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• O(N log N) Complexity - Similar to linear?

  - by gav

  Hey All, So I think I'm going to get buried for asking such a trivial but I'm a little confused about something. I have implemented quicksort in Java and C and I was doing some basic comparissons. The graph came out as two straight lines, with the C being 4ms faster than the Java counterpart over 100,000 random integers. The code for my tests can be found here; android-benchmarks I wasn't sure what an (n log n) line would look like but I didn't think it would be straight. I just wanted to check that this is the expected result and that I shouldn't try to find an error in my code. I stuck the formula into excel and for base 10 it seems to be a straight line with a kink at the start. Is this because the difference between log(n) and log(n+1) increases linearly? Thanks, Gav

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• Unity has jerky motion when using Vector2.Lerp

  - by Sting Hà

  I made a 2D game with some sprite move to random position. I used Vector2.Lerp and Time.deltaTime to smooth transfer of sprite. When I build this game in iOS ( I used iPhone 4s and iPhone 5 for test ) all sprite made jerky motion and cause my game lagging. But in Android game run very smoothy. I used only 9 sprite and move all in same time. Can someone have any solution to fix this? Thanks. P/s: Sorry about my bad English.

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• Does any method exist quickly to detect valid range versions of used library

  - by daneel-yaitskov

  I'm a beginner Haskell programmer. I have written some useful code for the last six month. And I want to release a library from it. The code will use system installation cabal as any Haskell library. A library is released with cabal has a meta data file where there is a logical predicate from the libraries and their versions. A developer usually uses one set libraries. It tediously care a set of the sets libraries. How to know either my library is compiled successfully or not for some subset libraries?

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• Uninstalling user install of Apache on Mac Mini

  - by Zeophlite

  I got a MacMini at work for development, and was asked to follow this article to install SVN on it: http://developer.apple.com/tools/subversionxcode.html The article assumes that only Apache 1.3 was installed and asks the reader to install Apache 2. I've since learned that the MacMini has Apache 2 already installed. So basically I've installed two versions of Apache 2. The preinstalled one has access to PHP, so I wanted to remove my version, but I'm unsure of how. My version has httpd.conf stored at: /usr/local/apache2/conf/httpd.conf And the preinstalled version has it stored at: /etc/apache2/httpd.conf, which I believe is an alias for /private/etc/apache2/httpd.conf Thanks for your help

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• photo and video sharing on facebook in asp.net

  - by IphoneDeveloper

  i have to share the photo on facebook for which i have written the following code try { labelSteps_1_2.Text = "<a name=\"fb_share\" type=\"button\"></a>" + "<script " + "src=\"http://static.ak.fbcdn.net/connect.php/js/FB.Share\" " + "type=\"text/javascript\"></script>"; HtmlMeta tag = new HtmlMeta(); tag.Name = "title"; tag.Content = "This is the Title"; Page.Header.Controls.Add(tag); HtmlLink link = new HtmlLink(); link.Href = "http://admin.bizofair.com/UploadOffers/O_O11090004_14032012053503_183_183.jpeg"; link.Attributes["rel"] = "image_src"; link.Style.Add("color", "red"); Page.Header.Controls.Add(link); } catch (Exception ex) { // Handle the exception } on page load but it is not showing the image and when i have paste url of my image in facebook debugger on facebook developer it is giving error Errors That Must Be Fixed Can't Download: Could not retrieve data from URL.

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• Second CSS class not working in IE8.

  - by ProfK

  I have the following div being rendered to the client, but on IE, the checked-yes class is ignored. If I view the target element in the 'Developer Tools', that class is completely missing from the Style panel. The shift-item-present class is attached server side, and the checked-yes class client side, depending on the present attribute of the parent row, also shown below. <td><div class="shift-item-present checked-yes" jQuery1272958392665="94"/></td> Parent row: <tr class="shift-item" id="ctl00_mainContentPlaceHolder_ctl00_shiftList_ctl01_shiftRow" present="True" shift-id="641" jQuery1272958392665="64"> The page works perfectly in FF

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• How should I migrate DDL changes from one environment to the next?

