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  • Calling blockUI and unblockUI in combination with jQuery validator plugin

    - by Tim Stewart
    I have a very complex form with the validation working correctly. However, since it can take awhile for the validation to complete, I'd like to use blockUI to be called when I click the form's submit button to prevent confusion and double-submissions. I can't quite figure out how to do this. My code looks like this: $("#credential").validate({ rules: { EngId: { required: true } ClientAccount: { required: true } ... } and I'm calling the validation with several buttons (using their click function) depending on selections in the form, often disabling some of the rules: $("#buttonname").click(function() { $("#fieldname").rules("remove"); ... $("#credential").submit(); }); What I can't figure out is where the blockui and unblockui calls would go so that when the user clicks the button, before validation starts, blockui does its magic, and if the validation finds a problem, unblockui is called and enables the form again. I'm pretty new to Jquery and I can't find any examples that I've been able to implement successfully. I would appreciate any help anyone could give (please excuse if this has been covered before).

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  • WCF InProcFactory error

    - by Terence Lewis
    I'm using IDesign's ServiceModelEx assembly to provide additional functionality over and above what's available in standard WCF. In particular I'm making use of InProcFactory to host some WCF services within my process using Named Pipes. However, my process also declares a TCP endpoint in its configuration file, which I host and open when the process starts. At some later point, when I try to host a second instance of this service using the InProcFactory through the named pipe (from a different service in the same process), for some reason it picks up the TCP endpoint in the configuration file and tries to re-host this endpoint, which throws an exception as the TCP port is already in use from the first hosting. Here is the relevant code from InProcFactory.cs in ServiceModelEx: static HostRecord GetHostRecord<S,I>() where I : class where S : class,I { HostRecord hostRecord; if(m_Hosts.ContainsKey(typeof(S))) { hostRecord = m_Hosts[typeof(S)]; } else { ServiceHost<S> host; if(m_Singletons.ContainsKey(typeof(S))) { S singleton = m_Singletons[typeof(S)] as S; Debug.Assert(singleton != null); host = new ServiceHost<S>(singleton,BaseAddress); } else { host = new ServiceHost<S>(BaseAddress); } string address = BaseAddress.ToString() + Guid.NewGuid().ToString(); hostRecord = new HostRecord(host,address); m_Hosts.Add(typeof(S),hostRecord); host.AddServiceEndpoint(typeof(I),Binding,address); if(m_Throttles.ContainsKey(typeof(S))) { host.SetThrottle(m_Throttles[typeof(S)]); } // This line fails because it tries to open two endpoints, instead of just the named-pipe one host.Open(); } return hostRecord; }

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  • Record/Playback with AudioQueue on iPhone

    - by Biranchi
    Hi, I am currently using Audio Queues on the iPhone to record and playback audio. What I would like to be able to do is to record some audio, allow the user to pause the record queue, and to seek back and forward through the audio to select a position from where they can start recording from again. I have got over the seeking issue by making the playback AudioQueueBuffer sizes small enough so that the play audio queue callback happens at a rate that allows the user to use a slider control to hear the audio as they adjust the slider back and forth. I think I can achieve the recording at a new position by setting the inStartingPacket parameter of the AudioFileWritePackets function that I call from the Audio Recording Queue callback. The trouble is this only inserts audio over the previously recorded audio. The file length obviously doesn't change so if the user were to go backwards and record less audio than before, the old audio still remains after the end of the newly recorded audio. Is there a way I can get the AudioFile to truncate at the point the user starts to insert the new audio, is there some other way I can remove the old audio starting at the insert position or is there a better way about going about this task? Thanks

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  • Maintain aspect ratio on browser window resize?

