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Articles indexed Tuesday May 4 2010

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  • Targeting Android with Scala 2.8 Trunk builds

    - by Kevin Wright
    The definitive reference for using Scala on android seems to be here: http://www.scala-lang.org/node/160 Unfortunately, all the references on using scala with android are based around Scala 2.7 and refer to a custom build android-library.jar, with a couple of cryptic references suggesting that this custom build isn't needed for later versions of android (I'm using 2.1 / API v7) So... What are the steps needed to use Scala 2.8 in an android project? Preferably using eclipse and the Android tools that Google supplies for that IDE.

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  • How to Elegantly convert switch+enum with polymorphism

    - by Kyle
    I'm trying to replace simple enums with type classes.. that is, one class derived from a base for each type. So for example instead of: enum E_BASE { EB_ALPHA, EB_BRAVO }; E_BASE message = someMessage(); switch (message) { case EB_ALPHA: applyAlpha(); case EB_BRAVO: applyBravo(); } I want to do this: Base* message = someMessage(); message->apply(this); // use polymorphism to determine what function to call. I have seen many ways to do this which all seem less elegant even then the basic switch statement. Using dyanimc_pointer_cast, inheriting from a messageHandler class that needs to be updated every time a new message is added, using a container of function pointers, all seem to defeat the purpose of making code easier to maintain by replacing switches with polymorphism. This is as close as I can get: (I use templates to avoid inheriting from an all-knowing handler interface) class Base { public: template<typename T> virtual void apply(T* sandbox) = 0; }; class Alpha : public Base { public: template<typename T> virtual void apply(T* sandbox) { sandbox->applyAlpha(); } }; class Bravo : public Base { public: template<typename T> virtual void apply(T* sandbox) { sandbox->applyBravo(); } }; class Sandbox { public: void run() { Base* alpha = new Alpha; Base* bravo = new Bravo; alpha->apply(this); bravo->apply(this); delete alpha; delete bravo; } void applyAlpha() { // cout << "Applying alpha\n"; } void applyBravo() { // cout << "Applying bravo\n"; } }; Obviously, this doesn't compile but I'm hoping it gets my problem accross.

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  • Best practices retrieving XML/stream from HTTP in Android

    - by Jeffrey
    Hello everyone, what are the best practices parsing XML from an HTTP resource in Android? I've been using HttpURLConnection to retrieve an InputStream, wrapping it with a BufferedInputStream, and then using SAX to parse the buffered stream. For the most part it works, though I do receive error reports of SocketTimeoutException: The operation timed out or general parsing error. I believe it's due to the InputStream. Would using HttpClient instead of HttpURLConnection help? If yes, why? Should the stream be output to a file, having the file parsed instead of the stream? Any input or direction would be greatly appreciated. Thanks for your time.

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  • Best way to order by columns in relationships?

    - by Timmy
    im using sqlalchemy, and i have a few polymorphic tables, and i want to sort by a column in one of the relationship. i have tables a,b,c,d, with relationship a to b, b to c, c to d. a to b is one-to-many b to c and c to d are one-to-one, but polymorphic. given an item in table a, i will have a list of items b, c, d (all one to one). how do i use sqlalchemy to sort them by a column in table d?

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  • C++ - checking if a class has a certain method at compile time

    - by jetwolf
    Here's a question for the C++ gurus out there. Is there a way to check at compile time where a type has a certain method, and do one thing if it does, and another thing if it doesn't? Basically, I have a template function template <typename T> void function(T t); and I it to behave a certain way if T has a method g(), and another way if it doesn't. Perhaps there is something that can be used together with boost's enable_if? Something like this: template <typename T> enable_if<has_method<T, g, void ()>, void>::type function(T t) { // Superior implementation calling t.g() } template <typename T> disable_if<has_method<T, g, void ()>, void>::type function(T t) { // Inferior implementation in the case where T doesn't have a method g() } "has_method" would be something that preferably checks both that T has a method named 'g', and that the method has the correct signature (in this case, void ()). Any ideas?

