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• Cilk or Cilk++ or OpenMP

  - by Aman Deep Gautam

  I'm creating a multi-threaded application in Linux. here is the scenario: Suppose I am having x instance of a class BloomFilter and I have some y GB of data(greater than memory available). I need to test membership for this y GB of data in each of the bloom filter instance. It is pretty much clear that parallel programming will help to speed up the task moreover since I am only reading the data so it can be shared across all processes or threads. Now I am confused about which one to use Cilk, Cilk++ or OpenMP(which one is better). Also I am confused about which one to go for Multithreading or Multiprocessing

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• Could InAppSettingsKit do this, or is there another library?

  - by cannyboy

  I'm trying to implement a system whereby the user is initially presented with a single tablecell, in a uitableview (grouped style), within a uinavigationview. --------------- + | add record | --------------- When they click on the cell, they are pushed onto a new screen where they fill in a few textviews (perhaps imbedded in a tableview's cells) --------------- | (name) | --------------- | (phone num) | --------------- Then when they go back, they can see the new record as well as the 'add record' cell. --------------- | record 1 | --------------- + | add record | --------------- (When they go into record 1 again there would be a delete button) Is there any sample code or libraries which would achieve this? What about InAppSettingsKit? It's more the presentation I'm concerned with. I can handle the saving of data myself.

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• Insert dependencies dynamically in View (Javascript and CSS Files)

  - by Ph.E

  Friends, I am willing to follow the rules of the W3C where it is recommended that javascript and CSS files should be in individual files and not within the page. Good, following this rule, and not wanting to overload the master page, I would like to embed the dependencies dynamically. So how could I insert the libraries dynamically? I think the bigger problem is the Ajax requests. Example: <script type="text/javascript" src="http://sstatic.net/so/js/master.js?v=6523"></script> I tried using the JavascriptResult, but he writes the content on the page, and do not run as "Stream." Any help is welcome. Thanks

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• inserting date timestamp value to mysql thru php in godaddy hosting site

  - by Suj

  Hi all, I'm using GoDaddy's Shared Linux hosting. Using php i am inserting or updating the mysql database with create date or modified date using the variables $datestring = "%Y:%m:%d %h:%i:%s"; $time = time(); $createdate= mdate($datestring, $time); In this $createdate will be the variable i use to insert or update the table. But its updating the wrong value. ITs not the server time or localtime. mostly its 30 mins delay with godaddy's server time. Pls help.

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• purchasing source code from third party vendor

  - by Richard Friend

  Hi Our company uses some third party vendors to write some of our external facing web sites, however with one vendor we keep experiencing over inflated charges for simple changes and it has been decided to bring the product in-house. I have been tasked to provide a list of deliverables/checkpoints that would form a part of the agreement. what is the minimum you would expect if you are purchasing the source code of a product that you have paid for the development of, should we expect code for any custom libraries they may be using that were written not for us etc.. This is all written in .net so i am well aware we could just get the code via reflector, however i dont think my boss would go for this ;-)

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• Uniquely identify two instances of one browser that share Session state?

  - by jdk

  I want to make sure that a user isn't editing the same form data in two different browser tabs or windows (of the same web browser instance). It's to stop the user from stupidly overwriting their own data as they continue through a very long form process. On the server ongoing data input through the screens is collected into the Session. Assume for any browser, all tabs and windows run in the same instance of it (i.e. not each in a separate process). Obviously the browser tabs and windows share the same cookies in this scenario so cookie modification seems out of the question for viable solutions. This is also the reason they shared the same session. Considering that the form is already created and this is one of the final touches, how can I use ASP.NET, hopefully easily, to oversee this "feature"?

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• Making JSON Feed Work Server to Server

  - by Oscar Godson

  I have a JSON feed (which I don't directly control, I have to ask the server admins to update it), that is returning NULL, or otherwise not working when I try to access it from another server. The actual feed works fine, but I can't get it to work like a normal API. Why can I use Flickr, WhitePages, Twitter, etc's JSON APIs, but for: http://portlandoregon.gov/shared/cfm/json.cfm It returns NULL in the browser when using JS. If I call it on the same server, it's fine though. If this is a server issue, what do I ask the admins to change, and if this is a local (browser) based issue, what am I doing wrong for this one feed that works for every other JSON API?