  - by Rl

  I make DDL changes using SQL Developer's GUI. Problem is, I need to apply those same changes to the test environment. I'm wondering how others handle this issue. Currently I'm having to manually write ALTER statements to bring the test environment into alignment with the development environment, but this is prone to error (doing the same thing twice). In cases where there's no important data in the test environment I usually just blow everything away, export the DDL scripts from dev and run them from scratch in test. I know there are triggers that can store each DDL change, but this is a heavily shared environment and I would like to avoid that if possible. Maybe I should just write the DDL stuff manually rather than using the GUI?

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• Connect to Oracle 11g using VS2010.net Drivers/Cleints

  - by StealthRT

  Hey all i am trying to redistribute my app that uses Oracle 11g: Imports Oracle.DataAccess.Client The problem i am having is that it will not run on a machine that doesnt seem to have the correct drivers that its looking for. When i install ODAC 11.2 Release 3 (11.2.0.2.1) with Oracle Developer Tools for Visual Studio on the test VM it works just fine but thats a 230+mb file to download and install! Not to mention that if the user already has Oracle 10/11g on their machine that it may mess up their current connections/etc by installing that setup file. Is there another setup package that i can install that only has the Oracle Data Provider for .NET 2.0 11.2.0.2.0 or whatever its needing from that ODAC 11.2 Release 3 file. So any help about what i need to go about fixing this problem would be great! :) Thanks, David

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• Using checkbox to enable eventlistener

  - by Lefty

  I have looked for a solution to this for days and days. The examples I found don't make sence to me, probably because I am both old and new (old to life and new to android/jave). I would like to add a checkbox to my preference activity that would either enable or disable receivers. This is for a service which will run in the background, at boot completed, and will depend on two things 1)is the preference true and 2) is wifi enabled. So it would work something like this; user turns on phone boot completed checks if receivers are enabled (set by checkboxpreference) if checkboxpreference is true - looks for wifi if wifi is true - registers receivers Also required would be if wifi or checkboxpreference goes "false", unregister receivers. Thanks

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• Why isn't my favicon appearing in IE7/8?

  - by X3Maverick

  Page of interest: https://www.gsb-yourbank.com/test/ ICO file: https://www.gsb-yourbank.com/test/favicon.ico My favicon is a 16x16 resolution, 16-color ICO file. It will not appear in IE 7/8 no matter what I do! I've tried everything I can think of, including: generating the ICO with a variety of different utilities, changing the syntax of the favicon link elements in the document head, using absolute, relative, and root-relative URLs in the favicon link elements, using a PNG instead of an ICO file, ensuring that I am uploading the file via FTP in binary mode, As a longtime web developer/programmer, I can't believe that this is tripping me up. Any help would be greatly appreciated.

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• Google App Engine says "Must authenticate first." while trying to deploy any app

  - by Oleksandr Bolotov

  Google App Engine says "Must authenticate first." while trying to deploy any app: me@myhost /opt/google_appengine $ python appcfg.py update ~/sda2/workspace/lyapapam/ Application: lyapapam; version: 1. Server: appengine.google.com. Scanning files on local disk. Scanned 500 files. Scanned 1000 files. Initiating update. Email: <my_email_was_here>@gmail.com Password for <my_email_was_here>@gmail.com: Error 401: --- begin server output --- Must authenticate first. --- end server output --- We are getting this message with any appliation and under any developer account avialable to us That's what we have installed: App Engine SDK - 1.3.2 PIL - 1.1.7 Python - 2.5.5 pip - 0.6.3 ssl - 1.15 wsgiref - 0.1.2 How can I fix it? Is it well known problem?

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• Alter top and bottom borders of Dojo/Dijit Dialog and ContentPane

  - by Joe Zitzelberger

  I have a Dojo/Dijit Dialog that contains a FORM. There is a top border between the title bar and the content, and a bottom border below the content. Both are about 19 or 20 pixels high and colored #eeeeee. I can't find these borders in the CSS anywhere -- actually, neither can the IE Developer Toolbar -- they just don't seem to exist as elements. I suspect that Dijit is adding these programatically. Is there any way to just remove these borders? I just want my content to consume all of the dialog area below the title bar. TIA

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• How can I avoid causing memory leaks in Firefox?