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  • IE and replaceWith not preserving radio button state

    - by copelco
    Hello, I've run into an issue regarding replaceWith not maintaining the state of a moved radio button input. I've prepared a simple example illustrating this issue. This works in FF and Chrome, but not IE. Is there a way around this? Thanks! jsbin: http://jsbin.com/unola4/2 code: <html> <head> <script class="jsbin" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script> <title>IE replaceWith issue</title> <script type='text/javascript'> $(function(){ $('a').click(function(e) { e.preventDefault(); $('#temp').replaceWith($('#window').children()); }); }); </script> </head> <body> <a href='#'>run replaceWith</a> <p>Select a radio button and then click "run replaceWith". The value persists in FF, but not IE.</p> <div id='window' style='background-color: #DDD; height: 100px;'> <input id="id_received_date-days_0" type="radio" name="received_date-days" value="30" /> <input id="id_received_date-days_1" type="radio" name="received_date-days" value="50" /> <input type='text' name='test-test' /> </div> <br /> <form id='foo' style='background-color: #EEE'> <div id='temp'></div> </form> </body> </html>

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  • WPF: Get Property that a control is Bound to in code behind

    - by Richard
    Hi all, I am trying to find a way to get the Property to which a control is bound (in c#). If I have the following: <dxe:ComboBoxEdit DisplayMember="Name" ItemsSource="{Binding Path=NameOptions, Mode=OneTime}" SelectedItem="{Binding Path=Name, UpdateSourceTrigger=PropertyChanged}" /> I am now trying to get the location to which the SelectedItem is bound to, i.e. the result should be "Name". Then in code I need to do some stuff with that ViewModel Property. Issue is that I can't just hard code this as it is a generic method that needs to work with each control on the form. Thanks, Richard

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  • eclipse 3.5 filter .git folder

    - by jpfuentes2
    I'm using eclipse 3.5.2 and cannot seem to use "filter resources" to filter out .git folders in any of my projects for any of my perspectives: javascript, ruby, and php. I've tried adding the filter to plugin.xml as suggested on this blog but it is for eclipse 3.4 and doesn't seem to work. Any suggestions?

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  • Best practices for using memcached in Rails?

    - by Matt
    Hello everybody, as database transcations in our app are getting more and more time consuming, we have started to use memcached to reduce the amount of queries passed to MySQL. All in all, it works fine and really saves a lot of time. But as caching was "silently appearing" as a workaround to give the app more juice, a lot of our models now contain code like this: def self.all_cached Rails.cache.fetch('object_name') { find( :all, :include => [associations]) } end This is getting more and more a pain as filling and flushing the cache happens in several classes accross the application. Now, I was wondering if there was a better way to abstract memcached logic to make it more powerful and easy to use across all needed models? I was thinking about having some kind of memcached-module which is included in all needed modules. But before playing around, I thought: Let's ask experts first :-) Thanks Matt

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  • In NHibernate (Fluent), How do you map a property on referenced object into parent object?

    - by JChristian
    I want to map the Name column from the Child table into the Parent object. How do you do this (using Fluent NHibernate)? public class Parent { public int Key { get; set; } public string ChildName { get; set; } } Tables +--------------+ +------------------+ | Parent | | Child | +--------------+ +------------------+ | Key INT | +--->| Key INT | | ChildKey INT |-----+ | Name VARCHAR(20) | +--------------+ +------------------+

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  • Saving data in custom class via AppDelegate

    - by redspike
    I can't seem to save data to a custom instance object in my AppDelegate. My custom class is very simple and is as follows: Person.h ... @interface Person : NSObject { int _age; } - (void) setAge: (int) age; - (int) age; @end Person.m #import "Person.h" @implementation Person - (void) setAge:(int) age { _age = age; } - (int) age { return _age; } @end I then create an instance of Person in the AppDelegate class: AppDelegate.h @class Person; @interface AccuTaxAppDelegate : NSObject <UIApplicationDelegate> { ... Person *person; } ... @property (nonatomic, retain) Person *person; @end AppDelegate.m ... #import "Person.h" @implementation AccuTaxAppDelegate ... @synthesize person; - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; } - (void)applicationWillTerminate:(UIApplication *)application { // Save data if appropriate } #pragma mark - #pragma mark Memory management - (void)dealloc { [navigationController release]; [window release]; [person release]; [super dealloc]; } @end Finally, in my ViewController code I grab a handle on AppDelegate and then grab the person instance, but when I try to save the age it doesn't seem to work: MyViewController ... - (void)textFieldDidEndEditing:(UITextField *)textField { NSString *textAge = [textField text]; int age = [textAge intValue]; NSLog(@"Age from text field::%i", age); AppDelegate *appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate; Person *myPerson = (Person *)[appDelegate person]; NSLog(@"Age before setting: %i", [myPerson age]); [myPerson setAge:age]; NSLog(@"Age after setting: %i", [myPerson age]); [textAge release]; } ... The output of the above NSLogs are: [Session started at 2010-05-04 18:29:22 +0100.] 2010-05-04 18:29:28.260 AccuTax[16235:207] Age in text field:25 2010-05-04 18:29:28.262 AccuTax[16235:207] Age before setting: 0 2010-05-04 18:29:28.263 AccuTax[16235:207] Age after setting: 0 Any ideas why 'age' isn't being stored? I'm relatively new to Obj-C so please forgive me if I'm missing something very simple!

