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• WPF performance on scaling a large scene

  - by Mark

  I have a full screen app that I want to be able to zoom in on certain areas. I have the code working fine, but I notice that when I get closer in, the zoom in animation (which animates the ScaleTransform.ScaleX and ScaleTransform.ScaleY properties on a Parent canvas) starts to jerk down a little and the frame rate suffers. Im not using any BitmapEffects or anything, and ideally I would like my scene to get more complicated than it currently already is. The scene is quite large, 1980x1024, this is a requirement and cannot be changed. The current layout is like this: <Canvas x:name="LayoutRoot"> <Canvas x:Name="ContainerCanvas"> <local:MyControl x:Name="c1" /> <!-- numerous or ther controls and elements that compose the scene --> </Canvas> </Canvas> The code that zooms in just animates the RenderTransform of the ContainerCanvas, which in tern, scales its children which gives the desired effect. However, Im wondering if I need to swap out the ContainerCanvas for a ViewBox or something like that? Ive never really worked with ViewBox/Viewport controls before in WPF can they even help me out here? Smooth zooming is a huge requirement of the client and I must get this resolved. All ideas are welcome Thanks a lot Mark

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• Strange rare out-of-order data received using Indy

  - by Jim

  We're having a bizarre problem with Indy10 where two large strings (a few hundred characters each) that we send out one after the other are appearing at the other end intertwined oddly. This happens extremely infrequently. Each string is a complete XML message terminated with a LF and in general the READ process reads an entire XML message, returning when it sees the LF. The call to actually send the message is protected by a critical section around the call to the IOHandler's writeln method and so it is not possible for two threads to send at the same time. (We're certain the critical section is implemented/working properly). This problem happens very rarely. The symptoms are odd...when we send string A followed by string B what we received at the other end (on the rare occasions where we have failure) is the trailing section of string A by itself (i.e., there's a LF at the end of it) followed by the leading section of string A and then the entire string B followed by a single LF. We've verified that the "timed out" property is not true after the partial read - we log that property after every read that returns content. Also, we know there are no embedded LF characters in the string, as we explicitly replace all non-alphanumeric characters in the string with spaces before appending the LF and sending it. We have log mechanisms inside the critical sections on both the transmission and receiving ends and so we can see this behavior at the "wire". We're completely baffled and wondering (although always the lowest possibility) whether there could be some low-level Indy issues that might cause this issue, e.g., buffers being sent in the wrong order....very hard to believe this could be the issue but we're grasping at straws. Does anyone have any bright ideas?

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• Monotouch serialize UIImage

  - by cvista

  Hi I need to cache images locally and was thinking about saving them as SerializableDictionary SerializableDictionary is from: http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx I was wondering if this was a: a good way of handling caching of images (for offline mode - the data is constantly updated so pulls from the web first). b: how can i do this? I seem to be only left with the following xml: <?xml version="1.0" encoding="us-ascii"?> <dictionary> <item> <key> <string>http://img.theguidestar.com/thumb/491520.png</string> </key> <value> <UIImage xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Handle /> <Size> <Width>0</Width> <Height>0</Height> </Size> </UIImage> </value> </item> </dictionary> Is there anything specific i should be doing to make it serialize the image itself? w://

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• Create Jinja2 macros that put content in separate places

  - by Brian M. Hunt

  I want to create a table of contents and endnotes in a Jinja2 template. How can one accomplish these tasks? For example, I want to have a template as follows: {% block toc %} {# ... the ToC goes here ... #} {% endblock %} {% include "some other file with content.jnj" %} {% block endnotes %} {# ... the endnotes go here ... #} {% endblock %} Where the some other file with content.jnj has content like this: {% section "One" %} Title information for Section One (may be quite long); goes in Table of Contents ... Content of section One {% section "Two" %} Title information of Section Two (also may be quite long) <a href="#" id="en1">EndNote 1</a> <script type="text/javsacript">...(may be reasonably long) </script> {# ... Everything up to here is included in the EndNote #} Where I say "may be quite/reasonably long" I mean to say that it can't reasonably be put into quotes as an argument to a macro or global function. I'm wondering if there's a pattern for this that may accommodate this, within the framework of Jinja2. My initial thought is to create an extension, so that one can have a block for sections and end-notes, like-so: {% section "One" %} Title information goes here. {% endsection %} {% endnote "one" %} <a href="#">...</a> <script> ... </script> {% endendnote %} Then have global functions (that pass in the Jinja2 Environment): {{ table_of_contents() }} {% include ... %} {{ endnotes() }} However, while this will work for endnotes, I'd presume it requires a second pass by something for the table of contents. Thank you for reading. I'd be much obliged for your thoughts and input. Brian

