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• How to work with session variables in php mvc pattern

  - by Richard

  Hello, I just found out that I loose any reference to the session array if I create a new view and try to set a session variable in the controller. The array just comes out as empty. I actually try to use the session array to store the post vars from a multistep registration form. This was actually working when the php was spachetticode, but now that I dumpt everything in a mvc pattern, it is not functioning anymore. Can anyone explain what is going om here and possibly offer a solution om how to work with the session array? Thanks in adv, Richard

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• How to create such a PHP array in JavaScript?

  - by dfjhdfjhdf

  How to create such a PHP array in JavaScript? $arr = array('oneKey' => array('key1' => 'value1', 'key2' => 'value2'), 'anotherKey' => array('key1' => 'value1', 'key2' => 'value2')); EDIT: Guys, I forgot to mention that I would then need a simple way to sort those array('key1' = 'value1', 'key2' = 'value2') lexicographically by its keys. EDIT2: Actually I won't "convert" it. It's a way I explain things. I am more of a php guy.

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• OpenGL coordinates question

  - by Chonch

  Hey, I have a simple OpenGL drawing. When the user changes the window's size, I want the drawing to maintain it's aspect ration. I accomplished that by setting the glViewport to the maximum rectangle with the appropriate aspect ration whenever the reshape method is called. My problem is that I want to draw a square that will always remain in the top right corner of the window, no matter what the size or shape of the window is. Right now, that square moves around the screen whenever the window is reshaped. Can anyone please explain how to do this? Thank you,

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• Explanation of casting/conversion int/double in C#

  - by cad

  I coded some calculation stuff (I copied below a really simplifed example of what I did) like CASE2 and got bad results. Refactored the code like CASE1 and worked fine. I know there is an implicit cast in CASE 2, but not sure of the full reason. Any one could explain me what´s exactly happening below? //CASE 1, result 5.5 double auxMedia = (5 + 6); auxMedia = auxMedia / 2; //CASE 2, result 5.0 double auxMedia1 = (5 + 6) / 2; //CASE 3, result 5.5 double auxMedia3 = (5.0 + 6.0) / 2.0; //CASE 4, result 5.5 double auxMedia4 = (5 + 6) / 2.0; My guess is that /2 in CASE2 is casting (5 + 6) to int and causing round of division to 5, then casted again to double and converted to 5.0. CASE3 and CASE 4 also fixes the problem.

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• symbol lookup error in player-stage !

  - by Arkapravo

  Hi everyone ! I was getting a symbol lookup error in player stage, I rectified it after hours of hit and trial ! ( see my blogspot ). Even then in about 30 uses, the error resurfaces and I have to rectify it !. As of now, I am able to work fine ! the rectification just takes about 30 seconds. However, I am not sure why is this happening! Can someone please explain whatever is SYMBOL LOOKUP ERROR and why does it happens ? Many thanks ! Arkapravo

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• C# Linq Entity Conversion Error on Nonexistent Value?

  - by Ryan

  While trying to query some data using the Linq Entity Framework I'm receiving the following exception: {"Conversion failed when converting the varchar value '3208,7' to data type int."} The thing that is confusing is that this value does not even exist in the view I am querying from. It does exist in the table the view is based on, however. The query I'm running is the following: return context.vb_audit_department .Where(x => x.department_id == department_id && x.version_id == version_id) .GroupBy(x => new { x.action_date, x.change_type, x.user_ntid, x.label }) .Select(x => new { action_date = x.Key.action_date, change_type = x.Key.change_type, user_ntid = x.Key.user_ntid, label = x.Key.label, count = x.Count(), items = x }) .OrderByDescending(x => x.action_date) .Skip(startRowIndex) .Take(maximumRows) .ToList(); Can somebody explain why LINQ queries the underlying table instead of the actual view, and if there is any way around this behavior?