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  • Please help! Every Post link links to the most recent post Wordpress

    - by kwek-kwek
    I got the site up on time, with one blog post up. Later I added another one and tested it. Big problem! Any link that used to take you to the old post (ie: side-bar "Recent Posts" links) now takes you to the newest one. I tested it by adding a third post, and got the same result. This is a custom wordpress theme and I have a, page.php <?php get_header(); ?> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <div id="BodyWrap"> <!--MAIN CONT--> <div id="mainCont"> <?php get_sidebar(); ?> <?php if (is_page(array('home'))) { ;?> <div id="rotateBanner"> <div id="slide-holder"> <div id="slide-runner"> <img id="slide-img-1" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial2.jpg" class="slide" alt="" /> <img id="slide-img-5" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial5.jpg" class="slide" alt="" /> <img id="slide-img-2" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial1.jpg" class="slide" alt="" /> <img id="slide-img-6" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial6.jpg" class="slide" alt="" /> <img id="slide-img-3" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial3.jpg" class="slide" alt="" /> <img id="slide-img-7" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial7.jpg" class="slide" alt="" /> <img id="slide-img-4" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial4.jpg" class="slide" alt="" /> <img id="slide-img-8" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial8.jpg" class="slide" alt="" /> <div id="slide-controls"> <p id="slide-client" class="text" style="display:none;"><span></span></p> <p id="slide-desc" class="text" style="display:none;"></p> <p id="slide-nav" style="display:none;"></p> </div> </div> <script type="text/javascript"> if(!window.slider) var slider={};slider.data=[{"id":"slide-img-1","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-5","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-2","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-6","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-3","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-7","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-4","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-8","client":"nature beauty","desc":"nature beauty photography"}]; </script> </div> </div> <?php } ?> <?php if (is_page(array('accueil'))) { ;?> <div id="rotateBanner"> <div id="slide-holder"> <div id="slide-runner"> <img id="slide-img-1" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial1-fr.jpg" class="slide" alt="" /> <img id="slide-img-5" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial5-fr.jpg" class="slide" alt="" /> <img id="slide-img-2" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial2-fr.jpg" class="slide" alt="" /> <img id="slide-img-6" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial6-fr.jpg" class="slide" alt="" /> <img id="slide-img-3" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial3-fr.jpg" class="slide" alt="" /> <img id="slide-img-7" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial7-fr.jpg" class="slide" alt="" /> <img id="slide-img-4" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial4-fr.jpg" class="slide" alt="" /> <img id="slide-img-8" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial8-fr.jpg" class="slide" alt="" /> <div id="slide-controls"> <p id="slide-client" class="text" style="display:none;"><span></span></p> <p id="slide-desc" class="text" style="display:none;"></p> <p id="slide-nav" style="display:none;"></p> </div> </div> <script type="text/javascript"> if(!window.slider) var slider={};slider.data=[{"id":"slide-img-1","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-5","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-2","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-6","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-3","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-7","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-4","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-8","client":"nature beauty","desc":"nature beauty photography"}]; </script> </div> </div> <?php } ?> <?php if (is_page(array('contact-us'))) { ;?> <div id="rotateBanner"> <?php custom_field_image() ?> </div> <?php } ?> <div id="mainCopy"> <div id="content"> <h2> <?php if (is_page('home','accueil')) : ?> <?php else : ?> <?php single_post_title(); ?> <?php endif; ?></h2> <?php the_content('<p class="serif">Read the rest of this page &raquo;</p>'); ?> <?php wp_link_pages(array('before' => '<p><strong>Pages:</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?