder thing. So I looked at other applications to see if they were organizing by type. I noticed Dreamweaver CS4 had this same problem and now including Dreamweaver CS5. There has to be something in the Mac that does this and that I can modify. I played with Spotlight and it now displays its files by type (thinking that's what I can do) but it didn't take effect in other applications. What library are these applications using to display a file menu for their files? here is an example-- file menu layout of coda by panic.com. (i couldnt post another link because it wouldnt let me). can you see how everything is organised alphabetically rather than by folder? i just want the file menu to show all folders first then all the files. 1) http://www.iaddesign.com/coda.png there must be a way to modify mac to let me to do this.

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Smack API giving error while logging into Tigase Server setup locally

- by Ameya Phadke

Hi, I am currently developing android XMPP client to communicate with the Tigase server setup locally.Before starting development on Android I am writing a simple java code on PC to test connectivity with XMPP server.My XMPP domain is my pc name "mwbn43-1" and administrator username and passwords are admin and tigase respectively. Following is the snippet of the code I am using class Test { public static void main(String args[])throws Exception { System.setProperty("smack.debugEnabled", "true"); XMPPConnection.DEBUG_ENABLED = true; ConnectionConfiguration config = new ConnectionConfiguration("mwbn43-1", 5222); config.setCompressionEnabled(true); config.setSASLAuthenticationEnabled(true); XMPPConnection con = new XMPPConnection(config); // Connect to the server con.connect(); con.login("admin", "tigase"); Chat chat = con.getChatManager().createChat("aaphadke@mwbn43-1", new MessageListener() { public void processMessage(Chat chat, Message message) { // Print out any messages we get back to standard out. System.out.println("Received message: " + message); } }); try { chat.sendMessage("Hi!"); } catch (XMPPException e) { System.out.println("Error Delivering block"); } String host = con.getHost(); String user = con.getUser(); String id = con.getConnectionID(); int port = con.getPort(); boolean i = false; i = con.isConnected(); if (i) System.out.println("Connected to host " + host + " via port " + port + " connection id is " + id); System.out.println("User is " + user); con.disconnect(); } } When I run this code I get following error Exception in thread "main" Resource binding not offered by server: at org.jivesoftware.smack.SASLAuthentication.bindResourceAndEstablishSession(SASLAuthenticatio n.java:416) at org.jivesoftware.smack.SASLAuthentication.authenticate(SASLAuthentication.java:331) at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:395) at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:349) at Test.main(Test.java:26) I found this articles on the same problem but no concrete solution here Could anyone please tell me the solution for this problem.I checked the XMPPConnection.java file in the Smack API and it looks the same as given in the link solution. Thanks, Ameya

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Implementing A Static NSOutlineView

- by spamguy

I'm having a hard time scraping together enough snippets of knowledge to implement an NSOutlineView with a static, never-changing structure defined in an NSArray. This link has been great, but it's not helping me grasp submenus. I'm thinking they're just nested NSArrays, but I have no clear idea. Let's say we have an NSArray inside an NSArray, defined as NSArray *subarray = [[NSArray alloc] initWithObjects:@"2.1", @"2.2", @"2.3", @"2.4", @"2.5", nil]; NSArray *ovStructure = [[NSArray alloc] initWithObjects:@"1", subarray, @"3", nil]; The text is defined in outlineView:objectValueForTableColumn:byItem:. - (id)outlineView:(NSOutlineView *)ov objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)ovItem { if ([[[tableColumn headerCell] stringValue] compare:@"Key"] == NSOrderedSame) { // Return the key for this item. First, get the parent array or dictionary. // If the parent is nil, then that must be root, so we'll get the root // dictionary. id parentObject = [ov parentForItem:ovItem] ? [ov parentForItem:ovItem] : ovStructure; if ([parentObject isKindOfClass:[NSArray class]]) { // Arrays don't have keys (usually), so we have to use a name // based on the index of the object. NSLog([NSString stringWithFormat:@"%@", ovItem]); //return [NSString stringWithFormat:@"Item %d", [parentObject indexOfObject:ovItem]]; return (NSString *) [ovStructure objectAtIndex:[ovStructure indexOfObject:ovItem]]; } } else { // Return the value for the key. If this is a string, just return that. if ([ovItem isKindOfClass:[NSString class]]) { return ovItem; } else if ([ovItem isKindOfClass:[NSDictionary class]]) { return [NSString stringWithFormat:@"%d items", [ovItem count]]; } else if ([ovItem isKindOfClass:[NSArray class]]) { return [NSString stringWithFormat:@"%d items", [ovItem count]]; } } return nil; } The result is '1', '(' (expandable), and '3'. NSLog shows the array starting with '(', hence the second item. Expanding it causes a crash due to going 'beyond bounds.' I tried using parentForItem: but couldn't figure out what to compare the result to. What am I missing?