  - by mrdanimal

  It seems that there is a lot of information on memory leaks in IE and how web developers can avoid them, but I can't find much on avoiding leaks in FF. I've found lots of random tips on how end users can tweak their preferences, or tips for extension developers, but little on what I can do as a web developer to make sure my pages don't leak. Am I missing something? It seems lazy to just blame it on the user and say "you've got too many extensions". Or are the major patterns the same as in IE -- circular references and all that? Also, if anyone knows of any tools to troubleshoot leaks in FF, that would be great. I found this: https://addons.mozilla.org/en-US/firefox/addon/2490/ But it's apparently just for chrome and extension development.

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• Dropdowns don't work on webOS with PhoneGap?

  - by Steve Nay

  I'm trying to use a dropdown in a PhoneGap app I'm writing. It uses a simple <select>: <select> <option value="1">First</option> <option value="2">Second</option> </select> This works fine on Android and the iPhone (including behaving like a native drop-down would on those systems). However, it doesn't appear to work on webOS (neither the Palm Pre itself nor the emulator). The <select> displays properly on the screen, but when I tap on it, nothing happens--I'm not able to make a selection from the dropdown. Why might this be?

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• VB.Net HTTPWebRequest Speed is slow comparing Python URLOpen

  - by regexhacks

  Hi I am coding a web-crawler which will crawl the websites and selectively parse different sections of a web site. I am a .Net developer so the choice was obvious that I did it in .Net but the speed was very slow which included downloading and parsing of HTMLPages Then I tried to just download the contents first using .Net and then same domains using python but the python was very impressive in downloading data. I have achieved downloading using python but the later part is not that easy to code in python, which obviously i don't want to do. The same batch of domain which took 100 seconds in Python was taking 20 minutes in .Net based crawler I tried http://www.eqlit.com/ to download and in took 8 seconds in Python and same was taking 100 Seconds in .Net crawler Does anyone anyone have any idea why this is slow in .Net but fast in python?

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• Does anyone else think instance variables are problematic in database-backed applications?

  - by Ben Aston

  It occurs to me that state control in languages like C# is not well supported. By this, I mean, it is left upto the programmer to manage the state of in-memory objects. A common use-case is that instance variables in the domain-model are copies of information residing in persistent storage (i.e. the database). Clearly this violates the single point of authority principle, and "synchronisation" has to be managed by the developer. I envisage a system where instead of instance variables, we have simple public access/mutator methods marked with attributes that link them to the database, and where reads and writes are mediated by a framework that decides whether to hit the database. Does such a system exist? Am I completely missing the point, or is there some truth to this idea?

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• frequently merge changes between branch and trunk?

  - by John

  My team and I are using svn branches for the first time. Before, we use to work only from the trunk. Over the past 2 weeks, we've been refactoring and developing new code against our branch. But during that time, another developer has been making bug fixes to code in the trunk and deploying it to the production server. We would like to frequently "update" our branch with changes from the trunk to make sure we get the latest fixes. But the problem is that we're making drastic changes to our branch, and many files have been renamed. I have a feeling every "update" we do on our branch that takes changes from trunk will cause a conflict, unless we some how get subversion to recognise that fileA.html in trunk is really fileB.html in branch. Am I using subversion branches correctly? Am I using the word "update" correctly? Are frequent "updates" in branch advisable?

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• SVN - ignoring files already in repository

  - by Alex

  I have a configuration file in my project which needs to be in the repository (so new developers get it when they checkout the project). Each developer might change some values in the file locally - these changes should not be committed and I don't want them showing in the synchronization menu (I'm using eclipse and subversive if it matters). Note that I can't just set the svn:ignore property since it only works on files that aren't under version control - but I do want to keep a base version of the file in the repository. How can I avoid the file showing in synchronization without deleting it from repository? EDIT: A better description - what I actually need is to be able to set a "read-only" property on the config file, so it can't be changed in the repository as long as the property is on. Do you know anything like this? Thanks

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• Force rules for build and deployment

  - by Sazug

  Our web project is source-controlled with SVN. It contains MSBuild file to build local, test and production builds. We also use CruiseControl.NET to deploy production and test versions to servers manually (not after every commit). The question is how to check that if production deployment is being done using CC.NET web project is built using production build (not test or other)? How to force specific steps to be executed when building and deploying to production (like compress JS and CSS, compile with debug="false", etc...)? Now it is possible for every developer make changes in MSBuild file (so he/she can forget to compress JS on production build, etc.).