    - by Anthony
    I have a simple page with images, and when the user clicks the image, it opens up a new browser window with the image filling the area. I have the css set on the new window so that the image height and width are both 100% (and overflow is set to hidden) so that the window can be resized. But what I need is for the window to maintain aspect ratio if the user resizes it. Right now, I'm stuck because I'm not getting how the event works, but I think I'm making this harder than it needs to be. Right now I have: $(function(){ $(window).resize(function() { var height = $(this).attr("innerHeight"); var width = $(this).attr("innerWidth"); if(height/width != .75){ window.resizeTo(width,width*.75); } }); }); Before I added the conditional, the window would immediately start shrinking (apparently opening a new window fires the resize event). Adding the conditional preventing this from happening when the window opens, but any resizing starts the shrinking again. Is it just because the height and width are never exactly the right ratio (should I manually set the width to a round number ever time) or is there something else I'm doing wrong? Or is there some other way to get what I'm after that's more straightforward?

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  • multithreading in c#

    - by Lalit Dhake
    Hi, I have console application. In that i have some process that fetch the data from database through different layers ( business and Data access). stores the fetched data in respective objects. Like if data is fetched for student then this data will store (assigned ) to Student object. same for school. and them a delegate call the certain method that generates outputs as per requirement. This process will execute many times say 10 times. Ok? I want to run simultaneously this process. not one will start, it will finish and then second will start. I want after starting 1'st process, just 2'nd , 3rd....10'th must be start. Means it should be multithreading. how can i achieve this ? is that will give me error while connection with data base open and close ? I have tried this concept . but when thread 1'st is starting then data will fetched for thread 1 will stored in its respective (student , school) objects. ok? when simultaneous 2'nd thread starts , but the data is changing of 1'st object ,while control flowing in program. What have to do?

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  • Problems with MediaPlayer, raw resources, stop and start

    - by arakn0
    Hello everybody, I'm new in Android development and I have the next question/problem. I'm playing around with the MediaPlayer class to reproduce some sounds/music. I am playing raw resources (res/raw) and it looks kind of easy. To play a raw resource, the MediaPlayer has to be initialized like this: MediaPlayer mp = MediaPlayer.create(appContext, R.raw.song); mp.start(); Until here there is no problem. The sound is played, and everything works fine. My problem appears when I want to add more options to my application. Specifically when I add the "Stop" button/option. Basically, what I want to do is...when I press "Stop", the music stops. And when I press "Start", the song/sound starts over. (pretty basic!) To stop the media player, you only have to call stop(). But to play the sound again, the media player has to be reseted and prepared. mp.reset(); mp.setDataSource(params); mp.prepare(); The problem is that the method setDataSource() only accepts as params a file path, Content Provider URI, streaming media URL path, or File Descriptor. So, since this method doesn't accept a resource identifier, I don't know how to set the data source in order to call prepare(). In addition, I don't understand why you can't use a Resouce identifier to set the data source, but you can use a resource identifier when initializing the MediaPlayer. I guess that I'm missing something. I wonder if I am mixing concepts, and the method stop() doesn't have to be called in the "Stop" button. Any help? Thanks in advanced!!!

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  • Delphi threads deadlock

    - by Lobuno
    Hello! I am having a problem sometimes with a deadlock when destroying some threads. I've tried to debug the problem but the deadlock never seems to exist when debugging in the IDE, perhaps because of the low speed of the events in the ide. The problem: The main thread creates several threads when the application starts. The threads are always alive and synchronizing with the main thread. No problems at all. The threads are destroyed when the applcation ends (mainform.onclose) like this: thread1.terminate; thread1.waitfor; thread1.free; and so on. but some times one of the threads (which logs some string to a memo, using synchronize) will lock the whole application when closing. I suspect that the thread is synchronizing when I call waitform and the harmaggeddon happens, but that's is just a guess because the deadlock never happens when debbuging (or I've never been able to reproduce it anyway). Any advice?