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• Get MAC address from Jetty HTTPServletRequest

  - by Chris Thompson

  Hi all, Does anybody know if there is a way to get the sender's MAC address from an HTTPServletRequest in Jetty? (Note: by sender, I mean immediate sender aka the last hop before my server). If there isn't a direct way, does anybody know a way to translate an IP address to a MAC address in Java? Other note: I completely realize that MAC addresses do not leave the local subnet, and that's the intended functionality. I know this seems like an odd question, but trust me, I know what I'm doing :-) If you're curious, I'd be happy to explain why I want this. Thanks, Chris

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• Left Join in Subsonic 3

  - by user303187

  I'm trying to do a left join in subsonic 3 using linq but it doesn't seem to work, I get a big error. var post = from p in Post.All() join q in Quote.All() on p.ID equals q.PostID into pq where p.ID == id.Value from qt in pq.DefaultIfEmpty() select new {p, qt}; I'm using subsonic 3, latest GIT version from Rob, but I'm getting an error, see below, when I try a left join. I have searched but I didn't found any solution. Can anyone explain to me why the error and how to fix it? Thanks Expression of type 'System.Collections.Generic.IEnumerable1[GetAQuote.Post]' cannot be used for parameter of type 'System.Linq.IQueryable1[GetAQuote.Post]' of method 'System.Linq.IQueryable1[<>f__AnonymousType221[GetAQuote.Post], System.Collections.Generic.IEnumerable1%5BGetAQuote.Quote%5D, System.Linq.Expressions.Expression1[System.Func2%5BGetAQuote.Post,System.Int32%5D%5D, System.Linq.Expressions.Expression1[System.Func2%5BGetAQuote.Quote,System.Int32%5D%5D, System.Linq.Expressions.Expression1[System.Func3%5BGetAQuote.Post,System.Collections.Generic.IEnumerable1[GetAQuote.Quote],<>f__AnonymousType22%5BGetAQuote.Post,System.Collections.Generic.IEnumerable1%5BGetAQuote.Quote%5D%5D%5D%5D"GetAQuote.Post,System.Collections.Generic.IEnumerable1[GetAQuote.Quote]]] GroupJoin[Post,Quote,Int32,<f__AnonymousType22'`

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• How can HTML5 "replace" Flash?

  - by Kassini

  A topic of debate that's seen a resurgence since the unveiling of the iPad is the issue of Flash versus HTML5. There are those that suggest that HTML5 will one day supplant/replace Adobe Flash. I do not develop software that runs in a browser, so my (limited) understanding is: HTML is a pure-text markup language that is delivered over HTTP to a client browser. The client browser interprets the markup and renders (with varying degrees of success) the page according to an standard specification. Adobe Flash is a propriety framework for working with audio, video, sound and raster/vector graphics. It requires special authoring tools (a compiler perhaps?) and a custom player that's available as a plug-in to most common browsers. Could someone please explain (to this C/C++ developer) how it is possible from a technical/coding point-of-view that a text-based markup language (HTML5) could be considered a replacement to a multimedia framework (Flash)? Please no opinionated arguments - just technical facts.

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• jQuery events .load(), .ready(), .unload()

  - by Eric

  Hi folks, Just a simple question, for the jquery event. Are the .load(), .ready() and .unload() run in order when the DOM is loaded? The answer seems yes when I see the jQuery Documentation. <script type="text/javascript"> $(window).load(function () { // run code initializeCode(); }); $(document).ready(function() { //run code that MUST be after initialize }); $(window).unload(function() { Cleanup(); }); </script> However, the code inside the .ready() is execute before the initializeCode(); is execute, so I feel really strange. And now I have to place my code inside the .onload() method and just after the initializeCode(); line, which means to be inside the .ready() block. Could someone explain me more about this, as I am new to jQuery. Thank you so much.

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• yuicompressor error, not sure what is wrong?

  - by mrblah

  Hi, Very confused here, trying out the yuicompressor on a simple javascript file. My js file looks like: function splitText(text) { return text.split('-')[1]; } The error is: [INFO] Using charset Cp1252 [Error] 1:20:illegal character [Error] 1:20:syntax error [Error] 1:40:illegal character [Error] 1:49:missing ; before statement [Error] 1:50:illegal character .. .. [Error] 7:3:missing | in compound statement [error] 1:0:compilation produced 38 syntax errors ... Can someone please explain to me what is wrong?