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• Modern Web Development + General question

  - by ritu

  I have been given a nasty wake up a while ago when I discovered that my 10 years of experience was really equivalent of about 4 (got trapped in a big company doing the same thing over and over without realizing it) and is now paying a huge price. Question 1: I did servlets/JSP programming back in the day (2001-2003). Since then there have been libraries like GWT, YUI, etc. Is JSP still the preferred way of building web apps using Java? Question 2: Because I enjoyed what I was doing and needed to pay the bills, I didn't realize that the ground below me has shifted. How do avoid this in the future? My years of C system programming doesn't seem to matter a lot now to the young guys who talk about design patterns.

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• snprintf and Visual Studio 2010

  - by Andrew

  I'm unfortunate enough to be stuck using VS 2010 for a project, and noticed the following code still doesn't build using the non-standards compliant compiler: #include <stdio.h> #include <stdlib.h> int main (void) { char buffer[512]; snprintf(buffer, sizeof(buffer), "SomeString"); return 0; } (fails compilation with the error: C3861: 'snprintf': identifier not found) I remember this being the case way back with VS 2005 and am shocked to see it still hasn't been fixed. Does any one know if Microsoft has any plans to move their standard C libraries into the year 2010?

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• What is the best way to render sprites using OpenGL?

  - by Sam152

  I have been digging around for the past couple of days for a good way to render small sprites using OpenGL and glut. I have tried different libraries including EasyBMP and a few others but all of them seem to have some sort of problem with them that I cannot solve. I want to be able to take image data (I don't care what format it is or what I have to do to it to get it to work) and under the context of games programming use it on the screen. What is the best way to achieve this? I seem to be running around in circles.

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• Display relative time in hour, day, month and year

  - by JohnJohnGa

  I wrote a function toBeautyString(epoch) : String which given a epoch, return a string which will display the relative time from now in hour and minute For instance: // epoch: 1346140800 -> Tue, 28 Aug 2012 05:00:00 GMT // and now: 1346313600 -> Thu, 30 Aug 2012 08:00:00 GMT toBeautyString(1346140800) -> "2 days and 3 hours ago" I want now to extend this function to month and year, so it will be able to print: 2 years, 1 month, 3 days and 1 hour ago Only with epoch without any external libraries. The purpose of this function is to give to the user a better way to visualize the time in the past. I found this: Calculating relative time but the granularity is not enough.

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• How to combine "|" character in run () command in powerbuilder in order to read an txt file as metad

  - by sgian76

  Could you please tell me how to use "pdftk mypdf.pdf dump data | findstr NumberOfPages in powerbuilder run command and save this metadata in a file by using the following code like this: string ls_runinput, ls_outputfile ls_outputfile = "c:\test.exe" ls_runinput = "c:\pdftk\pdftk.exe mypdf.pdf dump_data | findstr NumberOfPages >"+ls_outputfile Run(ls_runinput,Minimized!) li_fileopen = FileOpen(ls_outputfile ,TextMode!, Read!, Shared!) The problem is that Run command is executed, the file is created, but fileopen return -1 ? Is it maybe that run cannot recognize the "|" character? What should you propose me to write the right code? Iam using powerbuilder 10.5.2 , Thanks very much in advance

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• What's the performance penalty of weak_ptr?

  - by Kornel Kisielewicz

  I'm currently designing a object structure for a game, and the most natural organization in my case became a tree. Being a great fan of smart pointers I use shared_ptr's exclusively. However, in this case, the children in the tree will need access to it's parent (example -- beings on map need to be able to access map data -- ergo the data of their parents. The direction of owning is of course that a map owns it's beings, so holds shared pointers to them. To access the map data from within a being we however need a pointer to the parent -- the smart pointer way is to use a reference, ergo a weak_ptr. However, I once read that locking a weak_ptr is a expensive operation -- maybe that's not true anymore -- but considering that the weak_ptr will be locked very often, I'm concerned that this design is doomed with poor performance. Hence the question: What is the performance penalty of locking a weak_ptr? How significant is it?