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  • Windows Azure DownloadtoStream EOF error

    - by david
    Hello, I've been using Windows Azure to create a document management system, and things have gone well so far. I've been able to upload and download files to the BLOB storage through an asp.net front end. What I'm attempting to do now is allow users to upload a .zip file, and then take the files out of that .zip and save them as individual files. Problem is, I'm getting "ZipException was unhandled" "EOF in header" and I don't know why. I'm using the ICSharpCode.SharpZipLib library which I've used for many other tasks and its worked great. Here's the basic code: CloudBlob ZipFile = container.GetBlobReference(blobURI); MemoryStream MemStream = new MemoryStream(); ZipFile.DownloadToStream(MemStream); .... while ((theEntry = zipInput.GetNextEntry()) != null) and it's on the line that starts with while that I get the error. I added a sleep duration of 10 seconds just to make sure enough time had gone by. MemStream has a length if I debug it, but the zipInput does sometimes, but not always. It always fails. Thanks for any help. Dave

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  • Reference for proper handling of PID file on Unix

    - by bignose
    Where can I find a well-respected reference that details the proper handling of PID files on Unix? On Unix operating systems, it is common practice to “lock” a program (often a daemon) by use of a special lock file: the PID file. This is a file in a predictable location, often ‘/var/run/foo.pid’. The program is supposed to check when it starts up whether the PID file exists and, if the file does exist, exit with an error. So it's a kind of advisory, collaborative locking mechanism. The file contains a single line of text, being the numeric process ID (hence the name “PID file”) of the process that currently holds the lock; this allows an easy way to automate sending a signal to the process that holds the lock. What I can't find is a good reference on expected or “best practice” behaviour for handling PID files. There are various nuances: how to actually lock the file (don't bother? use the kernel? what about platform incompatibilities?), handling stale locks (silently delete them? when to check?), when exactly to acquire and release the lock, and so forth. Where can I find a respected, most-authoritative reference (ideally on the level of W. Richard Stevens) for this small topic?

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  • Using Apache Camel how do I unmarshal my deserialized object that comes in through a CXF Endpoint?

    - by ScArcher2
    I have a very simple camel route. It starts with a CXF Endpoint exposed as a web service. I then want to convert it to xml and call a method on a bean. Currently i'm getting a CXF specific object after the web service call. How do I take my serialized object out of the CXF MessageList and use it going forward? My Route: <camel:route> <camel:from uri="cxf:bean:helloEndpoint" /> <camel:marshal ref="xstream-utf8" /> <camel:to uri="bean:hello?method=hello"/> </camel:route> The XML Serialized Message: <?xml version='1.0' encoding='UTF-8'?> <org.apache.cxf.message.MessageContentsList serialization="custom"> <unserializable-parents /> <list> <default> <size>1</size> </default> <int>6</int> <com.whatever.Person> <firstName>Joe</firstName> <middleName></middleName> <lastName>Buddah</lastName> <dateOfBirth>2010-04-13 12:09:00.137 CDT</dateOfBirth> </com.whatever.Person> </list> </org.apache.cxf.message.MessageContentsList> I would expect the XML to be more like this: <com.whatever.Person> <firstName>Joe</firstName> <middleName></middleName> <lastName>Buddah</lastName> <dateOfBirth>2010-04-13 12:09:00.137 CDT</dateOfBirth> </com.whatever.Person>

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  • C# .Net Serial DataReceived Event response too slow for high-rate data.

    - by Matthew
    Hi, I have set up a SerialDataReceivedEventHandler, with a forms based program in VS2008 express. My serial port is set up as follows: 115200, 8N1 Dtr and Rts enabled ReceivedBytesThreshold = 1 I have a device I am interfacing with over a BlueTooth, USB to Serial. Hyper terminal receives the data just fine at any data rate. The data is sent regularly in 22 byte long packets. This device has an adjustable rate at which data is sent. At low data rates, 10-20Hz, the code below works great, no problems. However, when I increase the data rate past 25Hz, there starts to recieve mulitple packets on one call. What I mean by this is that there should be a event trigger for every incoming packet. With higher output rates, I have tested the buffer size (BytesToRead command) immediatly when the event is called and there are multiple packets in the buffer then. I think that the event fires slowly and by the time it reaches the code, more packes have hit the buffer. One test I do is see how many time the event is trigger per second. At 10Hz, I get 10 event triggers, awesome. At 100Hz, I get something like 40 event triggers, not good. My goal for data rate is 100HZ is acceptable, 200Hz preferred, and 300Hz optimum. This should work because even at 300Hz, that is only 52800bps, less than half of the set 115200 baud rate. Anything I am over looking? public Form1() { InitializeComponent(); serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived); } private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e) { this.Invoke(new EventHandler(Display_Results)); } private void Display_Results(object s, EventArgs e) { serialPort1.Read(IMU, 0, serial_Port1.BytesToRead); }

