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• Explanation needed for sum of prime below n numbers

  - by Bala Krishnan

  Today I solved a problem given in Project Euler its problem no 10 and it took 7 hrs for my python program to show the result. But in that forum itself a person named lassevk posted solution for this and it took only 4 sec. And its not possible for me to post this question in that forum because its not discussion forum. So, think about this if you want to mark this question as non-constructive. marked = [0] * 2000000 value = 3 s = 2 while value < 2000000: if marked[value] == 0: s += value i = value while i < 2000000: marked[i] = 1 i += value value += 2 print s If any one understand this code please explain it simple as possible. Link to the Problem 10 question.

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• Auto save changed text in richtextbox to database

  - by user2519407

  I have created one simple note taking application in jquery & php. Current functionality is like when user clicks save button it sends a ajax request with complete data to update it in db(mysql). All works well. But now I want to auto save only changed text while user typing. I don't want to send entire text to server again and again in text change event. It should send only text which has changed. For Ex: This is saved text. When user continues typing. This is saved text. Unsaved text.. It should be able to send only "Unsaved text.." to server to update in db. How can i implement this in jquery & server side script.? Any Idea..?

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• How to retrieve the ordered list of best articles having a minimum number of votes by using HSQL ?

  - by fabien7474

  I have a Vote domain class from my grails application containing properties like article_id and note I want to HQL query the Vote domain class in order to retrieve the 5 best rated articles having at least 10 votes. I tried : SELECT v.article_id, avg(v.note), count(*) FROM vote v where count(*) >= 10 group by v.article_id order by avg(v.note) desc limit 5; But unfortunately the insertion of where count(*) >= 10 throws an error. How can I do that in a simple way? Thank you for your help.

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• Java Application/Thread Server

  - by Manrico Corazzi

  I am looking for something very close to an application server with these features: it should handle a series of threads/daemons, allowing the user to start-stop-reload each one without affecting the others it should keep libraries separated between different threads/daemons it should allow to share some libraries Currently we have some legacy code reinventing the wheel... and not a perflectly round-shaped one at that! I thought to use Tomcat, but I don't need a web server, except maybe for the simple backoffice user interface (/manager/html). Any suggestion? Is there a non-web application server, or is there a better alternative to Tomcat (more lightweight, for example, or easier to configure)? Thanks in advance.

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• workflow assign task to multiple users

  - by Artru

  I have MOSS. I want to make a page where a user, say administrator, could send some instructions to a server, for example using standard library and make task for a group of users forcing them to read files. After the reading users would press "already read it" and administrator would know who did it/who did not. I created simple workflow in office designer and choose assigne task to Group1, which is in the sharepoint server. After WF run everyone who is in Group1 get message about a task, that's great. However this task is general for group and if we go to the site section "current tasks", we can see it, while I want this task for every person in Group1. Futher question, is it possible to create form where administrator will choose users for this task, 'cause now I munualy set group in WF.

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• Javascript Number Random Scrambler

  - by stjowa

  Hi, I need a Javascript random number scrambler for my website. Seems simple, but I can not figure out how to do it. Can anyone help me out? I have the following array of numbers: 1 2 3 4 5 6 7 8 9 I would like to be able to have these numbers scrambled randomly. Like the following: 3 6 4 2 9 5 1 8 7 or 4 1 7 3 5 9 2 6 8 So, specifically, I would like a function that takes in an array of numbers (1 - n) and then returns that same array of numbers - scrambled randomly with different calls to the function. Maybe a noob function, but can't seem to figure it out. Thanks!

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• Direct video card access

  - by icemanind

  Guys, I am trying to write a class in C# that can be used as a direct replacement for the C# Bitmap class. What I want to do instead though is perform all graphic functions done on the bitmap using the power of the video card. From what I understand, functions such as DrawLine or DrawArc or DrawText are primitive functions that use simple cpu math algorithms to perform the job. I, instead, want to use the graphics card cpu and memory to do these and other advanced functions, such as skinning a bitmap (applying a texture) and true transparancy. My problem is, in C#, how do I access direct video functions? Is there a library or something I need?