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• PHP File Downloading Questions

  - by nsearle

  Hey All! I am currently running into some problems with user's downloading a file stored on my server. I have code set up to auto download a file once the user hits the download button. It is working for all files, but when the size get's larger than 30 MB it is having issues. Is there a limit on user download? Also, I have supplied my example code and am wondering if there is a better practice than using the PHP function 'file_get_contents'. Thank You all for the help! $path = $_SERVER['DOCUMENT_ROOT'] . '../path/to/file/'; $filename = 'filename.zip'; $filesize = filesize($path . $filename); @header("Content-type: application/zip"); @header("Content-Disposition: attachment; filename=$filename"); @header("Content-Length: $filesize") echo file_get_contents($path . $filename);

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• Dealing with asynchronous control structures (Fluent Interface?)

  - by Christophe Herreman

  The initialization code of our Flex application is doing a series of asynchronous calls to check user credentials, load external data, connecting to a JMS topic, etc. Depending on the context the application runs in, some of these calls are not executed or executed with different parameters. Since all of these calls happen asynchronously, the code controlling them is hard to read, understand, maintain and test. For each call, we need to have some callback mechanism in which we decide what call to execute next. I was wondering if anyone had experimented with wrapping these calls in executable units and having a Fluent Interface (FI) that would connect and control them. From the top of my head, the code might look something like: var asyncChain:AsyncChain = execute(LoadSystemSettings) .execute(LoadAppContext) .if(IsAutologin) .execute(AutoLogin) .else() .execute(ShowLoginScreen) .etc; asyncChain.execute(); The AsyncChain would be an execution tree, build with the FI (and we could of course also build one without a FI). This might be an interesting idea for environments that run in a single threaded model like the Flash Player, Silverlight, JavaFX?, ... Before I dive into the code to try things out, I was hoping to get some feedback.

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• Multiple touch problem using UITouch/UIView in iphone

  - by John Qualis

  Hi, I am trying to implement a 2-finger "pinch" and "expand" (or enlarge) on a UIView using iPhone 3G and SDK 3.1.2. I haven't done programmed in UITouch/UIEvent before, so I appreciate any guidance to the problem I am facing. When I touch the screen with 2 fingers I see that sometimes "touchesBegan" gives me only 1 event. I need UITouch event count == 2 to measure the distance between 2 fingers. Hence I have to lift up my fingers and repeat this process again till I get both fingers to be detected. Is there a way around? Can I improve it? The actual resize works correctly once both fingers are detected but this issue seen at the start needs to be resolved. I know SDK 3.2 detects gestures such as pinch but I was wondering how it can be done in 3.1.2? The code is given below. The "OnFingerDown" function gets called randomly even when I put 2 fingers down whereas I want "onTwoFingersDown" to be called each time. Moreover the I get only 1 touch event each time I put my fingers down. I mean if "OnFingerDown" was called twice I could somehow get it to work. Thanks in advance. Appreciate any help. John - (void) touchesBegan: (NSSet*) touches withEvent: (UIEvent*) event { UITouch* touch, *touch1; CGPoint location, location1; if([[event allTouches] count] == 1) { touch=[UI[[event allTouches] allObjects] objectAtIndex:0]; location=[touch locationInView:self]; OnFingerDown(location); } else if([[event allTouches] count] == 2) { touch=[[[event allTouches] allObjects] objectAtIndex:0]; location=[touch locationInView:self]; touch1=[[[event allTouches] allObjects] objectAtIndex:1]; location1=[touch1 locationInView:self]; OnTwoFingersDown(location, location1); } }

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• PHP DOM vs SimpleXML for Atom GData feed parsing

  - by Geoff Adams

  I'm building a library to access the Google Analytics Data Export API. All the data the library accesses is in Atom format and utilises numerous different namespaces throughout. My experiments with the API have used SimpleXML for parsing so far, especially as all I have been doing is accessing the data held within the feed. Now I'm coming to write a library I am wondering whether forging ahead with SimpleXML will be adequate or whether the enhanced functionality of the DOM module in PHP would be of benefit in the future. I haven't written much code for this part of the library yet so the choice is still open. I have read that the PHP DOM module can be a better choice if you need to build an XML DOM on the fly or modify an existing one, but I'm not entirely sure I would need that functionality anyway due to the nature of the API (no pushing data to the server, for instance). SimpleXML is certainly easier to use and I have seen people saying that for read-only situations it is all you need. Essentially the question is, what would you use? Compatibility will not be an issue as the server configuration will match the application's requirements. Is it worth building the library with PHP DOM in mind or should I stick with SimpleXML for now? Update: Here are two examples of the kind of feeds I will be dealing with: Account feed Data feed

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• Is an LSA MSV1_0 subauthentication package needed for some impersonation use cases?

