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  • First Come, First Served process scheduling

    - by user253530
    i have 4 processes: p1 - bursts 5, priority: 3 p2 - bursts 8, priority: 2 p3 - bursts 12, priority: 2 p4 - bursts 6, priority: 1 Assuming that all processes arrive at the scheduler at the same time what is the average response time and average turnaround time? For FCFS is it ok to have them in the order p1, p2, p3, p4 in the execution queue?

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  • System.Web.UI not available in console app?

    - by Walter
    Hey everybody, Im trying to write a quick console app that outputs data to an HTML file, however im having trouble accessing the System.Web.UI namespace. Adding System.Web to my references places a warning icon on top of the reference name in the solution explorer and System.Web is not available in the .NET reference list (in order for me to actually add it to the project I have to go to the object browser and add it from there). Anybody have any ideas about what I could be missing? Thanks alot people!

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  • Is there a good NumPy clone for Jython?

    - by jbrogdon
    I'm a relatively new convert to Python. I've written some code to grab/graph data from various sources to automate some weekly reports and forecasts. I've been intrigued by the Jython concept, and would like to port some Python code that I've written to Jython. In order to do this quickly, I need a NumPy clone for Jython (or Java). Is there anything like this out there?

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  • problem in mysql query with join and limit the time

    - by moustafa
    i have this SELECT COUNT(1) cnt, a.auther_id FROM `posts` a LEFT JOIN users u ON a.auther_id = u.id GROUP BY a.auther_id ORDER BY cnt DESC LIMIT 20 its work fine bu now i want select from posts which added from 1 day tried to use WHERE from_unixtime(post_time) >= SUBDATE(NOW(),1) but its didnot worked any one have idea

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  • How to specify number of headers in section UITableView.

    - by Mr. McPepperNuts
    if ([tempArray containsObject: [sectionInfo indexTitle]]) { return nil; }else { [tempArray addObject: [sectionInfo indexTitle]]; return [sectionInfo indexTitle]; } return [sectionInfo indexTitle]; The code above groups the cells in alphabetical order but displays a blank header instead of the appropriate title. Could this possibly be because I did not specify the number of headers? This would naturally be a single header for every letter in the alphabet.

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  • Wordpress Events List Date Problem

    - by Roger
    Hi, I'm having a problem displaying events in the correct order in wordpress. I think the problem is because wordpress is treating the date as a string and ordering it by the day because it's in british date format. The goal is to display a list of future events with the most current event at the top of the list. But I must use the british date format of dd/mm/yyyy. Do I need to go back to the drawing board or is there a way of converting the date to achieve the result I need? Thanks in advance :) <ul> <?php // Get today's date in the right format $todaysDate = date('d/m/Y');?> <?php query_posts('showposts=50&category_name=Training&meta_key=date&meta_compare=>=&meta_value=' . $todaysDate . '&orderby=meta_value&order=ASC'); ?> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <li> <h3><a href="<?php the_permalink(); ?>"> <?php the_title(); ?> </a></h3> <?php $getDate = get_post_meta($post->ID, 'date', TRUE); $dateArray = explode('/', $getDate); ?> <?php if($getDate != '') { ?> <div class="coursedate rounded"><?php echo date('d F Y', mktime(0, 0, 0, $dateArray[1], $dateArray[0], $dateArray[2])); ?></div> <?php } ?> <p><?php get_clean_excerpt(140, get_the_content()); ?>...</p> <p><strong><a class="link" href="<?php the_permalink(); ?>">For further details and booking click here</a></strong></p> </li> <?php endwhile; ?> <?php else : ?> <li>Sorry, no upcoming events!</li> <?php endif; ?>

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  • What are the most important things to know about Ruby?

    - by Brian T Hannan
    I am new to the language and I need to know what are the top things that are absolutely necessary to know in order to make a fully functional website or web app using the Ruby programming language? Mainly Ruby on Rails with Rake and other tools that mainly use Rake. Update: I know many other languages like C++, Java, PHP, Perl, etc, etc .... Update 2: This is great ... keep 'em coming!

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  • SQL: Find the max record per group

    - by user319088
    I have one table, which has three fields and data. Name , Top , Total cat , 1 , 10 dog , 2 , 7 cat , 3 , 20 horse , 4 , 4 cat , 5 , 10 dog , 6 , 9 I want to select the record which has highest value of Total for each Name, so my result should be like this: Name , Top , Total cat , 3 , 20 horse , 4 , 4 Dog , 6 , 9 I tried group by name order by total, but it give top most record of group by result. Can anyone guide me, please?

