turn a - Page 156 - Developer IT

How extensive is an Object in CakePHP model linkage?

- by Andre

I was hoping someone with an understanding on CakePHP could shed some light on a question I've been having. Here's my scenario, I have a User this User has a Company which in turn has many Department and many Address. If I were to get a User could I expect to have access to the Company and all models associated with that Company? So would $user['Company']['Department'][0] or $user['Company']['Address'][0] be possible? Which brings me back to the original question, how extensive is the linkage between models?

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What turns away users/prospective users?

- by Zach Johnson

In your experience, what kinds of things have turned away users and prospective users from using your programs? Also, what kinds of things turn you away from using someone else's programs? For example, one thing that really bugs me is when someone provides free software, but requires you to enter your name and email address before you download it. Why do they need my name and email address? I just want to use the program! I understand that the developer(s) may want to get a feel for how many users they have, etc, but the extra work I have to do really makes me think twice about downloading their software, even if it does really great things.

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asp.net mvc custom routes with multiple submit buttons

- by dangerisgo

So I have a custom route as such: routes.MapRoute( "Wizard", // Route name "Wizard/{page}", // URL with parameters new { controller = "Wizard", action = "Index" } // Parameter defaults ); and have the following on my View: <% Html.BeginForm("Continue", "Wizard"); %> <input type="submit" value="Continue" name="Continue" /> <% Html.EndForm(); %> In which I want to call this function: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Continue(string Number, string Rev) { (...) } but in turn when that button is pressed always calls the postback Index rather than the one I want. If I remove the custom route, it calls my function, but what I want to be displayed in the address bar is: localhost:xxxx/Wizard/1 where the number at the end is the page (div shown) of the wizard either 1, 2, 3, or 4. So is there something I'm missing or can it not be done? Thanks.

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PHP: how to grab an URL out of a chunk of text?

- by Eileen

Let's say I have a big RSS feed full of Twitter posts, and they are all plain text. Lots of the posts contain URLs, and I'd like those URLs to be turned into links. So I've got a variable that is equal to: Visualization of layoffs by industry, number and date. Looking forward to seeing similar for hiring trends. http://bit.ly/XBW4z And I'd like it to turn into: Visualization of layoffs by industry, number and date. Looking forward to seeing similar for hiring trends. http://bit.ly/XBW4z How could I do that? I am useless when it comes to regex and its ilk, so help is much appreciated!

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Is there a way to hide annotations in Netbeans or Eclipse?

- by Boden

Maybe a dumb question, but it would be nice if there was a way to hide or collapse Java annotations when viewing source in Netbeans (or Eclipse). I'm not finding an option and a quick search didn't turn anything up. Is this one of those "you should never want to do that, code folding is a sin!" things? Personally I'd find it useful for annotated entity classes. All the hibernate / etc annotations are just fluff that I never look at once my mapping is working fine. It's similar to imports, really. (Yes, I can use XML instead of annotations, which I might start doing. But I was just wondering...)

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Why is autorelease especially dangerous/expensive for iPhone applications?

- by e.James

I'm looking for a primary source (or a really good explanation) to back up the claim that the use of autorelease is dangerous or overly expensive when writing software for the iPhone. Several developers make this claim, and I have even heard that Apple does not recommend it, but I have not been able to turn up any concrete sources to back it up. SO references: autorelease-iphone Why does this create a memory leak (iPhone)? Note: I can see, from a conceptual point of view, that autorelease is slightly more expensive than a simple call to release, but I don't think that small penalty is enough to make Apple recommend against it. What's the real story?

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Debugging over-released objects, problem with NSZombie

- by hyn

I have a reproduceable EXC_BAD_ACCESS during NSAutoreleasePool -drain, which seems to indicate that I am over-releasing an object. So I enable NSZombie, but then the program does not crash any more. Nor do I get any info logged to the console. If I turn NSZombie off, the crash comes back. What is the meaning of this? I thought NSZombies were used to tackle exactly this kind of problem. If NSZombie won't help, is there another way to interrogate this over-released object? Also the crash is not reproduceable on Simulator, which is why I can't use Instruments with NSZombie.