  - by Chris Sears

  Greetings, I'm working with a vendor who has implemented some code that uses a Windows LSA MSV1_0 subauthentication package (MSDN info if you're interested: http://msdn.microsoft.com/en-us/library/aa374786(VS.85).aspx ) and I'm trying to figure out if it's necessary. As far as I can tell, the subauthentication routine and filter allow for hooking or customizing the standard LSA MSV1_0 logon event processing. The issue is that I don't understand why the vendor's product would need these capabilities. I've asked them and they said they use it to perform impersonation. The product definitely does need to do impersonation, but based on my limited win32 knowledge, they could get the functionality they need using the normal auth APIs (LsaLogonUser, ImpersonateLoggedOnUser, etc) without the subauthentication package. Furthermore, I've worked with a number of similar products that all do impersonation, and this is the only one that's used a subauthentication package. If you're wondering why I would care, a previous version of the product had a bug in the subauthentication package dll that would cause lockups or bluescreens. That makes me rather nervous and has me questioning the use of such a low-level, kernel sensitive interface. I'd like to go back to the vendor and say "There's no way you could need an LSA subauth package for impersonation - take it out", but I'm not sure I understand the use cases and possible limitations of the standard win32 authentication/impersonation APIs well enough to make that claim definitively. So, to the win32 security gurus out there, is there any reason you would need an LSA MSV1_0 subauthentication package if all you were doing is impersonation? Thanks in advance for any thoughts!

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• Pythonic mapping of an array (Beginner)

  - by scott_karana

  Hey StackOverflow, I've got a question related to a beginner Python snippet I've written to introduce myself to the language. It's an admittedly trivial early effort, but I'm still wondering how I could have written it more elegantly. The program outputs NATO phoenetic readable versions of an argument, such "H2O" - "Hotel 2 Oscar", or (lacking an argument) just outputs the whole alphabet. I mainly use it for calling in MAC addresses and IQNs, but it's useful for other phone support too. Here's the body of the relevant portion of the program: #!/usr/bin/env python import sys nato = { "a": 'Alfa', "b": 'Bravo', "c": 'Charlie', "d": 'Delta', "e": 'Echo', "f": 'Foxtrot', "g": 'Golf', "h": 'Hotel', "i": 'India', "j": 'Juliet', "k": 'Kilo', "l": 'Lima', "m": 'Mike', "n": 'November', "o": 'Oscar', "p": 'Papa', "q": 'Quebec', "r": 'Romeo', "s": 'Sierra', "t": 'Tango', "u": 'Uniform', "v": 'Victor', "w": 'Whiskey', "x": 'Xray', "y": 'Yankee', "z": 'Zulu', } if len(sys.argv) < 2: for n in nato.keys(): print nato[n] else: # if sys.argv[1] == "-i" # TODO for char in sys.argv[1].lower(): if char in nato: print nato[char], else: print char, As I mentioned, I just want to see suggestions for a more elegant way to code this. My first guess was to use a list comprehension along the lines of [nato[x] for x in sys.argv[1].lower() if x in nato], but that doesn't allow me to output any non-alphabetic characters. My next guess was to use map, but I couldn't format any lambdas that didn't suffer from the same corner case. Any suggestions? Maybe something with first-class functions? Messing with Array's guts? This seems like it could almost be a Code Golf question, but I feel like I'm just overthinking :)

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• Programatically send SMS to email using Verizon Motorola Droid on Android