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  • OpenCL or CUDA Which way to go?

    - by holydiver
    I'm investigating ways of using GPU in order to process streaming data. I had two choices but couldn't decide which way to go? My criterias are as below: Ease of use.(good API) Community and Documentation. Performance Future I'll code in C and C++.

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  • Magneto admin separate ajax product Grid load

    - by Ela
    Hi, I have to load separate product Grid to select needed product items and store it under my another custom module's model in magento admin side. So i have a custom module created by using Module creator and added another tab which i wish to show all the products as a list or grid to select(Exactly i want it like in new order page under admin side) and store. Do you anybody know how to load product grid or list under custom module area. I really appreciate your help. Thanks

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  • Max size of localStorage values?

    - by user269386
    Hi, since the localStorage (currently) only supports strings as values and in order to that the objects have to be stringified (stored as JSON-string), before they can be stored, i wondered if there is a defined limitation regarding the length of the values. Does anyone know if there is a definition which applies to all browsers, respectively does anyone know the limitations for Chrome5? Thanks, in advance, for your help

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  • Django: Sum on an date attribute grouped by month/year

    - by Sébastien Piquemal
    Hello, I'd like to put this query from SQL to Django: "select date_format(date, '%Y-%m') as month, sum(quantity) as hours from hourentries group by date_format(date, '%Y-%m') order by date;" The part that causes problem is to group by month when aggregating. I tried this (which seemed logical), but it didn't work : HourEntries.objects.order_by("date").values("date__month").aggregate(Sum("quantity"))

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  • One Controller is Sometimes Bound Twice with Ninject

    - by Dusda
    I have the following NinjectModule, where we bind our repositories and business objects: /// <summary> /// Used by Ninject to bind interface contracts to concrete types. /// </summary> public class ServiceModule : NinjectModule { /// <summary> /// Loads this instance. /// </summary> public override void Load() { //bindings here. //Bind<IMyInterface>().To<MyImplementation>(); Bind<IUserRepository>().To<SqlUserRepository>(); Bind<IHomeRepository>().To<SqlHomeRepository>(); Bind<IPhotoRepository>().To<SqlPhotoRepository>(); //and so on //business objects Bind<IUser>().To<Data.User>(); Bind<IHome>().To<Data.Home>(); Bind<IPhoto>().To<Data.Photo>(); //and so on } } And here are the relevant overrides from our Global.asax, where we inherit from NinjectHttpApplication in order to integrate it with Asp.Net Mvc (The module lies in a separate dll called Thing.Web.Configuration): protected override void OnApplicationStarted() { base.OnApplicationStarted(); //routes and areas AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); //Initializes a singleton that must reference this HttpApplication class, //in order to provide the Ninject Kernel to the rest of Thing.Web. This //is necessary because there are a few instances (currently Membership) //that require manual dependency injection. NinjectKernel.Instance = new NinjectKernel(this); //view model factory. NinjectKernel.Instance.Kernel.Bind<IModelFactory>().To<MasterModelFactory>(); } protected override NinjectControllerFactory CreateControllerFactory() { return base.CreateControllerFactory(); } protected override Ninject.IKernel CreateKernel() { var kernel = new StandardKernel(); kernel.Load("Thing.Web.Configuration.dll"); return kernel; } Now, everything works great, with one exception: For some reason, sometimes Ninject will bind the PhotoController twice. This leads to an ActivationException, because Ninject can't discern which PhotoController I want. This causes all requests for thumbnails and other user images on the site to fail. Here is the PhotoController in it's entirety: public class PhotoController : Controller { public PhotoController() { } public ActionResult Index(string id) { var dir = Server.MapPath("~/" + ConfigurationManager.AppSettings["UserPhotos"]); var path = Path.Combine(dir, id); return base.File(path, "image/jpeg"); } } Every controller works in exactly the same way, but for some reason the PhotoController gets double-bound. Even then, it only happens occasionally (either when re-building the solution, or on staging/production when the app pool kicks in). Once this happens, it continues to happen until I redeploy without changing anything. So...what's up with that?

