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  • Why did this work? ( php dot notation )

    - by Daniel
    Hi, I was writing some php code after a long sint doing ruby and I accidently wrote this: [root@ip-10-160-47-98 test]# cat run.php <?php class MyTest { public function run() { var_dump(this.test); } } $object = new MyTest(); $object->run(); [root@ip-10-160-47-98 test]# php run.php string(8) "thistest" [root@ip-10-160-47-98 test]# Now, this.test should have been $this-test, but the compiler was actually happy to let this run. Does anyone know how (this.test) got converted into a string "thistest"? Compiled and run on php 5.3.2 amazon instance ami-e32273a6 (CentOS 5.4) -daniel

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  • How to properly use Gearman with my PHP application?

    - by luckytaxi
    For now I just want to use Gearman for background processing. For example, I need to email a recipient that they have a private message waiting for them once the sender submits their message into the DB. I assume I can run the worker/client and server on my primary server but I have no problems offloading some of the tasks to a different web server. Anyways, my question is how do I handle multiple "functions?" Let's say I need a job that handles the email portion and a job to handle image manipulation. Can I have multiple functions in the worker? I've followed a couple of examples I found online but each example only shows one function being initialized. Do I have to start up multiple "workers" to handle multiple functions?

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  • MySQL - How To Avoid Repair With Keycache?

    - by dvancouver
    I have had some experience with optimizing the my.cnf file but my database has around 4 million records (MyISAM). I am trying to restore from a mysqldump but every time I do I eventually get the dreaded "Repair With Keycache", that may take days. Is there anyway to get past this and let it roll as "Repair By Sorting"? I have 2GB RAM, Dual Cores, lots of extra hard-drive space. Snip out of my.cnf: set-variable = max_connections=650 set-variable = key_buffer=256M set-variable = myisam_sort_buffer_size=64M set-variable = join_buffer=1M set-variable = record_buffer=1M set-variable = sort_buffer_size=2M set-variable = read_buffer_size=2M set-variable = query_cache_size=32M set-variable = table_cache=1024 set-variable = thread_cache_size=256 set-variable = wait_timeout=7200 set-variable = connect_timeout=10 set-variable = max_allowed_packet=16M set-variable = max_connect_errors=10 set-variable = thread_concurrency=8

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  • How can I make my Ruby on Rails 2.3.4 application "Rails 3-ready"

    - by marcgg
    I'm developing an application with Ruby on Rails that I want to maintain for at least a few years, so I'm concerned about the next version coming up soon. Going from Rails 1 to Rails 2 was such a big pain that I didn't bother and froze my gems and let the application die, alone, in the dark. On this project I don't want to do that. First because this new version looks awesome, but also because this application may turn into a real product. How can I prepare my application so that it will be upgradable with as little changes as possible. How time consuming do you think switching version will be? And what about my server? Deployment? I'm already looking at deprecation notices... what else can I do?

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  • jQuery plugin options: required, optional, inaccessible

    - by Trevor Hartman
    I'm curious how to specify options to a jQuery plugin in a way that some are required, some are optionally overridden, and some can't be touched. I started off with the usual: jQuery.fn.plugin = function (options){ var defaults = { username: "", posts:10, api: "http://myapi.com" } var settings = jQuery.extend({}, defaults, options); } Let's say I want username to be required, posts is optional (defaults to 10) and you (you being the user of the plugin) can't change api, even if they try. Ideally, they'd all still be in the same data structure instead of being split into separate objects. Ideas?

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  • Removing active class and adding it to a sibling

    - by Kyle
    Currently, I have a jQuery Cycle plugin that allows the image to scroll. With it's callback I am calling this function function onAfterVideoScroll() { $('.myRemote.active').removeClass("active").next().addClass("active"); } This SHOULD be removing the current class from another set of links, and adding the class to the it's next sibling. This is to keep whichever image is showing it's button predecessor will be active so the user can tell which button is currently showing on the slideshow. If this makes sense, please let me know why it will remove the active class but it never gives the sibling the active class. Thanks!

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  • XQuery - problem with recursive function

    - by H4mm3rHead
    Hi all, Im new on this project and am going to write, what i thought was a simple thing. A recursive function that writes nested xml elements in x levels (denoted by a variable). So far I have come up with this, but keeps getting a compile error. Please note that i have to generate new xml , not query existing xml: xquery version "1.0"; declare function local:PrintTest($amount) { <test> { let $counter := 0 if ($counter <= $amount ) then local:PrintTest($counter) else return $counter := $counter +1 } </test> }; local:PrintPerson(3) My error is: File Untitled1.xquery: XQuery transformation failed XQuery Execution Error! Unexpected token - " ($counter <= $amount ) t" I never understood xquery, and cant quite see why this is not working (is it just me or are there amazingly few resources on the Internet concerning XQuery?)