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• touchesMoved QuartzDemo application

  - by BittenApple

  I am modifying the QuartzDemo application to include swipe detection while UIView is active (a PDF page being displayed in it via Quartz). This will not work, the event never gets to the QuartzView.m because it sits under scrollview? touchesBegan works fine and I can use single tap. How can I go about with catching touchesMoved while PDF page is being displayed? I need a simple example with code that does nothing on touchesMoved, I'll build up on that later. Please keep in mind that I still want to use the UIScrollview as it is and show PDF content based on selection in that scrollview.

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• How to set up a has-many relationship in Cocoa?

  - by SphereCat1

  I'm building a (very) simple FTP app in Cocoa, and I need to store information on the different types of servers that are supported. So, I've created a ServerType class, which stores all of the relevant information about a single type of server. I then have a ServerTypes class which is designed to manage all of the ServerType classes that are created. My question is how to set up the relationship between the two objects. Is there a preferred method to do so? Also, since Objective-C doesn't support non-instance classes, where should I create an instance of ServerTypes that will have to be used throughout the entire program? Or is there a better way to do that? I need it to be KVC compliant so That I can bind one of the ServerType properties to an NSPopupBox. Sorry about the large volume of questions, I'm fairly new to Cocoa and Objective-C. If you need to see code, just ask and I'll be happy to add some. :) SphereCat1

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• Raphael - what is the native delay function to draw circles?

  - by 3gwebtrain

  I am using Raphael, to draw 3 circles. how to i make the circles draw each one by one with some time gap? I know there is a option with settimeout, but apart from is there any native function to make delay to draw the circles? my simple code: <div id="paper"></div> var paper = Raphael('paper',500,500); var c1 = paper.circle(50,50,25); var c2 = paper.circle(100,50,25); var c3 = paper.circle(150,50,25); jsfiddle here

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• Mozilla Firefox border rendering

  - by zA

  Hi, I've come across a strange thing in Firefox, which has become a problem to me. It seems that Firefox renders borders thinner than other browsers. For example I have just a simple empty div element, and nothing else on the webpage, with a border set to width:3px. In all other browsers, such as IE, Opera, Chrome and Safari, the width looks the same and is in fact 3px wide. But in Firefox I noticed that the border width seemed thinner. So I checked the border width with Firebug, under the Computed tab - Box model. And yes as I suspected, the rendered border in Firefox is thinner. The border width that Firefox rendered is actually 2.2px and not the expected 3px. This small difference with Firefox completely messes up my design. Has anyone else noticed this? Does anyone have a solution for this? Thanks in advance!

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• How does the email header field 'thread-index' work?

  - by Tim

  I was wondering if anyone knew how the thread-index field in email headers work? Here's a simple chain of emails thread indexes that I messaged myself with. Email 1 Thread-Index: AcqvbpKt7QRrdlwaRBKmERImIT9IDg== Email 2 Thread-Index: AcqvbpjOf+21hsPgR4qZeVu9O988Eg== Email 3 Thread-Index: Acqvbp3C811djHLbQ9eTGDmyBL925w== Email 4 Thread-Index: AcqvbqMuifoc5OztR7ei1BLNqFSVvw== Email 5 Thread-Index: AcqvbqfdWWuz4UwLS7arQJX7/XeUvg== I can't seem to say with certainty how I can link these emails together. Normally, I would use the in-reply-to field or references field, but I recently found that Blackberrys do NOT include these fields. The only include Thread-Index field.

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• Windows equivalent to this Makefile

  - by Sridhar Ratnakumar

  The advantage of writing a Makefile is that "make" is generally assumed to be present on the various Unices (Linux and Mac primarily). Now I have the following Makefile: PYTHON := python all: e installdeps e: virtualenv --distribute --python=${PYTHON} e installdeps: e/bin/python setup.py develop clean: rm -rf e As you can see this Makefile uses simple targets and variable substitution. Can this be achieved on Windows? By that mean - without having to install external tools (like cygwin make); perhaps make.cmd? Typing "make installdeps" for instance, should work both on Unix and Windows.