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Flex chart ItemRollOver behavior

- by DannyC

Hi Guys, I'm trying to prevent a default chart item roll over highlight in a Spark column chart. If you look at any of the chart examples on this page , when you roll over any of the chart series items, they turn a darkened shade of their original colour. This is what I want to prevent. So far I have had no luck with using the itemRollOverColor property, as this only allows you to set it to one specific colour for the whole chart (my app has several different coloured series on the chart at once). Also, trying to leverage the itemRollOver event (with preventDefault() etc) hasn't worked either. Does anyone have any idea what I am missing here? Thanks for reading guys

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Flex - weird display behavior on large number of Canvas

- by itarato

Hi, I have a Flex app (SDK 3.5 - FP10) that does mindmap trees. Every node is a Canvas (I'm using Canvas specific properties so I needed it). It has a shadow effect, background color and some small ui element on it (like icons, texts...). It works perfectly until it goes over ~700 nodes (Canvas). Over that number it shows grey rectangles: http://yfrog.com/bhw2pj . If I turn off the DropShadowFilter effect for the Canvas, they are also gone, so I assume it's a DropShadowFilter problem: http://yfrog.com/2d9y8j . The effect is simple: private static var _nodeDropShadow:DropShadowFilter = new DropShadowFilter(1, 45, 0x888888, 1, 1, 1); _backgroundComp.filters = _nodeDropShadow; Is it possible that Flex can't handle that much? Thanks in advance

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Computer sending data while turned of

- by Nicklas Ansman

I have a some what strange problem (which could have and easy and obvious solution for all I know). My problem is that when I've booted ubuntu (now 10.4 but same problem with 9.10) and turns it off it starts sending a HUGE amount of data via the ethernet cable, so much in fact that my router can't handle it and stops responding. As far as I can tell the computer is completely turned off with no fans spinning. I can add that if I boot windows I do not have this problem, just when exiting ubuntu. There are two "fixes" for my problem: Pull the ethernet cable until the next boot Turn off power to the PSU and wait for the capacitors to unload Is there anyone who knows what could be going on? I'd be happy to post some logs or conf-files. Currently I'm using the ethernet port on my motherboard which is a Asus P6T Deluxe V2 with an updated version of the BIOS (maybe not the latest but since it only happens when I've been in ubuntu I don't wanna mess with the BIOS too much). Regards Nicklas

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Speeding up jQuery empty() or replaceWith() Functions When Dealing with Large DOM Elements

- by Levi Hackwith

Let me start off by apologizing for not giving a code snippet. The project I'm working on is proprietary and I'm afraid I can't show exactly what I'm working on. However, I'll do my best to be descriptive. Here's a breakdown of what goes on in my application: User clicks a button Server retrieves a list of images in the form of a data-table Each row in the table contains 8 data-cells that in turn each contain one hyperlink Each request by the user can contain up to 50 rows (I can change this number if need be) That means the table contains upwards of 800 individual DOM elements My analysis shows that jQuery("#dataTable").empty() and jQuery("#dataTable).replaceWith(tableCloneObject) take up 97% of my overall processing time and take on average 4 - 6 seconds to complete. I'm looking for a way to speed up either of the above mentioned jQuery functions when dealing with massive DOM elements that need to be removed / replaced. I hope my explanation helps.

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basic question with a dtd

- by voodoomsr

i need an element with the characteristics <!ELEMENT section ((comment*)|definition|(comment*))> but that is ambiguous, i get the next message in visual studio Multiple definition of element 'comment' causes the content model to become ambiguous. A content model must be formed such that during validation of an element information item sequence, the particle contained directly, indirectly or implicitly therein with which to attempt to validate each item in the sequence in turn can be uniquely determined without examining the content or attributes of that item, and without any information about the items in the remainder of the sequence. So how can i write correctly that? the correct structure is one definition surrounded by possibles comments elements.

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A follow up on type coercion in C++, as it may be construed by type conversion

- by David

This is a follow up to my previous question. Consider that I write a function with the following prototype: int a_function(Foo val); Where foo is believed to be a type defined unsigned int. This is unfortunately not verifiable for lack of documentation. So, someone comes along and uses a_function, but calls it with an unsigned int as an argument. Here the story takes a turn. Foo turns out to actually be a class, which can take an unsigned int as a single argument of unsigned int in an explicit constructor. Is it a standard and reliable behavior for the compiler to render the function call by doing a type conversion on the argument. I.e. is the compiler supposed to recognize the mismatch and insert the constructor? Or should I get a compile time error reporting the type mismatch.