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  • C# Windows Service

    - by Goober
    Scenario I've created a windows service, but whenever I start it, it stops immediately. The service was concieved from a console application that used to subscribe to an event and watch processes on a server. If anything happened to process (i.e. It was killed), then the event would trigger the process to be restarted. The reason I'm telling you this is because the original code used to look like this: Original Console App Code: static void Main(string[] args) { StartProcess sp = new StartProcess(); //Note the readline that means the application sits here waiting for an event! Console.ReadLine(); } Now that this code has been turned into a Windows Service, it is essentially EXACTLY THE SAME. However, the service does not sit there waiting, even with the readline, it just ends..... New Windows Service Code: protected override void OnStart(string[] args) { ProcessMonitor pm = new ProcessMonitor(); Console.ReadLine(); } Thoughts Since the functionality is entirely encapsulated within this single class (It quite literally starts, sets up some events and waits) - How can I get the service to actually sit there and just wait? It seems to be ignoring the readline. However this works perfectly as a console application, it is just far more convenient to have it as a service.

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  • Insert video clip in a lyx presentation and play it in GNU/Linux.

    - by Orjanp
    How can I insert a video clip into a presentation created in Lyx? Have seen http://www.latex-community.org/forum/viewtopic.php?f=19&t=48. It works, but there the video starts in the background in an external player. I would prefer it to be played in the presentation itself. If an external player is used it it should at least start in the foreground. But the presentation takes the foreground. Using evince in GNU/linux as pdf viewer. Beamer is used as a presentation template. Is it possible to play a video file in an embedded player in the presentation itself? Created an example presentation. The code is found below. \documentclass[english]{beamer} \usepackage{mathptmx} \usepackage[T1]{fontenc} \usepackage[latin9]{inputenc} \usepackage{amsmath} \usepackage{amssymb} \makeatletter %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific LaTeX commands. % this default might be overridden by plain title style \newcommand\makebeamertitle{\frame{\maketitle}}% \AtBeginDocument{ \let\origtableofcontents=\tableofcontents \def\tableofcontents{\@ifnextchar[{\origtableofcontents}{\gobbletableofcontents}} \def\gobbletableofcontents#1{\origtableofcontents} } \makeatletter \long\def\lyxframe#1{\@lyxframe#1\@lyxframestop}% \def\@lyxframe{\@ifnextchar<{\@@lyxframe}{\@@lyxframe<*>}}% \def\@@lyxframe<#1>{\@ifnextchar[{\@@@lyxframe<#1>}{\@@@lyxframe<#1>[]}} \def\@@@lyxframe<#1>[{\@ifnextchar<{\@@@@@lyxframe<#1>[}{\@@@@lyxframe<#1>[<*>][}} \def\@@@@@lyxframe<#1>[#2]{\@ifnextchar[{\@@@@lyxframe<#1>[#2]}{\@@@@lyxframe<#1>[#2][]}} \long\def\@@@@lyxframe<#1>[#2][#3]#4\@lyxframestop#5\lyxframeend{% \frame<#1>[#2][#3]{\frametitle{#4}#5}} \makeatother \def\lyxframeend{} % In case there is a superfluous frame end %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands. \usetheme{Warsaw} \usepackage{hyperref} \makeatother \usepackage{babel} \begin{document} \title{Testing video} \makebeamertitle \lyxframeend{}\section{Testing video} \lyxframeend{}\subsection{Testing video} \lyxframeend{}\lyxframe{Testing video} \href{run:video.wmv}{Movie} \appendix \lyxframeend{} \end{document}

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  • Custom code access permissions