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  • ASP.NET Request.ServerVariables["SERVER_PORT_SECURE"] and proxy SSL by load balancer

    - by frankadelic
    We have some legacy ASP.NET code that detects if a request is secure, and redirects to the https version of the page if required. This code uses Request.ServerVariables["SERVER_PORT_SECURE"] to detect if SSL is needed. Our operations team has suggested doing proxy SSL at the load balancer (F5 Big-IP) instead of on the web servers (assume for the purposes of this question that this is a requirement). The consequence would be that all requests appear as HTTP to the web server. My question: how can we let the web servers known that the incoming connection was secure before it hit the load balancer? Can we continue to use Request.ServerVariables["SERVER_PORT_SECURE"]? Do you know of a load balancer config that will send headers so that no application code changes are needed?

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  • Throwing Exception in CTOR and Smart Pointers

    - by David Relihan
    Is it OK to have the following code in my constructor to load an XML document into a member variable - throwing to caller if there are any problems: MSXML2::IXMLDOMDocumentPtr m_docPtr; //member Configuration() { try { HRESULT hr = m_docPtr.CreateInstance(__uuidof(MSXML2::DOMDocument40)); if ( SUCCEEDED(hr)) { m_docPtr->loadXML(CreateXML()); } else { //throw exception to caller } } catch(...) { //throw exception to caller } } Based on Scott Myers RAII implementations in More Effective C++ I believe I am alright in just allowing exceptions to be thrown from CTOR as I am using a smart pointer(IXMLDOMDocumentPtr). Let me know what you think....

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  • Will pool the connection help threading in sqlite (and how)?

    - by mamcx
    I currently use a singleton to acces my database (see related question) but now when try to add some background processing everything fall apart. I read the sqlite docs and found that sqlite could work thread-safe, but each thread must have their own db connection. I try using egodatabase that promise a sqlite wrapper with thread safety but is very buggy, so I return to my old FMDB library I start to see how use it in multi-thread way. Because I have all code with the idea of singleton, change everything will be expensive (and a lot of open/close connections could become slow), so I wonder if, as the sqlite docs hint, build a pooling for each connection will help. If is the case, how make it? How know wich connection get from the pool (because 2 threads can't share the connection)? I wonder if somebody already use sqlite in multu-threading with NSOperation or similar stuff, my searching only return "yeah, its possible" but let the details to my imagination...

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  • ArrangeOverride Vs Storyboard Animation

    - by user275561
    Now I may not grasp the idea or this could be a mistake so feel free to correct me. I am doing a bubble breaker game in Silverlight. So when a bubble in a column gets bursted. I want to animate the above bubbles to simulate that they are being dropped. Each bubble knows its Row and column location and that gets updated in the View Model. Now my question is, Should I call invalidateArrange() on the Canvas from the ViewModel so it rearranges the bubbles or just have a storyboard animate the TranslateY. In my arrangeOverride Method I have something like this Rect childBounds = new Rect(CalculateLeft(dataContext.Column), CalculateTop(dataContext.Row), BubbleSize, BubbleSize); child.Arrange(childBounds); If there is a better way let me know. I am trying to learn the best practices.

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  • Next track or shuffle in M3U playlist?

    - by Benjamin Oakes
    I have a M3U playlist that has URLs for some MP3s around the web. It's on a server so I can open it on other computers and my iPhone. Unfortunately, all the players I've tried don't let me hit the "next" button to go to the next song in the playlist. Is there a way to specify that ability in the M3U file? Or, if not that, can I make a media player automatically shuffle the playlist? I could always make a script to shuffle it myself, but I'd like to use something built into M3U if it exists.