  - by Dave

  Hi, I was wondering if anyone knew the proper way to send an SMS message to an e-mail address using Verizon's CDMA Motorola Droid phone. The internal messaging application appears to automagically do this. While 3rd party applications like SMSPopup don't seem to be able to properly reply to e-mail addresses unless you compose the message inside the messaging application. When the internal messaging application sends a SMS message there's a corresponding 'RIL_REQUEST_CDMA_SEND_SMS' entry in the logcat (adb logcat -b radio). When you send a SMS to an e-mail address it prints the same thing, so behind the scenes it looks as though it is sending an sms. The interesting thing is that if you look at the content provider sent box the messages are addressed to various 1270XX-XXX-XXXX numbers. On other services you can send e-mail addresses by sending a SMS to a predefined short sms number. And then formatting your SMS as emailaddress subject message i.e. http://en.wikipedia.org/wiki/SMS_gateway#Carrier-Provided_SMS_to_E-Mail_Gateways For example, using T-mobile's number (500) you can send a SMS to an e-mail using the following: SmsManager smsMgr = SmsManager.getDefault(); smsMgr.sendTextMessage("500", null, "[email protected] message sent to an e-mail address from a SMS", null, null); Does anyone know if It is possible to programatically send SMS to email messages from a CDMA Android phone? Does Verizon actually send your replies as SMS messages or are they actually sent as MMS or normal http email messages? Any ideas about how to intercept what the raw message being sent to see what's going on? It might be possible that Verizon somehow generates a fake number temporarily tied to an e-mail address (since repeated messages are not sent to the same number). But, that seems pretty heavy handed. Thanks!

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• LINQ 2 SQL: Partial Classes

  - by Refracted Paladin

  I need to set the ConnectionString for my DataContext's based on an AppSetting. I am trying to do this by creating a Partial Class for each DataContext. The below is what I have so far and I am wondering if I am overlooking something? Specifically, am I dealing with my DataContext's correctly(disposing, staleness, etc)? Doing it this way will I have issues with Updates and Inserts? Is the file BLLAspnetdb.cs useful or neccessary in the least or should all of that be in the generated partial class AspnetdbDataContext file? In short, is this an acceptable structure or will this cause me issues as I elaborate it? dbml File Name = Aspnetdb.dbml Partial Class File Name = Aspnetdb.cs partial class AspnetdbDataContext { public static bool IsDisconnectedUser { get { return Convert.ToBoolean(ConfigurationManager.AppSettings["IsDisconnectedUser"]) == true; } } public static AspnetdbDataContext New { get { var cs = IsDisconnectedUser ? Settings.Default.Central_aspnetdbConnectionString : Settings.Default.aspnetdbConnectionString; return new AspnetdbDataContext(cs); } } } My Created File Name = BLLAspnetdb.cs public class BLLAspnetdb { public static IList WorkerList(Guid userID) { var DB = AspnetdbDataContext.New; var workers = from user in DB.tblDemographics where user.UserID == userID select new { user.FirstName, user.LastName, user.Phone }; IList theWorkers = workers.ToList(); return theWorkers; } public static String NurseName(Guid? userID) { var DB = AspnetdbDataContext.New; var nurseName = from demographic in DB.tblDemographics where demographic.UserID == userID select demographic.FirstName +" " + demographic.LastName; return nurseName.SingleOrDefault(); } public static String SocialWorkerName(Guid? userID) { var DB = AspnetdbDataContext.New; var swName = from demographic in DB.tblDemographics where demographic.UserID == userID select demographic.FirstName + " " + demographic.LastName; return swName.SingleOrDefault(); } } see this previous question and the accepted answer for background on how I got to here... switch-connectionstrings-between-local-and-remote-with-linq-to-sql

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• PInvokeStackImbalance was detected when manually running Xna Content pipeline

  - by Miau

  So I m running this code static readonly string[] PipelineAssemblies = { "Microsoft.Xna.Framework.Content.Pipeline.FBXImporter" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.XImporter" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.TextureImporter" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.EffectImporter" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.XImporter" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.AudioImporters" + XnaVersion, "Microsoft.Xna.Framework.Content.Pipeline.VideoImporters" + XnaVersion, }; more code in between ..... // Register any custom importers or processors. foreach (string pipelineAssembly in PipelineAssemblies) { _buildProject.AddItem("Reference", pipelineAssembly); } more code in between ..... var execute = Task.Factory.StartNew(() => submission.ExecuteAsync(null, null), cancellationTokenSource.Token); var endBuild = execute.ContinueWith(ant => BuildManager.DefaultBuildManager.EndBuild()); endBuild.Wait(); Basically trying to build the content project with code ... this works well if you remove XImporter, AudioIMporters and VideoImporters but with those I get the following error: PInvokeStackImbalance was detected Message: A call to PInvoke function 'Microsoft.Xna.Framework.Content.Pipeline!Microsoft.Xna.Framework.Content.Pipeline.UnsafeNativeMethods+AudioHelper::GetFormatSize' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature. Things I've tried: turn unsafe code on adding a lot of logging (the dll is found in case you are wondering) different wav and Mp3 files (just in case) Will update...