> </div> </div> <?php if (is_page(array('home','accueil'))) { ;?> <div id="rightCol2"> <div id="Fworks"> <h2>Featured work</h2> <li><img src="<?php bloginfo('template_url'); ?>/images/portage-thumb.jpg" width="234" height="92" border="0" alt="" /></li> <li><a href="<?php bloginfo('url'); ?>our-work/foundation-on-antivirals"><img src="<?php bloginfo('template_url'); ?>/images/fav-thumb.jpg" width="234" height="92" border="0" alt="" /></a></li> <li><img src="<?php bloginfo('template_url'); ?>/images/danslejardin-thumb.jpg" width="234" height="92" border="0" alt="" /></li> </div> <div id="NewEvents"> <?php if ( (strtolower(ICL_LANGUAGE_CODE) == 'en') ) {echo("<h2>News &amp; Events</h2");} ?> <?php if ( (strtolower(ICL_LANGUAGE_CODE) == 'fr')) echo("<h2>Nouvelles</h2") ?> <div id="NewsListings"> <ul> <?php //dbem_get_events_list("limit=5&scope=al&order=DESC"); ?> <?php include('events.php');?> </ul> </div> </div> </div> <?php } ?> </div> </div> <?php endwhile; endif; ?> <?php get_footer(); ?> single.php <?php /** * @package WordPress * @subpackage Default_Theme */ get_header(); ?> <div id="BodyWrap"> <!--MAIN CONT--> <div id="mainCont"> <?php get_sidebar(); ?> <?php if (is_page(array('home','contact-us'))) { ;?> <div id="rotateBanner"> <?php custom_field_image() ?> </div> <?php } ?> <div id="mainCopy"> <div id="content" class="widecolumn" role="main"> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <!-- <div class="navigation"> <div class="alignleft"><?php previous_post_link('&laquo; %link') ?></div> <div class="alignright"><?php next_post_link('%link &raquo;') ?></div> </div> <br class="clr" />--> <div <?php post_class() ?> id="post-<?php the_ID(); ?>"> <h2><?php the_title(); ?></h2> <div class="entry"> <?php the_content('<p class="serif">Read the rest of this entry &raquo;</p>'); ?> <?php wp_link_pages(array('before' => '<p><strong>Pages:</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?> <?php the_tags( '<p>Tags: ', ', ', '</p>'); ?> <!--<p class="postmetadata alt"> <small> This entry was posted <?php /* This is commented, because it requires a little adjusting sometimes. You'll need to download this plugin, and follow the instructions: http://binarybonsai.com/wordpress/time-since/ */ /* $entry_datetime = abs(strtotime($post->post_date) - (60*120)); echo time_since($entry_datetime); echo ' ago'; */ ?> on <?php the_time('l, F jS, Y') ?> at <?php the_time() ?> and is filed under <?php the_category(', ') ?>. You can follow any responses to this entry through the <?php post_comments_feed_link('RSS 2.0'); ?> feed. <?php if ( comments_open() && pings_open() ) { // Both Comments and Pings are open ?> You can <a href="#respond">leave a response</a>, or <a href="<?php trackback_url(); ?>" rel="trackback">trackback</a> from your own site. <?php } elseif ( !comments_open() && pings_open() ) { // Only Pings are Open ?> Responses are currently closed, but you can <a href="<?php trackback_url(); ?> " rel="trackback">trackback</a> from your own site. <?php } elseif ( comments_open() && !pings_open() ) { // Comments are open, Pings are not ?> You can skip to the end and leave a response. Pinging is currently not allowed. <?php } elseif ( !comments_open() && !pings_open() ) { // Neither Comments, nor Pings are open ?> Both comments and pings are currently closed. <?php } edit_post_link('Edit this entry','','.'); ?> </small> </p>--> </div> </div> <?php comments_template(); ?> <?php endwhile; else: ?> <p>Sorry, no posts matched your criteria.</p> <?php endif; ?> </div> </div> </div> </div> <?php get_footer(); ?> index.php <?php get_header(); ?> <!--MAIN WRAP--> <div id="BodyWrap"> <!--MAIN CONT--> <div id="mainCont"> <?php get_sidebar(); ?> <div id="mainCopy"> <div id="content"> <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?> <div id="BGHeadTitle"><h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2></div> <?php the_content(); ?> <p><?php the_time('F j, Y'); ?> at <?php the_time('g:i a'); ?> | <?php the_category(', '); ?> | <?php comments_number('No comment', '1 comment', '% comments'); ?></p> <?php comments_template(); // Get wp-comments.php template ?> <?php endwhile; else: ?> <h2>Woops...</h2> <p>Sorry, no posts we're found.</p> <?php endif; ?> <p align="center"><?php posts_nav_link(); ?></p> </div> </div> </div> </div> <?php get_footer(); ?> my recent post code : <ul> <?php query_posts('cat=3,4,5&posts_per_page=5&order=ASC&orderby=date'); if ( have_posts() ) : while ( have_posts() ) : the_post()?> <li> <span class="date"><?php the_time('M j') ?></span> <a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a> </li> <?php endwhile; ?> <?php rewind_posts(); ?> </ul> I am really stuck the site went live and when I was working on the testserver I only noticed it.view the site here »