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• buffer overflow with boost::program_options

  - by f4

  Hello, I have a problem using boost:program_options this simple program, copy-pasted from boosts' documentation : #include <boost/program_options.hpp> int main( int argc, char** argv ) { namespace po = boost::program_options; po::options_description desc("Allowed options"); desc.add_options() ("help", "produce help message") ("compression", po::value<int>(), "set compression level") ; return 0; } fails with a buffer overflow. I have activated the "buffer security switch", and when I run it I get an "unknown exception (0xc0000409)" when I step over the line desc.add_options()... I use Visual Studio 2005 and boost 1.43.0. By the way it does run if I deactivate the switch but I don't feel comfortable doing so... unless it's possible to deactivate it locally. So do you have a solution to this problem? EDIT I found the problem I was linking against libboost_program_options-vc80-mt.lib which wasn't the good library.

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• Does Exchange have ability to run hidden mailboxes?

  - by MadBoy

  Hello, Title of my question may sound a little bit odd but I was thinking if Exchange 2010 or 2007 or any program that would work in conjunction with Exchange has ability to create this structure: Users having their normal mailboxes connected and using them as everyone would in Outlook 2003/2007/2010. Users having additional mailboxes (from old Exchange 2003) attached but hidden on demand of Administrator. For example administrator could easy disable them just like they never been attached making them invisible to users and everyone else. Would be good if such mailboxes could be easily removed out of system (lets say on external drive) by simple step not manual job for 100 mailboxes. Users without ability to copy/move their mails to outside storage (like a local .pst file)? Do you guys have any suggestions on this? I was thinking maybe using public folders but this seems like overkill and not really suited for this. And please don't ask me why I need this type of security (it's not something I requested).

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• Service-Based Authentication Using Tokens

  - by jerhinesmith

  I'm having a tough time trying to find clear and concise examples of how one would implement a service-based authentication scheme using tokens. As far as I can tell, the basic steps are as follows: Client requests username/password from user Client passes username/password to identity provider Provider checks username/password and sends back a token if the user is valid Client does something with the token? The third and fourth step are where I'm getting stuck. I assume the "token" in this case just has to be either an encrypted string that the client can decrypt or some random string that gets stored somewhere (i.e. a database) that the client can then verify against, but I'm not really sure what the client is then supposed to do with the token or why you even need a token at all -- couldn't a simple user ID also suffice?

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• How to verify if file is according to mask in PHP without reading filename from disk.

  - by php html

  I have a list of file names(I already have the filelist let's say in a text file). I want to process this list in the following way: filenames of type /dirX/subdirX//.ext will be written in a new file all the other filenames will be written in a separate file. Is there any option to verify if a filename corresponds to a mask, without reading the file name from disk?(by filename I mean a simple string). I would like to know if there is such a function that don't require disk access. I know regex could be an workaround but I'd like to have something from php.

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• More than one Custome control are not working properly

  - by Kamlesh

  Hello Developers, I have developed a ASP.Net Server custom control in C# for 3.5. named "myCheckBoxList" inherited from CheckBoxList web control. Working is very simple. It just works as a two option buttons. I have taken a CheckBoxList which will show two fixed checkboxes always. When I check one checkbox then another will uncheck as vise versa. This control works perfectly only when I have placed only one instance of that control on web page. If I place more than one instance of control then it doesnt works. Please, I need solution from expert minds from developers as stackoverflow users.