    - by jaklucky
    Hi all, We have a server written in C# (Framework 3.5 SP1). Customers write client applications using our server API. Recently, we created several levels of license schemes like Basic, Intermediate and All. If you have Basic license then you can call few methods on our API. Similiarly if you have Intermediate you get some extra methods to call and if you have All then you can call all the methods. When server starts it gets the license type. Now in each method I have to check the type of license and decide whether to proceed further with the fucntion or return. For example, a method "InterMediateMethod()" can only be used by Intermediate License and All license. So I have to something like this. public void InterMediateMethod() { if(licenseType == "Basic") { throw new Exception("Access denined"); } } It looks like to me that it is very lame approach. Is there any better way to do this? Is there any declarative way to do this by defining some custom attributes? I looked at creating a custom "CodeAccessSecurityAttribute" but did not get a good success. Thank you, Suresh

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  • Time to start returning IQueryable<T> instead of IList<T> to my Web UI / Web API Layer?

    - by JohnnyO
    I've got a multi-layer application that starts with the repository pattern for all data access and it returns IQueryable to the Services layer. The Services layer, which includes all of the business logic, returns IList to the Controllers (note: I'm using ASP.NET MVC for the UI layer). The benefit of returning IQueryable in the data access layer is that it allows my repositories to be extremely simple and the database queries to be deferred. However, I'm triggering the database queries in my services layer so that my unit tests is more reliable and I don't give flexibility to the Controllers to reshape my queries. However, I've recently encountered several situations where deferring the execution of queries down to the Controllers would have been significantly more performant because the Controllers had to do some projections on the data that was UI specific. Additionally, with the emergence of things like oData, I was starting to wonder if end points (e.g. web UI or web apis) should be working directly with IQueryable. What are your thoughts? Is it time to start returning IQueryable from the services layer to the UI layer? Or stick with IList? This thread here: http://stackoverflow.com/questions/718624/to-return-iqueryablet-or-not-return-iqueryablet seems to vouch for returning IList to the UI layers, but I was wondering if things are changing because of new emerging technologies and techniques.

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  • Recursively adding threads to a Java thread pool

    - by Leith
    I am working on a tutorial for my Java concurrency course. The objective is to use thread pools to compute prime numbers in parallel. The design is based on the Sieve of Eratosthenes. It has an array of n bools, where n is the largest integer you are checking, and each element in the array represents one integer. True is prime, false is non prime, and the array is initially all true. A thread pool is used with a fixed number of threads (we are supposed to experiment with the number of threads in the pool and observe the performance). A thread is given a integer multiple to process. The thread then finds the first true element in the array that is not a multiple of thread's integer. The thread then creates a new thread on the thread pool which is given the found number. After a new thread is formed, the existing thread then continues to set all multiples of it's integer in the array to false. The main program thread starts the first thread with the integer '2', and then waits for all spawned threads to finish. It then spits out the prime numbers and the time taken to compute. The issue I have is that the more threads there are in the thread pool, the slower it takes with 1 thread being the fastest. It should be getting faster not slower! All the stuff on the internet about Java thread pools create n worker threads the main thread then wait for all threads to finish. The method I use is recursive as a worker can spawn more worker threads. I would like to know what is going wrong, and if Java thread pools can be used recursively.

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  • Async trigger for an update panel refreshes entire page when triggering too much in too short of tim

    - by Matt
    I have a search button tied to an update panel as a trigger like so: <asp:Panel ID="CRM_Search" runat="server"> <p>Search:&nbsp;<asp:TextBox ID="CRM_Search_Box" CssClass="CRM_Search_Box" runat="server"></asp:TextBox> <asp:Button ID="CRM_Search_Button" CssClass="CRM_Search_Button" runat="server" Text="Search" OnClick="SearchLeads" /></p> </asp:Panel> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <Triggers> <asp:AsyncPostBackTrigger ControlID="CRM_Search_Button" /> </Triggers> <ContentTemplate> /* Content Here */ </ContentTemplate> </asp:UpdatePanel> In my javascript I use jQuery to grab the search box and tie it's keyup to make the search button click: $($(".CRM_Search_Box")[0]).keyup( function () { $($(".CRM_Search_Button")[0]).click(); } ); This works perfectly, except when I start typing too fast. As soon as I type too fast (my guess is if it's any faster than the data actually returns) the entire page refreshes (doing a postback?) instead of just the update panel. I've also found that instead of typing, if I just click the button really fast it starts doing the same thing. Is there any way to prevent it from doing this? Possibly prevent 2nd requests until the first has been completed? If I'm not on the right track then anyone have any other ideas? Thanks, Matt