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• Is there a way to automate MS Office applications without license?

  - by james-h-l

  I am currently writing an application that will perform automation in Excel. I have MS Office (2007) installed on my work computer and the application is working fine referencing the the Microsoft Excel 12.0 Object Lirary. The target machine has the Office installed but not registered. It is one of those preinstalled editions. Attempting to run the application on the target machine I get an error saying Office is not installed? I'm assuming then you have to have a registed Office to use the object libraries? Is there anyway around this as I do not have a Office license key lying around and its quite expensive?

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• Table-per-type inheritance insert problem

  - by gzak

  I followed this article on making a table-per-type inheritance model for my entities, but I get the following error when I try to add an instance of a subclass to the database. Here is how I create the subtype: var cust = db.Users.CreateObject<Customer>(); // Customer inherits User db.Users.AddObject(cust); db.SaveChanges(); I get the following error when I make that last call: "A value shared across entities or associations is generated in more than one location. Check that mapping does not split an EntityKey to multiple store-generated columns." With the following inner exception: "An item with the same key has already been added." Any ideas on what I could be missing?

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• Do I need to enable DRS to use Dynacache in Websphere Application Server Cluster

  - by rabs

  We are running a websphere commerce application with several websphere application servers configured in a cluster. We are using dynacache, so each server in the cluster will have its own cached objects in its own JVM. We are using CACHEIVL with database triggers for all cache invalidations. I was reading http://www.ibm.com/developerworks/websphere/library/techarticles/0603_crick/0603_crick.html and found an interesting sentence: "Furthermore, cache replication is necessary to ensure that invalidation messages are shared between the servers in a cluster." After thinking about this it would make sense that for the invalidation to work it would need to be triggered on all the servers in the cluster, but I couldn't find confirmation of this in the mountains of IBM doco. Does anyone know if you can use trigger based cache invalidation (through CACHEIVL) when you have several application servers clustered each with their own cache without DRS turned on? or do I need to use DRS for this to work?

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• Suggestion for creating custom sound recognition software to toggle audio

  - by Parrot owner

  I need to develop a program that toggles a particular audio track on or off when it recognizes a parrot scream or screech. The software would need to recognize a particular range of sounds and allow some variations in the range (as a parrot likely won't replicate its sreeches EXACTLY each time). Example: Bird screeches, no audio. Bird stops screeching for five seconds, audio track praising the bird plays. Regular chattering needs to be ignored completely, as it is not to be discouraged. I've heard of java libraries that have speech recognition with dictionaries built in, but the software would need to be taught the particular sounds that my particular parrot makes - not words or any random bird sound. In addition as I mentioned above, it would need to allow for slight variation in the sound, as the screech will likely never be 100% identical to the recorded version. What would be the best way to go about this/what language should I look into?

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• ASP.NET Thread Safety in aspx.cs code behind file

  - by Tim Michalski

  I am thinking of adding a DataContext as a member variable to my aspx.cs code-behind class for executing LinqToSql queries. Is this thread safe? I am not sure if a new instance of this code-behind class is created for each HTTP request, or if the instance is shared amongst all request threads? My fear is that I will get 10 simultaneous concurrent http requests that will be using the same database session. public partial class MyPage : System.Web.UI.Page { private DataContext myDB = new DataContext(); protected void MyAction_Click(object sender, EventArgs e) { myDB.DoWork(); } }

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• Java source code generation frameworks

  - by Superfilin

  I have a set of Java 5 source files with old-style Doclet tags, comments and annotations. And based on that I would like to write a generator for another set of Java classes. What is the best way to do that? And are there any good standalone libraries for code analysis/generation in Java? Any shared exprience in this field is appreciated. So, far I have found these: JaxME's Java Source Reflection - seems good, but it does not seem to support annotations. Also it had no release since 2006. Annogen - uses JDK's Doclet generator, which has some bugs under 1.5 JDK. Also it had no releases for a long time. Javaparser - seems good as well and pretty recent, but only supports Visitor pattern for a single class i.e. no query mechanism like in the 2 above packages.