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• .Net programming on a Apple computer

  - by VoodooChild

  Hello, I really would like to write an app or apps for iPhone / iPad. I've never done this so far because most of my work has been in windows environment. I recently got an i7 with windows 7 and love it, and this is what I am using to do development on currently. I would love to try out writing a simple App on a mac for either an iPhone or iPad. The question I had was are there any developers using a macbook to do windows based programming as well as writing apps? And what is their setups like? (example: using bootcamp) Most importantly, is it recommended based on the experience they had doing so? any problems / performance issue? These are the concerns I have to address before justifying spending time and money on this. Thanks, Voodoo

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• Django: text fixture fails to load

  - by Esteban Feldman

  Hi all, Did a dumpdata of my project, then in my new test I added it to fixtures. from django.test import TestCase class TestGoal(TestCase): fixtures = ['test_data.json'] def test_goal(self): """ Tests that 1 + 1 always equals 2. """ self.failUnlessEqual(1 + 1, 2) When running the test I get: Problem installing fixture 'XXX/fixtures/test_data.json': DoesNotExist: XXX matching query does not exist. But manually doing loaddata works fine does not when the db is empty. I do a dropdb, createdb a simple syncdb the try loaddata and it fails, same error. Any clue? Python version 2.6.5, Django 1.1.1

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• MySQL Password Not Working

  - by 01010011

  Hi, When I enter my password into MySQL Command Line Client, it rejects my password, gives 1 beep and closes the window. Can anyone provide me with a basic troubleshooting list of steps (from simple to progressively more technical) to regain entry into MySQL once and for all. Also, can anyone tell me what can cause my password to suddenly be rejected? I am also running XAMPP and the MySQL service is both installed and running. Thanks in advance. I remember when I first got this problem some months ago, if I recall correctly, I solved it by starting the MySQL service from Windows XP's Administrative Tool (something I did stopped the MySQL service and to this day I don't know what it was). Now the problem has started back again but this time, when I checked Services, the MySQL service was already 'started'. Any assistance will be appreciated. Thanks

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• Reading multiple json values with php

  - by jason

  I am trying to read certain values from a json string in php, I am able to do a simple json string with only one value such as $json = '{"value":"somevalue"}'; Using this: <?php $json = '{"value":"somevalue"}'; $obj = json_decode(json_encode($json)); print $obj->{'value'}; ?> But when i try an get a value from the following json string it throws an error... $json = '{"field": "title","rule": {"required": "true","minlength": "4","maxlength": "150" }}'; I validated the json on JSONlint but not sure how to access the values within this with php. Thanks

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• Calling javascript function with arguments using JSNI

  - by jav_000

  I'm trying to integrate Mixpanel with GWT, but I have problems calling an event with a property and one value. My function to track an simple event (without values): public native void trackEvent(String eventName)/*-{ $wnd.mixpanel.track(eventName); }-*/; It works. But when I want to add some properties and values, it doesn't work properly: public native void trackComplexEvent(String eventName, String property, String value)/*-{ $wnd.mixpanel.track(eventName, {property:value}); }-*/; I have 2 problems with this: 1) Mixpanel says the property name is: "property"(yes, the name of the variable that I'm passing, not the value). 2) Mixpanel says the value is:undefined An example from mixpanel web is: mixpanel.track("Video Play", {"age": 13, "gender": "male"}); So, I guess the problem is I'm doing a wrong call or with wrong type of arguments.

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• Automatic upload of 10KB file to web service?

  - by Joseph Turian

  I am writing an application, similar to Seti@Home, that allows users to run processing on their home machine, and then upload the result to the central server. However, the final result is maybe a 10K binary file. (Processing to achieve this output is several hours.) What is the simplest reliable automatic method to upload this file to the central server? What do I need to do server-side to prevent blocking? Perhaps having the client send mail is simple and reliable? NB the client program is currently written in Python, if that matters.

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• Drag and drop between HTML 5 and Silverlight 4

  - by Tej

  Hi - Is it possible to drag an HTML 5 object, e.g. an , into a Silverlight 4 control and accept it? We've attempted to build a simple prototype using an HTML 5 example and a trivial Silverlight control but the cursor changes to the no-entry sign whenever we hover over the Silverlight control. We do, however, get drag entry events firing in Silverlight. Our control happily accepts files dragged from the desktop as expected. We think we've got the HTML 5 drag events set up correctly, and I can possibly get our test published somewhere in case that will help. We've successfully implemented dragging inside a Silverlight control but we now need to integrate with non-Silverlight page components. Is this actually possible to set up or are we just doing something wrong? Thanks for any advice!

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