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  • Using Fzip lib under Adobe Air App

    - by Rafael Oliveira
    I'm currently working on a project for Adobe Air (1.5.3) and I need to unzip a file, copy some of its contents to another file. Then I saw people talking about the Fzip (http://codeazur.com.br/lab/fzip) lib. The problem is that I don't know how to "import" or use this library with Javascript and Adobe Air, since Javascript doesn't have the import directive. How can I manage to do that ?

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  • Properly clean up excel interop objects revisited: Wrapper objects

    - by chiccodoro
    Hi all, Excel 2007 Hangs When Closing via .NET How to properly clean up Excel interop objects in C# How to properly clean up interop objects in C# All of these struggle with the problem that C# does not release the Excel COM objects properly after using them. There are mainly two directions of working around this issue: Kill the Excel process when Excel is not used anymore. Take care to assign each COM object used explicitly to a variable and to Marshal.ReleaseComObject all of these. Some have stated that 2 is too tedious and there is always some uncertainty whether you forget to stick to this rule at some places in the code. Still 1 seems dirty and dangerous to me, also I could imagine that in an environment with restricted access killing processes is not allowed. So I've been thinking about solving 2 by creating another proxy object model which mimics the Excel object model (for me, it would suffice to implement the objects I actually need). The principle would look as follows: Each Excel Interop class has its proxy which wraps an object of that class. The proxy releases the COM object in its destructor. The proxy mimics the interface of the Interop class (maybe by inheriting it). Any methods that usually return another COM object return a proxy instead. The other methods simply delegate the implementation to the inner COM object. This is a rough sketch of the code: public class Application : Microsoft.Office.Interop.Excel.Application { private Microsoft.Office.Interop.Excel.Application innerApplication = new Microsoft.Office.Interop.Excel.Application innerApplication(); ~Application() { Marshal.ReleaseCOMObject(innerApplication); } public Workbooks Workbooks { get { return new Workbooks(innerApplication.Workbooks); } } } public class Workbooks { private Microsoft.Office.Interop.Excel.Workbooks innerWorkbooks; Workbooks(Microsoft.Office.Interop.Excel.Workbooks innerWorkbooks) { this.innerWorkbooks = innerWorkbooks; } ~Workbooks() { Marshal.ReleaseCOMObject(innerWorkbooks); } } My questions to you are in particular: Who finds this a bad idea and why? Who finds this a gread idea? If so, why hasn't anybody implemented/published such a model yet? Just due to the effort, or am I missing a killing problem with that idea? Is it impossible/bad/dangerous to do the ReleaseCOMObject in the destructor? (I've only seen proposals to put it in a Dispose() rather than in a destructor - why?) If the approach makes sense, any suggestions to improve it?

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  • SQL Server 2008 Unique Problem for bring DB Online...

    - by Nai
    This is my error I am facing TITLE: Microsoft.SqlServer.Smo Set offline failed for Database 'Go3D_Retailer ------------------------------ ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) Unable to open the physical file "E:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\ftrow_Go3D_catalog.ndf". Operating system error 2: "2(failed to retrieve text for this error. Reason: 15105)". Database 'Go3D_Retailer' cannot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details. ALTER DATABASE statement failed. (Microsoft SQL Server, Error: 5120) Background to this error I've been trying to move my destination logshipping database to another physical server for analysis purposes. Because I do not have active directory set up, I had to hack my process by using the same username/password for both the source and destination servers to get the process to work. Following that, I used this guy's solution to move the destination database to another server. However, this error occurs when I try to bring the database back online. I don't have an E drive on my server and I have no idea why it's trying to open a file from E drive. I have over a 100gb left on my hard disk so it's definitely not a space issue. This sounds like a bug... Any ideas? I'm running SQL Server 2008 Enterprise edition on Windows Server 2008 R2 64bit

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  • What file or directory is unique to Plesk and unlikely to change in the future?