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• Branching logic in an MVC view

  - by Alex Kilpatrick

  I find myself writing a lot of code in my views that looks like the code below. In this case, I want to add some explanatory HTML for a novice, and different HTML for an expert user. <% if (ViewData["novice"] != null ) { % some extra HTML for a novice <% } else { % some HTML for an expert <% } % This is presentation logic, so it makes sense that it is in a view vs the controller. However, it gets ugly really fast, especially when ReSharper wants to move all the braces around to make it even uglier (is there a way to turn that off for views?). My question is whether this is proper, or should I branch in the controller to two separate views? If I do two views, I will have a lot of duplicated HTML to maintain. Or should I do two separate views with a shared partial view of the stuff that is in common?

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• Task vs. process, is there really any difference?

  - by DASKAjA

  Hi there, I'm studying for my final exams in my CS major on the subject distributed systems and operating systems. I'm in the need for a good definition for the terms task, process and threads. So far I'm confident that a process is the representation of running (or suspended, but initiated) program with its own memory, program counter, registers, stack, etc (process control block). Processes can run threads which share memory, so that communication via shared memory is possible in contrast to processes which have to communicate via IPC. But what's the difference between tasks and process. I often read that they're interchangable and that the term task isn't used anymore. Is that really true?

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• Stupid Facebook Connect question about customizing the share-button

  - by Geuis

  I really hate asking about anything retarded as Facebook Connect on SO, but their own development forums are horrendous. We're implementing a Facebook share button using this: <fb:share-button class="url" href="http://oursite.com/"></fb:shared-button> This is documented(poorly) here: http://wiki.developers.facebook.com/index.php/Fb:share-button I need to be able to change the text from "Share" to something else. I've spent 2 hours looking for an answer to this and have come up short. Thanks a lot for any help, and sorry for asking about something this retarded.

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• correct way to turn EAR module into OSGI bundle

  - by Osw

  Greetings to all! There is a necessity to turn part of EAR (namely - war) into OSGI bundle and retain it's interoperability. Glassfish 3.0.1 already has osgi-web-container module and I succeeded to deploy standalone OSGI war. But in case of of ex-enterprise war it looks a bit difficult to me. What do I do with EJB calls from inside future OSGI war? Is it enough to replace @EJB injections with true JNDI lookups? What about APIs and libraries shared across EAR? I could split and rearrange them, but still I will have at least one jar needed by both EAR and OSGI war. Duplicate, make it as OSGI-bundle itself and make it available to ear somehow, place it GF domain's library path? Any other ideas, advices which could make that hybrid working? Many thanks in advance, Osw

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• Error & status handling for functions

  - by Industrial

  Hi everyone, We're working with a new codeigniter based application that are cross referencing different PHP functions forwards and backwards from various libraries, models and such. We're running PHP5 on the server and we try to find a good way for managing errors and status reports that arises from the usage of our functions. While using return in functions, the execution is ended, so nothing more can be sent back. Right? What's the best practice to send a status information or error code upon ending execution of actual function? Should we look into using exceptions or any other approach? http://us.php.net/manual/en/language.exceptions.php

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• problem when migrating from development into live server

  - by justjoe

  I'm facing problem when migrate my web app project from development server to live server. the reason is because i just realize that the live server has different PHP version and available memory lower then mine. i found this after client give me their ftp and cpanel access of their server, which is a shared host. so, how do we handle this situation ? and avoid similar problem in the future ? What is the most suitable configuration of a development server ? btw, i use xampp in windows. it's has apache and mysql.

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