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• Web Services: Secure? Asp.net

  - by Jacques

  Hey there, Something I can't wrap my head around is how secure web services are. For example we're writing a desktop application that will interact with data on one of our websites as well as local data. This data is sensitive though and the last thing we want is anybody calling the web services. I've not yet found anything that says web services has some kind of authentication methods and the only security I've seen people talk about is using certificates to encrypt the message. I'm no guru on this and would appreciate anyone's input and perhaps a link to somewhere that will explain this in simple terms. Thanks Jacques

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• Installing Subversion on top of already installed Apache?

  - by Majid

  Hi all, I have a working WAMP environment (Apache Friends). I decided to try Subversion and downloaded CollabNetSubversion-server-1.6.9-1.win32.exe. On the download page there were packages including Apache server which I did not use - because I didn't want to replace my current Apache installation. I just installed the one that did not include Apache, and now I want to configure it to work with my current Apache. What should I do? Is there an easy step by step tutorial to explain this?

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• (partial apply str) and apply-str in clojure's ->

  - by Jason Baker

  If I do the following: user=> (-> ["1" "2"] (partial apply str)) #<core$partial__5034$fn__5040 clojure.core$partial__5034$fn__5040@d4dd758> ...I get a partial function back. However, if I bind it to a variable: user=> (def apply-str (partial apply str)) #'user/apply-str user=> (-> ["1" "2" "3"] apply-str) "123" ...the code works as I intended it. I would assume that they are the same thing, but apparently that isn't the case. Can someone explain why this is to me?

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• Question on SyndicationItem - ASP.NET

  - by bobsmith123

  I am trying to understand how to use SyndicationItem to display feed which is RSS 2.0 or Atom compliant. What property of SyndicationItem gives me the entire description of the post. It appears that there is a Summary property but per MSDN, it gives only the Summary. Also I have noticed that in my RSS feed reader, some RSS feeds show only a few lines of description and I have to click and go to the website for the full post. But in some feeds, I can see the full post within the Feed Reader. Can someone explain how all this comes together? PS: My web page lets user enter a RSS feed address and I need to validate if the feed exists. If it does, I need to grab the last x items and show the feed's title and full description

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• How to handle both the KeyDown and KeyUp events in a Silverlight 3 TextBox

  - by sako73

  I am attaching handlers to the KeyDown and KeyUp events of a Silverlight 3 TextBox as so: _masterTextBox.KeyDown += (s, args) => { CheckForUserEnteredText(MasterTextBox.Text); args.Handled = false; }; _masterTextBox.KeyUp += (s, args) => { UpdateText(MasterTextBox.Text); }; When I comment out the KeyDown handler, then the KeyUp will trap the event, otherwise, only the KeyDown handler is triggered. Can someone explain why the KeyUp event handler is not firing after the KeyDown handler does? Thanks.

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• Slow SQLite access on iPhone

  - by georgij

  I have a quite slow data retrieval from a sqlite database on my iPhone and perhaps someone have an alternative idea to explain this. From what I tracked down so far sqlite3_step(statement) is sometimes unusually slow. While retrieving e.g. 50 rows from the database to execute this step takes normally some milliseconds but sometimes it takes several seconds. My database is not small (80MB) and my theory is that the reason is paging. But can someone else think of an other reason for this?

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• T-Sql SPROC - Parse C# Datatable to XML in Database (SQL Server 2005)

  - by Goober

  Scenario I've got an application written in C# that needs to dump some data every minute to a database. Because its not me that has written the spec, I have been told to store the data as XML in the SQL Server database and NOT TO USE the "bulk upload" feature. Essentially I just wanted to have a single stored procedure that would take XML (that I would produce from my datatable) and insert it into the database.....and do this every minute. Current Situation I've heard about the use of "Sp_xml_preparedocument" but I'm struggling to understand most of the examples that I've seen (My XML is far narrower than my C Sharp ability). Question I would really appreciate someone either pointing me in the direction of a worthwhile tutorial or helping explain things. EDIT - Using (SQL Server 2005)

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• Tooltips with infinite timeout?