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• identation control while developing a small python like language

  - by sap

  Hello, Im developing a small python like language using flex, byacc (for lexical and parsing) and C++, but i have a few questions regarding scope control. just as python it uses white spaces (or tabs) for identation, not only that but i want to implement index breaking like for instance if you type "break 2" inside a while loop thats inside another while loop it would not only break from the last one but from the first loop as well (hence the number 2 after break) and so on. example: while 1 while 1 break 2 end end #after break 2 it would jump right here but since i dont have an "anti" tab character to check when a scope ends (like C for example i would just use the '}' char) i was wondering if this method would the the best: i would define a global variable, like "int tabIndex" on my yacc file that i would access in my lex file using extern. then everytime i find a tab character on my lex file i would increment that variable by 1. when parsing on my yacc file if i find a "break" keyword i would decrement by the amount typed after it from the tabIndex variable, and when i reach and EOF after compiling and i get a tabIndex != 0 i would output compilation error. now the problem is, whats the best way to see if the identation got reduced, should i read \b (backspace) chars from lex and then reduce the tabIndex variable (when the user doesnt use break)? another method to achieve this? also just another small question, i want every executable to have its starting point on the function called start() should i hardcode this onto my yacc file? sorry for the long question any help is greatly appretiated. also if someone can provide an yacc file for python would be nice as a guideline (tried looking on google and had no luck). thanks in advance.

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• Authlogic, logout and credential capture

  - by Paddy

  Ok this is something weird. I got authlogic-oid installed in my rails app today. Everything works perfectly fine but for one small nuisance. This is what i did: I first register with my google openid. Successful login, redirection and my email, along with my correct openid is stored in my database. I am happy that everything worked fine! Now when i logout, my rails app as usual destroys the session and redirects me back to my root url where i can login again. Now if i try to login it still remembers my last login id. Not a big issue as i can always "Sign in as a different user" but i am wondering if there is anyway to not only logout from my app but also logout from google. I noticed the same with stack overflow's openid authentication system. Why am i so bothered about this, you may ask. But is it not a bad idea if your web apps end user, who happens to be in a cyber cafe, thinks he has logged out from your app and hence from his google account only to realize later that his google account had got hacked by some unworthy loser who just happened to notice that the one before had not logged out from google and say.. changed his password!! Should i be paranoid?

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• Linq - Orderby not ordering

  - by Billy Logan

  Hello everyone, I have a linq query that for whatever reason is not coming back ordered as i would expect it to. Can anyone point me in the right direction as to why and what i am doing wrong? Code is as follows: List<TBLDESIGNER> designer = null; using (SOAE strikeOffContext = new SOAE()) { //Invoke the query designer = AdminDelegates.selectDesignerDesigns.Invoke(strikeOffContext).ByActive(active).ByAdmin(admin).ToList(); } Delegate: public static Func<SOAE, IQueryable<TBLDESIGNER>> selectDesignerDesigns = CompiledQuery.Compile<SOAE, IQueryable<TBLDESIGNER>>( (designer) => from c in designer.TBLDESIGNER.Include("TBLDESIGN") orderby c.FIRST_NAME ascending select c); Filter ByActive: public static IQueryable<TBLDESIGNER> ByActive(this IQueryable<TBLDESIGNER> qry, bool active) { //Return the filtered IQueryable object return from c in qry where c.ACTIVE == active select c; } Filter ByAdmin: public static IQueryable<TBLDESIGNER> ByAdmin(this IQueryable<TBLDESIGNER> qry, bool admin) { //Return the filtered IQueryable object return from c in qry where c.SITE_ADMIN == admin select c; } Wondering if the filtering has anything to do with it?? Thanks in advance, Billy

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• Add a custom variable to an email header already within a gmail inbox