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  • Graph colouring algorithm: typical scheduling problem

    - by newba
    Hi, I'm training code problems like UvA and I have this one in which I have to, given a set of n exams and k students enrolled in the exams, find whether it is possible to schedule all exams in two time slots. Input Several test cases. Each one starts with a line containing 1 < n < 200 of different examinations to be scheduled. The 2nd line has the number of cases k in which there exist at least 1 student enrolled in 2 examinations. Then, k lines will follow, each containing 2 numbers that specify the pair of examinations for each case above. (An input with n = 0 will means end of the input and is not to be processed). Output: You have to decide whether the examination plan is possible or not for 2 time slots. Example: Input: 3 3 0 1 1 2 2 0 9 8 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Ouput: NOT POSSIBLE. POSSIBLE. I think the general approach is graph colouring, but I'm really a newb and I may confess that I had some trouble understanding the problem. Anyway, I'm trying to do it and then submit it. Could someone please help me doing some code for this problem? I will have to handle and understand this algo now in order to use it later, over and over. I prefer C or C++, but if you want, Java is fine to me ;) Thanks in advance

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  • Serial Communication between Java RXTX and Arduino

    - by SharpBarb
    I'm trying to communicate between my PC (Windows 7 using Netbeans and RXTX) with an Arduino Pro, using the serial port. The Arduino is actually connected to the PC using an FTDI cable. The code is based on the Java SimpleRead.Java found here. Currently the Arduino simply prints out a string when it starts up. My Java program should print the number of bytes that have been read and then print out the contents. The Java program works, sort of... If the string is long (10 bytes or so) the output will get broken up. So if on the Arduino I print Serial.println("123456789123456789"); //20 bytes including '\r' and '\n' The output of my Java program may look something like: Number of Bytes: 15 1234567891234 Number of Bytes: 5 56789 or Number of Bytes: 12 1234567891 Number of Bytes: 8 23456789 I'm thinking it's a timing problem, because when I manually go through the code using the debugger, the result string is always what it should be: one 20 byte string. I've been messing with various things but I haven't been able to fix the problem. Here is the part of the code that is giving me problems: static int baudrate = 9600, dataBits = SerialPort.DATABITS_8, stopBits = SerialPort.STOPBITS_1, parity = SerialPort.PARITY_NONE; byte[] readBuffer = new byte[128]; ... ... public void serialEvent(SerialPortEvent event) { if (event.getEventType() == SerialPortEvent.DATA_AVAILABLE) { try { if (input.available() > 0) { //Read the InputStream and return the number of bytes read numBytes = input.read(readBuffer); String result = new String(readBuffer,0,numBytes); System.out.println("Number of Bytes: " + numBytes); System.out.println(result); } } catch (IOException e) { System.out.println("Data Available Exception"); } }

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  • Performance problem with System.Net.Mail