  - by romkyns

  I'm thinking of setting the timeout on all my tooltips in a WinForms application to infinity (or an extremely large value). The motivation is that it's annoying for the user if the tooltip disappears while I'm still reading it, without providing any extra value whatsoever as far as I can tell. Normally I wouldn't ask something like this on StackOverflow, but the overwhelming majority of all software sets timeouts on tooltips, so it makes me wonder whether perhaps there is some important consideration I'm missing? Or is this just an old convention that nobody gives further thought to? If you would hate infinite timeout as opposed to a short timeout, please explain why. (If you just think tooltips are a bad idea altogether then that's a separate consideration; this question is specifically about the infinite timeout.)

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• C# How to Present Such Question?

  - by ikurtz

  greetings! i have a C# game program that im developing. it uses sound samples and winsock. when i test run the game most of the audio works fine but from time to time if it is multiple samples being played sequentially the application form shakes a little bit and then goes back to its old position. how do i go about debugging this or present it to you folks in a manageable manner? im sure no one is going to want the whole app code in fear of virus attacks. please guide me.. thanking you. EDIT: i have not been able to pin down any code section that produces this result. it just does and i cannot explain it. EDIT: no the x/y position are not changing. the window like shakes around a few pixels and then goes back to the position were it was before the shake.

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• "Mem Usage" higher than "VM Size" in WinXP Task Manager

  - by Frederick

  In my Windows XP Task Manager, some processes display a higher value in the Mem Usage column than the VMSize. My Firefox instance, for example shows 111544 K as mem usage and 100576 K as VMSize. According to the help file of Task Manager Mem Usage is the working set of the process and VMSize is the committed memory in the Virtual address space. My question is, if the number of committed pages for a process is A and the number of pages in physical memory for the same process is B, shouldn't it always be B = A? Isn't the number of pages in physical memory per process a subset of the committed pages? Or is this something to do with sharing of memory among processes? Please explain. (Perhaps my definition of 'Working Set' is off the mark). Thanks.

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• jsf output text with fn substring

  - by user2361862

  I want to format a date in jsf which is xmlgregoriancalendar type. I've come across post which say I need custom converter. Does anybody found solution which does not require custom date converter. I was trying following but I gives me error saying... Element type "h:outputText" must be followed by either attribute specifications, "" or "/". This is what I tried on jsf <h:outputText value="#{fn:substringBefore(aClip.lastTransmittedDate,"T")}"> <f:convertDateTime pattern="dd.MM.yyyy" /> </h:outputText> Can anybody point out the explain the error I'm getting?

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• Using core plot for iPhone, drawing date on x axis

  - by xmax

  I have available an array of dictionary that contains NSDate and NSNumber values. I wanted to plot date on X axis. for plotting I need to supply xRanges to plot with some decimal values.I don't understand how can i supply NSdate values to xRange (low and length). And what should be there in this method: -(NSNumber *)numberForPlot:(CPPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index I mean how my date value will be returned as NSNumber..? I think i should use some interval over there.but what should be the exact conversion..? can any one explain me what are the exact requirement to plot the date on xAxis..? I am plotting my plot in half of the view.

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• C++ Access violation when calling dll function

  - by Manjoor

  I have a function definition in my VC++ Win32 DLL DEMO2_API void ProcessData(char* i_buff, unsigned short i_len, char* o_buf, unsigned *o_len, unsigned short *errorCode) { __describe (i_buff,&i_len,o_buf,o_len,errorCode); } This dll function is called by a c# application. When called, it generate access violation exception. After reasearching i found, the cause for my problem. http://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/6e843243-baf4-4eb1-8a20-c691ad47762c But could not understand what exactly they are doinng in example code. Can someone explain it so me? And what would be P/Invoke signature in c# after externally allocating memory?

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• DAO, Spring and Hibernate

  - by EugeneP

  Correct me if anything is wrong. Now when we use Spring DAO for ORM templates, when we use @Transactional attribute, we do not have control over the transaction and/or session when the method is called externally, not within the method. Lazy loading saves resources - less queries to the db, less memory to keep all the collections fetched in the app memory. So, if lazy=false, then everything is fetched, all associated collections, that is not effectively, if there are 10,000 records in a linked set. Now, I have a method in a DAO class that is supposed to return me a User object. It has collections that represent linked tables of the database. I need to get a object by id and then query its collections. Hibernate "failed to lazily initialize a collection" exception occurs when I try to access the linked collection that this DAO method returns. Explain please, what is a workaround here?

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