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Problem after adding <form>?

- by Mahmoud

When i added <form> to my web page, all my javascript stopped working, and when i put the form at the begining of my table submit wont work, what i am doing wrong. below is my code <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Sabay Afrah.Inc | Contact Us</title> <script src="js/clear.js" language="javascript" type="text/javascript"></script> <script src="js/SpryValidationSelect.js" type="text/javascript"></script> <script type="text/jscript"> function Checking(form){ if(empty(form.fname.value){ alert("do nothing"); } } </script> <style type="text/css">  </style> <link href="theme/style.css" rel="stylesheet" type="text/css" /> <link href="theme/SpryValidationSelect.css" rel="stylesheet" type="text/css" /> </head> <body> <form action="enterdb.php" method="post"> <table width="1000" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td align="center"> </td> </tr> <tr> <td><table width="1006" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="4"> </td> <td width="93" align="right"> </td> <td width="4"> </td> <td width="374" ><img src="images/logo.png" width="230" height="114" /></td> <td width="426" align="right" class="address"> 10 GlenLake parkway<br /> Suite 130, mailbox # 76<br /> Atlanta, GA 30328<br /> Phone #: + 678-222-3442<br /> Fax #: +678-222-3401<br /> Office hours: M-F 8:30 a.m. to 5:00 p.m.<br /> </td> <td width="99"> </td> </tr> <tr> <td colspan="5"><table width="600" border="0" cellspacing="0" cellpadding="0"> <tr> <td> </td> <td class="title"> </td> </tr> <tr> <td width="84"><br /></td> <td width="516" class="title">Contact Us</td> </tr> </table></td> <td> </td> </tr> </table></td> </tr> <tr> <td> <table width="883" border="0" align="center" cellpadding="0" cellspacing="0"> <tr class="table"> <td width="27" rowspan="10" bgcolor="#330099" class="textable"> </td> <td colspan="2" bgcolor="#330099" class="textable"> </td> <td width="29" rowspan="8" bgcolor="#330099" class="textable"> </td> <td colspan="3" class="textable"> </td> </tr> <tr > <td width="139" height="31" bgcolor="#330099" class="textable">First Name:</td> <td> <input id="fname" name="fname" type="text" size="40" /> </td> <td width="150" class="textable">Last Name:</td> <td width="265" class="textable"><table width="200" border="0" cellspacing="0" cellpadding="0"> <tr> <td ><table width="200" border="0" cellspacing="0" cellpadding="0"> <tr> <td ><input id="lname" name="lname" type="text" size="40" /></td> </tr> </table></td> </tr> </table></td> <td width="32" class="textable"> </td> </tr> <tr> <td height="30" class="textable">Subject:</td> <td> <span id="spryselect1"> <label> <select name="sub" id="sub"> <option> Choose a Subject</option> <option> General Question</option> <option> MemberShip Area</option> <option> Others</option> </select> </label> <span class="selectRequiredMsg">Please select a Subject.</span></span> </td> <td colspan="3" class="textable"> </td> </tr> <tr> <td height="33" class="textable">Company Name:</td> <td> <input id="cname" name="cname" type="text" size="40" /></td> <td class="textable">Company Address:</td> <td class="textable"><table width="200" border="0" cellspacing="0" cellpadding="0"> <tr> <td><input id="cadd" name="cadd" type="text" size="40" onclick="" /></td> </tr> </table></td> <td class="textable"> </td> </tr> <tr> <td height="31" class="textable">Phone Number:</td> <td><input id="phonen" name="phonen" type="text" size="40" /> </td> <td colspan="3" rowspan="4" class="textable"> </td> </tr> <tr> <td height="31" class="textable">Fax Number:</td><td> <input id="faxn" name="faxn" type="text" size="40" /></td> </tr> <tr> <td height="32" class="textable">Email Address:</td><td><input id="email" name="email" type="text" size="40" /></td> </tr> <tr> <td colspan="2" class="textable"> </td> </tr> <tr> <td valign="top" class="textable">Additional Information:</td> <td colspan="5" class="textable"><table width="600" border="0" align="left" cellpadding="0" cellspacing="0"> <tr> <td colspan="2" align="center"> <textarea id="add" name="add" cols="70" rows="10" /></textarea> </td> </tr> <tr> <td align="center" class="textable"> <input name="Submit" type="submit" value="Submit" onclick="Checking()"/> </td> <td align="center" class="textable"> <input type="reset" value="Clear" /> </td> </tr> </table></td> </tr> <tr> <td colspan="6" class="textable"> </td> </tr> </table></td> </tr> </table> </form> <script type="text/javascript">  </script> </body> </html>

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problem getting info from a cookie with javascript