    - by Saif Khan
    I have this unusual problem with mailing from my app. At first it wasn't working (getting unable to relay error crap) anyways I added the proper authentication and it works. My problem now is, if I try to send around 300 emails (each with a 500k attachment) the app starts hanging around 95% thru the process. Here is some of my code which is called for each mail to be sent Using mail As New MailMessage() With mail .From = New MailAddress(My.Resources.EmailFrom) For Each contact As Contact In Contacts .To.Add(contact.Email) Next .Subject = "Accounting" .Body = My.Resources.EmailBody 'Back the stream up to the beginning orelse the attachment 'will be sent as a zero (0) byte file. attachment.Seek(0, SeekOrigin.Begin) .Attachments.Add(New Attachment(attachment, String.Concat(Item.Year, Item.AttachmentType.Extension))) End With Dim smtp As New SmtpClient("192.168.1.2") With smtp .DeliveryMethod = SmtpDeliveryMethod.Network .UseDefaultCredentials = False .Credentials = New NetworkCredential("username", "password") .Send(mail) End With End Using With item .SentStatus = True .DateSent = DateTime.Now.Date .Save() End With Return I was thinking, can I just prepare all the mails and add them to a collection then open one SMTP conenction and just iterate the collection, calling the send like this Using mail As New MailMessage() ... MailCollection.Add(mail) End Using ... Dim smtp As New SmtpClient("192.168.1.2") With smtp .DeliveryMethod = SmtpDeliveryMethod.Network .UseDefaultCredentials = False .Credentials = New NetworkCredential("username", "password") For Each mail in MainCollection .Send(mail) Next End With

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  • Load external script dynamic, and access it, so I can trigger its domready function

    - by Didier
    I am trying to load the Zopim chat client. Normally it is included with a document write action. This causes it to be loaded before the domReady function is triggered, as it needs this to start itself. I want to load it later, and this works by using prototype (framework determined by Magento) to create a new script element and attaching it to the head. The script is loaded perfectly, but the domReady doesn't fire, so the script is never started. The script is a nameless class, by this I mean that all its functions are encapsulated in {} UPDATE: Sorry, I got it wrong, it is as self invoking function, the same syntax as the first answer suggest. (function C(){ })(); This function call when run sets up listening events for the domReady event under various browsers and then waits. When the domready event fires, it calls a function (that is within the self-invoked function) that starts everything. What I need, is a way to access this function somehow. END UPDATE Within that is a function named C. How can I call this function directly? Or put another way, how can I start an external javascript file that depends on domready going off, when that event doesn't happen? Can I load an external javascript file into a variable, so I can name the class? Can I access the nameless class {} somehow maybe via the script tag? Is there a way to alter the external file/javascript so I can have it look for another event, one that I can trigger? About the only solution I can think of at the moment is to create a iframe and load the script in that.

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  • Delphi: Alternative to using Assign/ReadLn for text file reading

    - by Ian Boyd
    i want to process a text file line by line. In the olden days i loaded the file into a StringList: slFile := TStringList.Create(); slFile.LoadFromFile(filename); for i := 0 to slFile.Count-1 do begin oneLine := slFile.Strings[i]; //process the line end; Problem with that is once the file gets to be a few hundred megabytes, i have to allocate a huge chunk of memory; when really i only need enough memory to hold one line at a time. (Plus, you can't really indicate progress when you the system is locked up loading the file in step 1). The i tried using the native, and recommended, file I/O routines provided by Delphi: var f: TextFile; begin Assign(filename, f); while ReadLn(f, oneLine) do begin //process the line end; Problem withAssign is that there is no option to read the file without locking (i.e. fmShareDenyNone). The former stringlist example doesn't support no-lock either, unless you change it to LoadFromStream: slFile := TStringList.Create; stream := TFileStream.Create(filename, fmOpenRead or fmShareDenyNone); slFile.LoadFromStream(stream); stream.Free; for i := 0 to slFile.Count-1 do begin oneLine := slFile.Strings[i]; //process the line end; So now even though i've gained no locks being held, i'm back to loading the entire file into memory. Is there some alternative to Assign/ReadLn, where i can read a file line-by-line, without taking a sharing lock? i'd rather not get directly into Win32 CreateFile/ReadFile, and having to deal with allocating buffers and detecting CR, LF, CRLF's. i thought about memory mapped files, but there's the difficulty if the entire file doesn't fit (map) into virtual memory, and having to maps views (pieces) of the file at a time. Starts to get ugly. i just want Assign with fmShareDenyNone!

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  • How does GMail implement Comet?