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DIfferences in pictures between ie6 and ie7

- by Para

BACKGROUND-IMAGE: url(../images/feedback_trans_tab.png); _background-image: url(../images/feedback_tab_ie6.png) I've seen code like this in a css file feedback_tab_ie6.png is 886 bytes and feedback_trans_tab.png has 1.64Kb Both pics have transparent backgrounds so that you can apply your own background color. Both look the same. yet in IE6 if I comment this line: _background-image: url(../images/feedback_tab_ie6.png) this appears: and if I don't this appears: DOes anyone have any idea why this is? How can I turn a ie6 picture into an ie6 picture from Photoshop? Thank you in advance

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blank space on google home page

- by topgun_ivard

2 questions, i was doing nothing productive, and tried selecting the google home page (a left click drag and select whole page) on google.com i see that beside the search box, on the left side, there is an empty space   i looked up the source code and there indeed was a <td width=25%> </td> stupid as it may sound, but i was still curious to know why the blank space is out there..or is it just a simple typo?? :) also, any idea what window.lol&&lol() does? curious yet again, google search didnt get me any result and i thought i would turn to stackoverflow to enlighten me... thanks, ivar

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MSSQL 2000 Stored Procedure to Split Shift Times

- by JClaspill

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Notifying JMS Message sender (Web App) after message processed by Listener

- by blob

I have a Web application (Flex 4 - Spring Blaze DS - Spring 3.0) which sends out an JMS event to a batch application (Standalone java) I am using JMS infrastrucure provided by Spring (spring JmsTemplate,SimpleMessageListenerContainer,MessageListenerAdapter) with TIBCO EMS. Is there any way by which we can notify a web user once message processing is completed by listener. One of the way to send a response event which will be listened by web application; but how to address following scenario: User1 click on submit - which in turn sends a JMS message Listener on receiving message processes the message (message processing may take 20-30 mins to complete). Listener application sends out another JMS event "Process_complete" As this is a web application; there are n users currently logged into the application. so how to identify a correct user / what if user is already logged off? Is there any way to handle this? Please post your views.

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Last Observation Carried Forward In a data frame?

- by Tal Galili

Hi all, I wish to implement a "Last Observation Carried Forward" for a data set I am working on which has missing values at the end of it. Here is a simple code to do it (question after it): LOCF <- function(x) { # Last Observation Carried Forward (for a left to right series) LOCF <- max(which(!is.na(x))) # the location of the Last Observation to Carry Forward x[LOCF:length(x)] <- x[LOCF] return(x) } # example: LOCF(c(1,2,3,4,NA,NA)) LOCF(c(1,NA,3,4,NA,NA)) Now this works great for simple vectors. But if I where to try and use it on a data frame: a <- data.frame(rep("a",4), 1:4,1:4, c(1,NA,NA,NA)) a t(apply(a, 1, LOCF)) # will make a mess It will turn my data frame into a character matrix. Can you think of a way to do LOCF on a data.frame, without turning it into a matrix? (I could use loops and such to correct the mess, but would love for a more elegant solution) Cheers, Tal

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Internet and Intellisense bad for your memory?

- by Barry Jones

Having programmed for a while now I have noticed that I am becoming more and more reliant on the internet and intellisense to do my job. But I was wondering how much that has effected my knowledge over the past year or so. But does this matter? For example I am more likely now to remember that when I need to program against objects I have no knowledge about, I will go to the System.Reflection namespace and a quick look down the list will provide me with enough detail to get going again. But if you was to ask me which classes etc are required I would struggle to name them all. This problem of remembering seems to manifest itself more when going for interviews when people seem to focus more on the minute detail of obscure areas of the .NET framework and not on the wide and varied knowledge and experience of the applicant. Anyway I digress. Does anyone else think that maybe its time to turn of the intellisense and try and find better ways to learn, then quick fixes and work arounds of the internet?