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• VS 2008 - Procedure to ship C#/WPF solution to ensure compatibility

  - by Bill

  I am attempting to collaborate on a C#/WPF project with another developer remotely via e-mail; and although the code compiles perfectly when it leaves, my collaborator has not been able to compile the code on his side. We are both using VS 2008 Version 9. This is the first time trying to work with someone else on an application and I was hoping that someone would advise me if there are any suggestions to obtain and ensure compatibility between the two of us? Additionally, is there a recommended procedure to prepare the solution for shipment (ie. just zip up the solution folder? export the application? etc.)? Thanks very much.

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• Finding out the version of Dojo

  - by Sandeep

  I'm kinda new to Dojo toolkit. There are certain issues which I would like to get enlightened (I googled but I didn't get any appropriate & satisfying answers) I have a dojo.js(Perhaps the uncompressed dojo.js downloaded) in my already running application (Developed by another software developer). How to find out which version of dojo.js he has downloaded and is being used right now? (Its not commented. I checked) a) While I'm trying to run my application in IE-8 (Opening a pop-up on click of a button), I get error which is pointing me to this line of code if(dojo.isIE&&window.location.protocol==="file:") Note: Its working fine in IE6 but the issue is with IE8 & to be even more specific the JS error is displayed only for the first time when I'm clicking the button. b) Is it true that dojo 1.3 & above is the best & stable release for IE8?

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• Using code from this site

  - by user553798

  Hi, The legal section of this site mentions that all code by the contributors is licensed under the Creative Commons Attribution Share Alike License. Does this mean that I have to attribute the submitter even if the code in question is a few lines amongst hundreds or thousands of lines of code? What if I use code from a book or SDK? For eg; If I use the sample code from Google's Android SDK documentation, does that mean I need to attribute Google every time I write an app, after all it would be impossible to write an app without consulting the SDK docs, atleast initially... I am totally confused :S

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• Background task in mobile phone to access a secure element and a web server

  - by Splryxx

  Is it possible in a GSM mobile phone OS (e.g. Android, Win Mo, Symbian, etc.) to have some kind of background task or application able to exchange data at the same time with a web server and a secure element of the mobile? The purpose if for the web server to be able to push APDUs to the secure element (an retrieve response APDUs) without activating the IHM of the mobile. NB: I know that this is possible when the secure element is the one managing the GSM baseband, for example using BIP as described in Ulysse specifications. My question is only when using another secure element (e.g. Java Card in a microSD).

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• Event is causing an error, but I can't catch the exception

  - by proudgeekdad

  A developer has created a custom control in ASP.NET using VB.NET. The custom control uses a repeater. In certain scenarios, the rpt_ItemDataBound event is encountering a data error. My goal is rather than having the user see the yellow screen of death, give the user a friendlier error explaining exactly what the data error is. I figured I would be able to use a Try/Catch block as shown below throw the exception, however, it appears that the event has nowhere to be thrown to and stops executing at the "End Try" line. Protected Sub rpt_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rpt1.ItemDataBound, rpt2.ItemDataBound Try ProcessBadData... Catch ex As Exception Throw ex End Try End Sub In VB.NET, I can find where the repeater's DataSource is being set, however, I can not find a DataBind event. Any ideas how I can capture the exception in this ASCX control so I can report it to the user?

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• What is tha CAUSE of Error 523 and Error 200 in Blackberry handhelds

  - by voipsecuritydigest.com

  I'm Blackberry developer, customers using my application experiencing Error 523 and Error 200. Remedies to those errors are in first case - remove application, my application. In second case totally reload OS! This is very bad, and customers blame me! But this is I don't do anything illegal to make blackberry crash. I just used a lot of memory, which is obvious because customer want that. Everywhere including Blackberry knowledge base people talking how to fix the problem, which may happened to everybody using application from well known brands, for example Yahoo! finances. But nobody explains what is the mechanism behind this, and if it is possible to avoid the problem. I would like to know what is that CAUSE of Error 523 and Error 200?

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