    - by Morgan Cheng
    With the help of HttpWatch, I tried to figure out how GMail implement Comet. I Login in GMail with two account, one in IE and the other in Firefox. Chatting in GTalk in GMail with some magic words like "WASSUP". Then, I logoff both GMail accounts, filter any http content without "WASSUP" string. The result shows which HTTP request is the streaming channel. (Note: I have to logoff. Otherwise, never-ending HTTP would not show content in HttpWatch.) The result is interesting. The URL for stream channel is like: https://mail/channel/bind?VER=8&at=xn3j33vcvk39lkfq..... There is no surprise that GMail do Comet in IE with IFRAME. The Http content starts with " Originally, I guessed that GMail do Comet in Firefox with multipart XmlHttpRequest. To my surprise, the response header doesn't have "multipart/x-mixed-replace" header. The response headers are as below: HTTP/1.1 200 OK Content-Type: text/plain; charset=utf-8 Cache-Control: no-cache, no-store, max-age=0, must-revalidate Pragma: no-cache Expires: Fri, 01 Jan 1990 00:00:00 GMT Date: Sat, 20 Mar 2010 01:52:39 GMT X-Frame-Options: ALLOWALL Transfer-Encoding: chunked X-Content-Type-Options: nosniff Server: GSE X-XSS-Protection: 0 Unfortunately, the HttpWatch doesn't tell whether a HTTP request is from XmlHttpRequest or not. The content is not HTML but JSON. It looks like a response for XHR, but that would not work for Comet without multipart/x-mixed-replace, right? Is there any way else to figure out how GMail implement Comet? Thanks.

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  • Proof of library bug vs developer side application bug

    - by Paralife
    I have a problem with a specific java client library. I wont say here the problem or the name of the library because my question is a different one. Here is the situation: I have made a program that uses the library. The program is a class named 'WorkerThread' that extends Thread. To start it I have made a Main class that only contains a main() function that starts the thread and nothing else. The worker uses the library to perform comm with a server and get results. The problem appears when I want to run 2 WorkerThreads simultaneously. What I first did was to do this in the Main class: public class Main { public static void main(String args[]) { new WorkerThread().start(); // 1st thread. new WorkerThread().start(); // 2nd thread. } } When I run this, both threads produce irrational results and what is more , some results that should be received by 1st thread are received by the 2nd instead. If instead of the above, I just run 2 separate processes of one thread each, then everything works fine. Also: 1.There is no static class or method used inside WorkerThread that could cause the problem. My application consists of only the worker thread class and contains no static fields or methods 2.The library is supposed to be usable in a multithreaded environment. In my thread I just create a new instance of a library's class and then call methods on it. Nothing more. My question is this: Without knowing any details of my implementation, is the above situation and facts enough to prove that there is a bug in the library and not in my programm? Is it safe to assume that the library inside uses a static method or object that is indirectly shared by my 2 threads and this causes the problem? If no then in what hypothetical situation could the bug originate in the worker class code?

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  • How would you answer Joel's sample programming questions?

    - by Khorkrak
    I recently interviewed a candidate for a new position here. I wish though that I'd read Joel's Guerrilla Guide to Interviewing prior to that interview - naturally I happened upon it the night afterwards :P http://www.joelonsoftware.com/articles/GuerrillaInterviewing3.html So I tried answering the easy questions myself - yeah I used the python interpreter to type stuff in and tested the results a bit - I didn't look up any solutions beforehand though and I also thought about how long it took me to come up with answers for each one and what I'd look for the next time I interview someone. I'd let them type stuff into the interpreter and see how did used python's introspection capabilities too to find out things like what's the re module's method for building a regex etc. Here are my answers - these are in python of course - what are yours in your favourite language? Do you see any issues with the answers I came up with - i.e. how could they be improved upon - what did I miss? Joel's example questions: Write a function that determines if a string starts with an upper-case letter A-Z. import re upper_regex = re.compile("^[A-Z]") def starts_with_upper(text): return upper_regex.match(text) is not None Write a function that determines the area of a circle given the radius. from math import pi def area(radius): return pi * radius**2 Add up all the values in an array. sum([1, 2, 3, 4, 5]) Harder Question: Write an example of a recursive function - so how about the classic factorial one: def factorial(num): if num > 1: return num * factorial(num - 1) else: return 1

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