- by Jason

I am having an issue with my cookies and I can't figure it out. Basically I have it set up so it checks for the cookie to see if the user is logged in, and then displays either a welcome message or a login link. It works - except that instead of returning the persons name in the welcome message it just is blank where the name should be. The cookie is there, with all the appropriate info.. not sure what I am doing wrong. var itm = new Array(); itm[0] = findCookie("ui"); if (itm[0] == null) { document.write("<h2><a href='logreg.html'>Log In or Sign Up</a></h2>"); } else { var c1 = itm[0].indexOf(","); var c2 = itm[0].indexOf(",",c1); var c3 = itm[0].indexOf(",",c2); var gname = itm[0].substring(c2,c3); document.write("<h2>Welcome "+gname+"!</h2>"); } The findCookie function is.. function findCookie(val){ var cookie = null; var findVal = val + "="; var dc = document.cookie; if (dc.length > 0) { var start = dc.indexOf(findVal); if (start >= 0) { start += findVal.length; lastVal = dc.indexOf(";", start); if (lastVal == -1) { lastVal = dc.length; } cookie = (dc.substring(start, lastVal)); } else { return cookie; } } return cookie; }

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WDK build-process hooks: need incremental build with auto-versioning

- by Mystagogue

I've previously gotten incremental builds with auto-versioning working in a team build setting for user-mode code, but now I'm dealing with the builds of WDK device drivers. It's a whole new ball-game. I need to know what extension point, or hook, is available in the WDK build that occurs after the driver has been selected to be incrementally built, but before it actually starts building the object files. More specifically, I have a .rc file that contains the version of the device driver. I need to update the version in that file ONLY IF the driver is going to be built anyway. If I bump the value in the .rc file prematurely, it will cause the incremental build to kick-off (that is bad). If I wait too long, then the incremental build won't see that I've changed the .rc file. Either way, I do need the WDK to realize that the new version I've placed into the .rc file needs to be built into a new .res file and linked. How do I do this? What suggested extension points should I play with? Is there a link-tutorial on the WDK build process that is particularly revealing regarding this topic?

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Calling Model Functions from a Library

- by Abs

Hello all, I have turned a normal PHP class into a library so I can use it in Codeigniter as a library. I can load it and call the functions I need in that class. Here is that class to help with the question. However, there are quite a few points where I have to call functions in my class. These functions reside in the model that instantiated my class. How can I do this as currently normal calls don't work. Here is my code: class Controlpanel_model extends Model { var $category = ''; var $dataa = 'a'; function Controlpanel_model(){ parent::Model(); } function import_browser_bookmarks(){ $this->load->library('BookmarkParser'); /* *In this function call to the class I pass * what model functions exist that it should call * You can view how this done by clicking the link above and looking at line 383 */ $this->bookmarkparser->parseNetscape("./bookmarks.html", 0, 'myURL', 'myFolder'); return $this->dataa; } function myURL($data, $depth, $no) { $category = $this->category; $this->dataa .= 'Tag = '.$category.'<br />'.'URL = '.$data["url"].'<br />'.'Title = '.$data["descr"].'<br />'.'<br /><br />'; } function myFolder($data, $depth, $no) { $this->category = $data["name"]; } } Thanks all for any help.

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jquery slideToggle() and unknown height?

- by GaVrA

Hello! Im using jquery 1.3.2 and this is the code: <script type="text/javascript"> //<![CDATA[ jQuery(function(){ jQuery('.news_bullet a.show_preview').click(function() { jQuery(this).siblings('div').slideToggle('slow'); return false; }).toggle( function() { jQuery(this).css({ 'background-position' : '0 -18px' }); }, function() { jQuery(this).css({ 'background-position' : '0 0' }); }); }); //]]> </script> If you see here i have bunch of small green + which when you click some text is revealed and background-position is changed for that link so then it shows the other part of image, red -. So the problem i am having is that i dont know the height for those hidden elements, because it depends on how much text there is, so when i click on + and show them, animation is 'jumping'. One workaround that i found is to put fixed height and overflow:hidden to those hidden elements. You can see how much smoother animation is running in top left block(the one with 'Vesti iz sveta crtanog filma' at the top). All other blocks dont have fixed height, and animation there is 'jumping'. Atm that fixed height in top left block is 30px, but ofc some elements require more height and some require less, so that is not a good solution... :) So how to stop this animation from 'jumping' when there is no fixed height?

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"echo" in functions or "echo" all page?

- by jasmine

Is this a good method to save to all index in a variable and then echo this? for example <?php $txt='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-9" /> <link rel="stylesheet" type="text/css" href="css/style.css"/> <title>Untitled Document</title> </head> <body> <div class="wrapper"> <div class="header"> <h2>'.heaf_func().'</h2> </div> <div class="content">content</div> <div class="footer">footer</div> </div> </body> </html>'; echo $txt; ?>

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