  - by Ali

  Hi guys - this may seem odd but I was wondering if it was possible to add custom header details to emails already in an inbox. Like lets say I wish to add in the Header of the email something like - myvariable = myvalue and then be able to query it somehow. I'm looking at code from Iloha mail and most of the details like subject and from recieved etc are in the headers and you can search through them. SO is it possible to add my own custom variable to an email header and query it in the same way? How can it be done using php? EDIT ==================== Thanks I know how you can modify the headers of sent messages plus also query for custom variables in message headers however in this case I want to know if it would be possible to add a custom variable in a recieved message already in my inbox. Actually let me define the situation here. I'm working on a google apps solution which requires maintaining references to emails. Basically the application is as such that when an email comes in - we create an order from that email and wish to maintain a reference to that EXACT email by some kind of identifier which would enable us to identify that email. The fact is that we don't want to download the emails in a database and maintain a separate store as we would want to keep all the emailing on GMAIL. We just need: A way to be able to 'link' to a specific email permanently - the UID is just a sequence number and not very reliable. We couldn't find any property of emails that could function as a unique ID or primary key and so we thought if we could instead generate a key on our end and store it in a custom variable on the email itself. However it seems unfortunately that there isn't a way to manipulate headers of an already existing email. :( is there any solution to this problem I could use any IDEA !

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• Can push technology / comet be faked?

  - by stef

  Client has a dating site and would like to have a popup (either a nice javascript overlay or a new browser window popup. we're flexible.) displayed to users when another user is visiting their page. I'm familiar with push technology and Comet but it's quite challenging to implement this and may place serious strain on a server with over 100,000 unique visitors per day. I'm wondering if there is a way of faking this, perhaps by not being accurate to the second. I can't really think of any way. This is a classic LAMP environment. Anyone? EDIT: what about this: placing an iframe on the page that refreshes every few seconds and at each page load it checks in the db if a visitor has been logged on this profile page. if so, it shows a message. the message would be visible but the background of the iframe would blend in with the background of the site and be invisible. if the message fades in and out, it would look like a JS box "popping up".

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• Alternatives to Java for Android development?

  - by paul.meier

  Hey all, I've started developing Android apps a couple of months ago, and have a few under my belt. While I can tolerate Java enough to keep developing, I was wondering what success the community has had getting other languages to run. I've done some investigation as to how other JVM languages work, and it appears Dalvik messes them up pretty hard. Clojure seems unable to run, Scala seems to be one of the most successful. JRuby has also had some luck, but they caution against anything major. I've also checked out Scheme via Moby and Kawa, both of which seem to have some promise. What luck have any of you had? Languages I'm missing, misrepresenting? Any non-"Hello World" apps you've written in non-Java? Any snags in trying to get another language to run (e.g. "as long as you don't use continuations, you're fine in X Scheme"). Any particular snags in developing apps non-Java, once you get them to run? Thanks, hope you well ^_^

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• Storing statistics of multple data types in SQL Server 2008

  - by Mike

  I am creating a statistics module in SQL Server 2008 that allows users to save data in any number of formats (date, int, decimal, percent, etc...). Currently I am using a single table to store these values as type varchar, with an extra field to denote the datatype that it should be. When I display the value, I use that datatype field to format it. I use sprocs to calculate the data for reporting; and the datatype field to convert to the appropriate datatype for the appropriate calculations. This approach works, but I don't like storing all kinds of data in a varchar field. The only alternative that I can see is to have separate tables for each datatype I want to store, and save the record information to the appropriate table based on datatype. To retreive, I run a case statement to join the appropriate table and get the data. This seems to solve. This however, seems like a lot of work for ... what gain? Wondering if I'm missing something here. Is there a better way to do this? Thanks in advance!

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• PHP Multiple Calls to Server Share Objects?

  - by user1513171

  I’m wondering this about PHP on Apache. Do multiple calls to the server from different users—could be sitting next to each other, in different states, different countries, etc…—share memory? For example, if I create a static variable in a PHP script and set it to 1 by default, then user1 comes in and it changes to 2, and then almost at the exactly same time, user2 comes in, does he see that static variable with a value of 1 or 2? An even better example is this class I have in PHP: class ApplicationRegistry { private static $instance; private static $PDO; private function __construct() { self::$PDO = $db = new \PDO('mysql:unix_socket=/........'); self::$PDO->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION); } static function instance() { if(!isset(self::$instance)) { self::$instance = new self(); } return self::$instance; } static function getDSN() { if(!isset(self::$PDO)) { self::instance(); return self::$PDO; } return self::$PDO; } } So this is a Singleton that has a static PDO instance. If user1 and user2 are hitting the server at the exact same time are they using different instances of PDO or are they using the same one? This is a confusing concept for me and I'm trying to think of how my application will scale.