    - by Tim Post
    I am writing a program that needs to be able to detect the presence of various web hosting control panels. I don't use Plesk, or have access to a server running Plesk, so I am unable to ascertain what file or directory I could test for to reliably conclude that the system is running Plesk. What file or directory indicates "Yes, this has Plesk installed" that is unlikely to ever change in the future, but would be present on all versions of Plesk out in the wild? Thanks in advance :)

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  • Need an idiot-proof picture resizing program for Windows.

    - by marcusw
    My friend needs to resize some pictures as part of a web publishing job, but he is rather clueless when it comes to computers. I am in charge of teaching him how to do this, but only have Linux (albeit with Wine installed) at my disposal for testing. Could you guys recommend a fast, easy, batch-capable, and hopefully open-source program that will resize pictures to the resolution he wants? It doesn't have to be anything fancy, but it needs to be quick and easy to use. Thanks!

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  • C: reading file and populating struct

    - by deostroll
    Hi, I have a structure with the following definition: typedef struct myStruct{ int a; char* c; int f; } OBJECT; I am able to populate this object and write it to a file. However I am not able to read the char* c value in it...while trying to read it, it gives me a segmentation fault error. Is there anything wrong with my code: //writensave.c #include "mystruct.h" #include <stdio.h> #include <string.h> #define p(x) printf(x) int main() { p("Creating file to write...\n"); FILE* file = fopen("struct.dat", "w"); if(file == NULL) { printf("Error opening file\n"); return -1; } p("creating structure\n"); OBJECT* myObj = (OBJECT*)malloc(sizeof(OBJECT)); myObj->a = 20; myObj->f = 45; myObj->c = (char*)calloc(30, sizeof(char)); strcpy(myObj->c, "This is a test"); p("Writing object to file...\n"); fwrite(myObj, sizeof(OBJECT), 1, file); p("Close file\n"); fclose(file); p("End of program\n"); return 0; } Here is how I am trying to read it: //readnprint.c #include "mystruct.h" #include <stdio.h> #define p(x) printf(x) int main() { FILE* file = fopen("struct.dat", "r"); char* buffer; buffer = (char*) malloc(sizeof(OBJECT)); if(file == NULL) { p("Error opening file"); return -1; } fread((void *)buffer, sizeof(OBJECT), 1, file); OBJECT* obj = (OBJECT*)buffer; printf("obj->a = %d\nobj->f = %d \nobj->c = %s", obj->a, obj->f, obj->c); fclose(file); return 0; }

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  • What are 3 C++ language features you expect AFTER C++0x?

    - by Vicente Botet Escriba
    If I have understood well C++0x is now on a phase to resolve pending issues, so no new features will be added. What I want to know is what new features you want to have in C++ after C++0x is released. Just to give you an idea, I have added major existing proposal that could be included after C++0x: Concepts, Contract Programming, Garbage Collection, Macro scopes, Modules, Multimethods, Reflection Answer with your favorite feature if not already in an answer and up-vote them if already present. Be free to add other features not included on this list. Please don't include here libraries. Only core language features.

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  • JQuery create new select option

    - by nav
    Hi I have the below functions in regular javascript creating select options. Is there a way I can do this with JQuery without having to use the form object? function populate(form) { form.options.length = 0; form.options[0] = new Option("Select a city / town in Sweden",""); form.options[1] = new Option("Melbourne","Melbourne"); } Below is how I call the function above: populate(document.form.county); //county is the id of the dropdownlist to populate. Many Thanks,

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  • Friendness and derived class

    - by ereOn
    Hi, Let's say I have the following class hierarchy: class Base { protected: virtual void foo() = 0; friend class Other; }; class Derived : public Base { protected: void foo() { /* Some implementation */ }; }; class Other { public: void bar() { Derived* a = new Derived(); a->foo(); // Compiler error: foo() is protected within this context }; }; I guess I could change it too a->Base::foo() but since foo() is pure virtual in the Base class, the call will result in calling Derived::foo() anyway. However, the compiler seems to refuse a->foo(). I guess it is logical, but I can't really understand why. Am I missing something ? Can't (shouldn't) it handle this special case ? Thank you.

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