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  • How to identify where (external) units are used in a Delphi XE2 project

    - by philnext
    I use JCL Project Analyser to see what units are used in my project, in order to 'clean' it. But, for big projects, I don't really see the dependencies beause I see the units names but not where they are used. I used Map file but with no success. Is there any free tool for having used units AND where they are used ? I tried GExpert Project Dependancies without succes : Example : I have JCLInifiles in Project Analyser but I don't see it in GExpert Project Dependancies.

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  • Did Visual Studio 2010 break "Project Dependencies" between C++ projects?

    - by Roger Lipscombe
    In Visual Studio 2008, if I had a solution containing multiple C++ projects, I could make them depend on each-other and correctly link by using the "Project Dependencies" option. This fixed up the build order and also made (e.g.) the main application project link against the static library outputs. In Visual Studio 2010, this doesn't seem to work. Did Visual Studio 2010 change the way this works?

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  • Java's equivalent to bisect in python

    - by systemsfault
    Hello all, Is there a java equivalent to python's bisect library? With python's bisect you can do array bisection with directions. For instance bisect.bisect_left does: Locate the proper insertion point for item in list to maintain sorted order. The parameters lo and hi may be used to specify a subset of the list which should be considered; by default the entire list is used.

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  • Sort array by keys of another array.

    - by marbrun
    Hello There are 2 arrays, both with the same length and with the same keys: $a1 = [1=>2000,65=>1354,103=>1787]; $a2 = [1=>'hello',65=>'hi',103=>'goodevening']; asort($a1); The keys of a1 and a2 are id's from a database. a1 gets sorted by value. Once sorted, how can we use the same sorting order in a2? Thanks!

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  • Connecting C++ backend to Javascript

    - by baseballtank13
    I was hoping to make a website that displays a google map with points based of information returned by a C++ function. I know you can use Java Server Pages to call java methods on the server with javascript. Would there be a way to connect C++ code on the server with javascript in order to produce the same result as java server pages?

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  • Race condition for thread startup

    - by Ozzah
    A similar question was asked here, but the answers generally all seem to relate to the lambda notation. I get a similar result without the lambda so I thought I'd ask for some clarification: Say I have something like this: for (int i = 0; i < 5; i++) (new Thread(new ThreadStart(delegate() { Console.WriteLine("Thread " + i); }))).Start(); One would expect the following output: Thread 0 Thread 1 Thread 2 Thread 3 Thread 4 Now I realise that the threads aren't started in any particular order, so let's just assume that the above lines can come out in any order. But that is not what happens. What instead happens: Thread 3 Thread 4 Thread 4 Thread 4 Thread 4 or something similar, which leads me to believe that rather than passing the value if i, it is passing the reference. (Which is weird, since an int is a value type). Doing something like this: for (int i = 0; i < 5; i++) (new Thread(new ThreadStart(delegate() { int j = i; Console.WriteLine("Thread " + j); }))).Start(); does not help either, even though we have made a copy of i. I am assuming the reason is that it hasn't made a copy of i in time. Doing something like this: for (int i = 0; i < 5; i++) { (new Thread(new ThreadStart(delegate() { Console.WriteLine("Thread " + i); }))).Start(); Thread.Sleep(50); } seems to fix the problem, however it is extremely undesirable as we're wasting 50ms on each iteration, not to mention the fact that if the computer is heavily loaded then maybe 50ms may not be enough. Here is a sample with my current, specific problem: Thread t = new Thread(new ThreadStart(delgate() { threadLogic(param1, param2, param3, param4); })); t.Start(); param1 = param2 = param3 = param4 = null; with: void threadLogic(object param1, object param2, object param3, object param4) { // Do some stuff here... } I want threadLogic() to run in its own thread, however the above code gives a null reference exception. I assume this is because the values are set to null before the thread has had a chance to start. Again, putting a Thread.Sleep(100) works, but it is an awful solution from every aspect. What do you guys recommend for this particular type of race condition?

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  • android close application

    - by Arutha
    I've two different activities. The first launches the second one. In the second activity I call System.exit(0) in order to force the application to close but the first activity is automatically displayed instead of come back to the home screen. How can I avoid this feature ?

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  • How to use Rx to asynchronously query Twitter search ?

    - by Jalfp
    Hi, I'm thinking about using Rx (Reactive Framework) in order to asynchronously query Twitter search API on a given keyword. The sample app I'd like to build should be able to display new tweets in the console. Do you think it is possible to do that ? Would it be simpler than using standard programming techniques ? How would you do that ? Thank ! Jeremy

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