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  • C, Cygwin, and compiling drand and srand

    - by Kaytiana
    Hello, I have a C code which I am trying to compile in Cygwin and which contains both the drand() and srand() functions. I had Windows Vista with Cygwin installed and the code seemed to comile fine, but my computer broke and I had to get a new one. The new computer has Windows 7 64-bit version. I had a few issues downloading Cygwin but finally managed to do it by only selecting a few packages and then have been trying to get the rest that I need. The problem is I don't have the help I had installing it on my other computer so I don't know which packages I actually need, so I have just been guessing (all the gcc ones) but I mustn't have the one I need for srand and drand to work. If anyone could point me in the right direction, and also possibly just let me know which packages I need to compile C so I can check I have them all that would be great. Thanks a lot in advance for any help. Sorry, that was a lot of words! Kaytiana

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  • 2D World design question

    - by Maciek
    I'm facing a problem which is probably extremely common in game-design. Let's assume that we've got a 2D world The world's size is M x N rect The world may contain some items in it The items have (x,y) coords The world can be browsed via a window that is physically (m x n) large. The browser window can be zoomed in / out The browser window can be panned up/down + left right, while in the extents of the world's rect. How should I go about implementing this? I'm especially concerned about the browser window. Can anyone recommend any good reads ? This is not a homework - it's more of a task which I've set myself to complete.

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  • Merging two templates in iText

    - by Shaggy Frog
    Let's say I have two PDF templates created with Adobe Acrobat, which are both single-page, 8.5x11 documents. The first template (A.pdf) has content for the top half of the page. The second template (B.pdf) has content for the bottom half of the page. (It just so happens the content in both templates does not "overlap" each other.) I would like to use iText to take these two templates and create a single, "merged" template from it (C.pdf) that is only a single page (with A.pdf's content on the top half and B.pdf's content on the bottom half). (I do not want to "merge" these two files into a 2-page document. I need the final product to be a single page.) I will be running iText in a servlet environment (Tomcat 6) but I don't think that makes a difference to the answer. Is this possible?

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  • Repeater ItemDataBound Complete Trigger

    - by OliverS
    Hi I have a Repeater and I am doing various things during the ItemDataBound event. My Repeater is in a control. What I am noticing is that the things that are supposed to happen in the ItemDataBound event happen after the Page_Load of the page hosting the control. Is there a way to use some sort of ItemDataBoundComplete trigger so I can do other things on my page after the events of the ItemDataBound have taken place? Thanks, please let me know if I have not been clear. [Edit] I have controls that are being bound to the ItemDataBound and they are not available until after the Page_Load for the page hosting the control. [Solution] (In my case): In my page I used the following: Control.Page.LoadComplete += new EventHandler(Control_LoadComplete); Then I performed what I had to do in that event.

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  • Dynamic web user control problem when browser's back button is clicked.

    - by White_Sox
    Hi all, I have an .aspx page in which I dynamically add web controls to a panel. The problem is when I hit the browser's back buton, it's displayed a version of the page that no longer exists on the server-side, because the controls are dynamically added. Let's say my aspx dynamically adds Control1. From there, I click a button that loads Control2. At this moment, if I press the browser's back button, it will display the page with Control1, but Control1 no longer exists on the server-side, so if I interact with it, some erractic behaviour will occur. Any ideas on this? Thank you very much.

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  • My headset doesn't work [closed]

    - by Kristian Flatheim Jensen
    Hello! I am not sure if this question fits on this site :S if it doesn't please let me know and i remove it :) well... here is my problem I just got a steel series headset for christmas(yay!) and i quickly plugged it into my MacBook Pro. The audio output works fine, but i am having issues with the audio input :( i had these kinds of problems before and i think my mac may be broken :( but then i saw this post: http://www.biloca.com/blog/?p=25 and they talked about some power issues to the microphone on the Mac Mini... I did not quite get what they were discussing so i have a simple question :) Do any of you have an idea why my microphone doesn't work? Please help! :) Best Regards Kristian

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  • Computationally simple Pseudo-Gaussian Distribution with varying mean and standard deviation?

    - by mstksg
    This picture from wikipedia has a nice example of the sort of functions I'd ideally like to generate http://en.wikipedia.org/wiki/File:Normal_Distribution_PDF.svg Right now I'm using the Irwin-Hall Distribution, which is more or less a Polynomial approximation of the Gaussian distribution...basically, you use uniform random number generator and iterate it x times, and take the average. The more iterations, the more like a Gaussian Distribution it is. It's pretty nice; however I'd like to be able to have one where I can vary the mean. For example, let's say I wanted a number between the range 0 and 10, but around 7. Like, the mean (if I repeated this function multiple times) would turn out to be 7, but the actual range is 0-10. Is there one I should look up, or should I work on doing some fancy maths with standard Gaussian Distributions?