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• jQuery cycle plugin customizing

  - by spirax

  I'm using the jQuery Cycle plugin to start a slidshow of images when hovering over the initial image. This works fine. What I want after that is to have the slideshow stop when hovered off, and have a manual slideshow (next/prev buttons) start. This currently works, but the slideshow starts from the beginning each time it's initialized. I want it to begin at the current image that's loaded. I was playing around with getting the image's index from the DOM (as it's the only one with display:block) and using the option 'startingSlide' to resume it, but my index keeps returning as -1. jQuery('#home-menu li').hover(function() { setImages(jQuery(this).attr('title'), jQuery(this).find('.subtitle').text()); jQuery('#main .blog #projects .gallery .slideshow').cycle( { fx: 'scrollHorz', easing: 'easeOutBounce', speed: 2000, delay: 0 }); }, function() { // Before loading the images for the clickable slideshow, find the current image in the DOM array to use as the starting position slideshowStart = jQuery('.gallery .slideshow img:visible').index(this); console.log('Index: ' + slideshowStart); setImages(jQuery(this).attr('title'), jQuery(this).find('.subtitle').text()); jQuery('#main .blog #projects .gallery .slideshow').cycle('stop').cycle( { fx: 'scrollHorz', easing: 'easeOutBounce', startingSlide: slideshowStart, speed: 2000, timeout: 0, next: "#main .blog #projects .gallery span.span2", prev: "#main .blog #projects .gallery span.span1" }); }); setImages() just loads images into the DOM based on what li is being hovered over. Nothing special there. I want the image to be resumed when hovered over and hovered off. I've left out the resume part for hover on for the moment while I was trying to get it working - In case you were wondering.

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• Javascript Square bracket notation for global variables

  - by Yousuf Haider

  I ran into an interesting issue the other day and was wondering if someone could shed light on why this is happening. Here is what I am doing (for the purposes of this example I have dumbed down the example somewhat): I am creating a globally scoped variable using the square bracket notation and assigning it a value. Later I declare a var with the same name as the one I just created above. Note I am not assigning a value. Since this is a redeclaration of the same variable the old value should not be overriden as described here: http://www.w3schools.com/js/js_variables.asp //create global variable with square bracket notation window['y'] = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows New instead of Old The problem is that the old value actually does get overriden and in the above eg. the alert shows 'new' instead of 'old'. Why ? I guess another way to state my question is how is the above code different in terms of semantics from the code below: //create global variable var y = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows New instead of Old

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• To (monkey)patch or not to (monkey)patch, that is the question

  - by gsakkis

  I was talking to a colleague about one rather unexpected/undesired behavior of some package we use. Although there is an easy fix (or at least workaround) on our end without any apparent side effect, he strongly suggested extending the relevant code by hard patching it and posting the patch upstream, hopefully to be accepted at some point in the future. In fact we maintain patches against specific versions of several packages that are applied automatically on each new build. The main argument is that this is the right thing to do, as opposed to an "ugly" workaround or a fragile monkey patch. On the other hand, I favor practicality over purity and my general rule of thumb is that "no patch" "monkey patch" "hard patch", at least for anything other than a (critical) bug fix. So I'm wondering if there is a consensus on when it's better to (hard) patch, monkey patch or just try to work around a third party package that doesn't do exactly what one would like. Does it have mainly to do with the reason for the patch (e.g. fixing a bug, modifying behavior, adding missing feature), the given package (size, complexity, maturity, developer responsiveness), something else or there are no general rules and one should decide on a case-by-case basis ?

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• Add a background color to text, but with space blank space between lines of paragraph

  - by Chris

  Hi, I was wondering if something was possible to do in CSS. Basically i want to recreate the text on the RHS of the image using html/css, but currently I'm getting the LHS of the image. The HTML: <div id="banner"> <div id="text"> <p>This is an example of what I have</p> </div> </div> The CSS: div#banner { background: green; width:300px; height:300px;} div#text { margin: 20px auto; } div#text p { background:#fff; padding: 5px; margin: 5px; font-size: 2em; } Now I realise that this can be done already either by: Using an image Using separate p tags (By Point 2 I mean: <div id="banner"> <div id="text"> <p>This is an</p> <p>example of</p> <p>what I have</p> </div> </div> ) But what I would really like to know is if it's actually possible to do what is on the RHS of the image, using only css and a single p tag?

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