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IE 8 html parsing error message.

- by user48408

I'm experiencing the problem outlined in this kb article. http://support.microsoft.com/kb/927917 . Sorry I can't hyperlink cos i don't have enough points! "This problem occurs because a child container HTML element contains script that tries to modify the parent container element of the child container. The script tries to modify the parent container element by using either the innerHTML method or the appendChild method." The problem I'm having diagnosing the source of my problem is 2 fold: 1) This is only happening on some client machines (All are running IE8) and not others. How/Why only some? 2) I don't have any scripts which modify the innerHTML or call appendChild on any dom elements. I do have server side code which modify properties on asp .net server controls. (Essentially all thats happening is a panel control with some more controls is being made visbile or invisible on a button click), would these in turn then set the innerHTML property of the client rendered control(?)

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Generating Source Info For Flex BitmapData.

- by Joshua

Instead of populating the BitmapData class from an IMAGE. I would like to (within Actionscript) GENERATE some new BitmapData by capturing the Bitmap representing say, a TextArea component on the stage. In other words, sort of take a "screen capture" or "screenshot" of one of the components, and convert that into an image. Am I silly to even wonder if such a thing is feasible? Can an Air/Flex app "look at itself" in this way? Can it turn a datagrid or a canvas or a textinput into the corresponding image AS IF via screen capture? Even a hint in the right direction would be appreciated, Thanks In Advance.

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Convert byte array to understandable String

- by Ender

I have a program that handles byte arrays in Java, and now I would like to write this into a XML file. However, I am unsure as to how I can convert the following byte array into a sensible String to write to a file. Assuming that it was Unicode characters I attempted the following code: String temp = new String(encodedBytes, "UTF-8"); Only to have the debugger show that the encodedBytes contain "\ufffd\ufffd ^\ufffd\ufffd-m\ufffd\ufffd\/ufffd \ufffd\ufffdIA\ufffd\ufffd". The String should contain a hash in alphanumerical format. How would I turn the above String into a sensible String for output?

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How to build a Windows Forms email-aware text box?

- by Patrick Linskey

Hi, I'm building a C# client app that allows a user to communicate with one or more existing users in a system via an email-like metaphor. I'd like to present the user with a text entry box that auto-completes on known email addresses, and allows multiple delimiter-separated addresses to be entered. Ideally, I'd also like the email addresses to turn into structured controls once they've been entered and recognized. Basically, I'm modeling the UI interaction for adding users after Facebook's model. Are there any Windows Forms controls out there with the ability to do something like this? Is there any well-established terminology for a hybrid textbox / control list box (no, not a ComboBox) or something that I should be searching for? Thanks, -Patrick

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administrator permission are recommended for running visual studio sp1 on windows 7 rc

- by vinayakg

I get this annoying message everytime I try to run visual studio 2005(even using "Run as Administrator" gives same message). I have VS 2005 Professional with all the latest service packs installed including vs2005 SP1 and vs 2005 update for Vista. I am part of the administrators group on my machine. Still I have this problem. Some read on the web suggests that Running program in Compatibility mode solves the problem. Others also recommend turning off the message forever. Well my question is how do I turn off this warning which seems to bother me even if I am part of administrators group. Does Visual Studio does not run in administrator mode even when I am an administrator or even I use "Run as adminsitrator". Also it would be greate if someone out there can highlight what features of Visual Studio wont be available if Visual Studio is launched as a normal user (User is not an administrator/part of the administrator group) on Windows 7.

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Are indivisible operations still indivisible on multiprocessor and multicore systems?

- by Steve314

As per the title, plus what are the limitations and gotchas. For example, on x86 processors, alignment for most data types is optional - an optimisation rather than a requirement. That means that a pointer may be stored at an unaligned address, which in turn means that pointer might be split over a cache page boundary. Obviously this could be done if you work hard enough on any processor (picking out particular bytes etc), but not in a way where you'd still expect the write operation to be indivisible. I seriously doubt that a multicore processor can ensure that other cores can guarantee a consistent all-before or all-after view of a written pointer in this unaligned-write-crossing-a-page-boundary situation. Am I right? And are there any similar gotchas I haven't thought of?

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