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  • Utilise Surv object in ggplot or lattice

    - by Misha
    Anyone know how to take advantage of ggplot or lattice in doing survival analysis? It would be nice to do trellis/facet like survival graphs. So in the end I played around and sort of found a solution for a kaplan meier plot. Apologize for the messy code in taking the list elements into a dataframe, but I couldnt figure out another way. Note: It only works with two levels of stratum. If anyone know how I can use x<-length(stratum) to do this please let me know (in stata I could append to a macro-unsure how this works in R)... ggkm<-function(time,event,stratum) { m2s<-Surv(time,as.numeric(event)) fit <- survfit(m2s ~ stratum) f$time<-fit$time f$surv<-fit$surv f$strata<-c(rep(names(fit$strata[1]),fit$strata[1]),rep(names(fit$strata[2]),fit$strata[2])) f$upper<-fit$upper f$lower<-fit$lower r<-ggplot (f,aes(x=time,y=surv,fill=strata,group=strata))+geom_line()+geom_ribbon(aes(ymin=lower,ymax=upper),alpha=0.3) return(r) }

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  • VIrtual class problem

    - by ugur
    What i think about virtual class is, if a derived class has a public base, let's say, class base, then a pointer to derived can be assigned to a variable of type pointer to base without use of any explicit type conversion. But what if, we are inside of base class then how can we call derived class's functions. I will give an example: class Graph{ public: Graph(string); virtual bool addEdge(string,string); } class Direct:public Graph{ public: Direct(string); bool addEdge(string,string); } Direct::Direct(string filename):Graph(filename){}; When i call constructor of Direct class then it calls Graph. Now lets think Graph function calls addedge. Graph(string str){ addedge(str,str); } When it calls addedge, even if the function is virtual, it calls Graph::edge. What i want is, to call Direct::addedge. How can it be done?

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  • Virtual class problem

    - by ugur
    What i think about virtual class is, if a derived class has a public base, let's say, class base, then a pointer to derived can be assigned to a variable of type pointer to base without use of any explicit type conversion. But what if, we are inside of base class then how can we call derived class's functions. I will give an example: class Graph{ public: Graph(string); virtual bool addEdge(string,string); } class Direct:public Graph{ public: Direct(string); bool addEdge(string,string); } Direct::Direct(string filename):Graph(filename){}; When i call constructor of Direct class then it calls Graph. Now lets think Graph function calls addedge. Graph(string str){ addedge(str,str); } When it calls addedge, even if the function is virtual, it calls Graph::edge. What i want is, to call Direct::addedge. How can it be done?

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  • Rails: Skinny Controller vs. Fat Model, or should I make my Controller Anorexic?

    - by Nick Gorbikoff
    I know similar questions have been answered before - such as: Where should logic go, where to do certain tasks, etc. But I have a more specific question - How far should I take this axiom: "keep your controller skinny, make your model fat!" Here is an example: For instance let's say I have multiple source of verification data. A good example would be a VIN number - I can verify it against, manufacturers data source, DMV's data source, also my local databases - to see what I have on record. So I have a model called Vin and vins_controller. Inside the model I have 5 methods: check_against_local_db, check_against_dmv, check_against_car_maker_1, check_against_car_maker_2, etc. In my controller keeping with the REST, in action show - I have a simple case statement which looks at the params[:source], and based on source specified - will call specific check method. Now here is the question: Should I leave the logic that governs which data source to call in controller or should I move it to model and then in controller just do something like check_vin(source, vin)? Should I make my controller anorexic?

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  • Excluding files from being deployed with Capistrano while still under version control with Git

    - by Jimmy Cuadra
    I want to start testing the JavaScript in my Rails apps with qUnit and I'm wondering how to keep the test JavaScript and test runner HTML page under version control (I'm using Git, of course) but keep them off the production server when I deploy the app with Capistrano. My first thought is to let Capistrano send all the code over as usual including the test files, and write a task to delete them at the end of the deployment process. This seems like sort of a hack, though. Is there a cleaner way to tell Capistrano to ignore certain parts of the repository when deploying?

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  • How to display HTML after video play finishes?

    - by KPL
    Hello people, I am new here. I would like to know how can I display HTML code after a video is finished playing. I am using FlowPlayer (http://www.flowplayer.org) . I have tried to achieve this using JW Flash Player (http://www.longtailvideo.com/players/jw-flv-player/), but was unable figure out anything. Also, let me know if it's possible or not. And if it is, please share with me and everybody on StackOverflow. P.S. I am using PHP.

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