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• How to insert sub root node in xml file

  - by pravakar

  Hi guys hope all are doing good. I want to create one sub root node in my xml file like, <CapitalJobsList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <JobAds> -- element to create <JobAd> <AdvertiserDetails> <AdvertiserId>718508549</AdvertiserId> <AdvertiserName>ABC</AdvertiserName> </AdvertiserDetails> <ConsultantDetails> <ContactName>Naga Divakar</ContactName> <ContactPhone>6239 7755</ContactPhone> <ContactEmail>[email protected]</ContactEmail> <ContactFax>12345678912</ContactFax> </ConsultantDetails> <JobAdDetails> <DateEntered>2009-10-03T21:09:35.500</DateEntered> <AdvertiserJobRef>83754865</AdvertiserJobRef> <Title>IT Operations Manager</Title> <DescriptionShort>Large scale/exciting projects Mentor and manage o...</DescriptionShort> <Description>Large scale/exciting projects Mentor and manage others Management/technical mix This is a fantastic opportunity to join a high profile client who is active across both the commercial and Government domain. As the IT Operations Manager you will be responsible for leading and mentoring a small team of Infrastructure Engineers to ensure the availability and performance of the IT infrastructure. You w</Description> <SalaryMin>0.00</SalaryMin> <SalaryMax>0.00</SalaryMax> <WorkType xsi:nil="true" /> <Location>) as [JobAd/JobAdDetails/Bullets], isnull(Job</Location> <PostCode>2600</PostCode> <ClosingDate>2009-11-01T00:00:00</ClosingDate> <Keywords xsi:nil="true" /> <ApplyEmail xsi:nil="true" /> <ApplyURL>http://jobview.careerone.com.au/GetJob.aspx?JobID=83754865</ApplyURL> </JobAdDetails> <JobAdOptions> <BlindPost xsi:nil="true" /> <AdFormatType xsi:nil="true" /> <AdTemplateName xsi:nil="true" /> <ShowContactDetails xsi:nil="true" /> <ShowSalary xsi:nil="true" /> <HasVideo xsi:nil="true" /> <ResumeRequired>1</ResumeRequired> <ResidentsOnly>0</ResidentsOnly> </JobAdOptions> <CategoryList> <Category xsi:nil="true" /> </CategoryList> <RegionsList> <Region>ACT</Region> </RegionsList> <LevelsList> <Level xsi:nil="true" /> </LevelsList> </JobAd> <JobAd> <AdvertiserDetails> <AdvertiserId>718508549</AdvertiserId> <AdvertiserName>ABC</AdvertiserName> </AdvertiserDetails> <ConsultantDetails> <ContactName>Naga Divakar</ContactName> <ContactPhone>6239 7755</ContactPhone> <ContactEmail>[email protected]</ContactEmail> <ContactFax>12345678912</ContactFax> </ConsultantDetails> <JobAdDetails> <DateEntered>2009-10-03T21:09:35.530</DateEntered> <AdvertiserJobRef>83731488</AdvertiserJobRef> <Title>SAP Developers Required in Canberra - 12 month contract</Title> <DescriptionShort>My client, a large government department in Canbe...</DescriptionShort> <Description>My client, a large government department in Canberra, seeks two SAP Developers for 12 month ongoing contracts. Two SAP Developers Required Expert level ABAP programming skills Large SAP landscape - SAP R/3, SAP Web, SAP BI, SAP ITS My client, a large government department in Canberra, seeks two SAP Developers for 12 month ongoing contracts. My client is a large government department in Canberra, a</Description> <SalaryMin>0.00</SalaryMin> <SalaryMax>0.00</SalaryMax> <WorkType xsi:nil="true" /> <Location>) as [JobAd/JobAdDetails/Bullets], isnull(Job</Location> <PostCode>2600</PostCode> <ClosingDate>2009-11-01T00:00:00</ClosingDate> <Keywords xsi:nil="true" /> <ApplyEmail xsi:nil="true" /> <ApplyURL>http://jobview.careerone.com.au/GetJob.aspx?JobID=83731488</ApplyURL> </JobAdDetails> <JobAdOptions> <BlindPost xsi:nil="true" /> <AdFormatType xsi:nil="true" /> <AdTemplateName xsi:nil="true" /> <ShowContactDetails xsi:nil="true" /> <ShowSalary xsi:nil="true" /> <HasVideo xsi:nil="true" /> <ResumeRequired>1</ResumeRequired> <ResidentsOnly>0</ResidentsOnly> </JobAdOptions> <CategoryList> <Category xsi:nil="true" /> </CategoryList> <RegionsList> <Region>ACT</Region> </RegionsList> <LevelsList> <Level xsi:nil="true" /> </LevelsList> </JobAd> </JobAds> </CapitalJobsList> I have used the sql query for xml path like: select r.advid as [JobAd/AdvertiserDetails/AdvertiserId], CompanyName as [JobAd/AdvertiserDetails/AdvertiserName], firstname +'' ''+ lastname as [JobAd/ConsultantDetails/ContactName], WorkPhone as [JobAd/ConsultantDetails/ContactPhone], AdvEmail as [JobAd/ConsultantDetails/ContactEmail], FaxNo as [JobAd/ConsultantDetails/ContactFax], Job_CreatedDate as [JobAd/JobAdDetails/DateEntered], Job_Id as [JobAd/JobAdDetails/AdvertiserJobRef], Job_Title as [JobAd/JobAdDetails/Title], substring(Job_Description,0,50)+''...'' as [JobAd/JobAdDetails/DescriptionShort], Job_Description as [JobAd/JobAdDetails/Description], CONVERT(DECIMAL(10,2),MinSalary) as [JobAd/JobAdDetails/SalaryMin], CONVERT(DECIMAL(10,2),MaxSalary) as [JobAd/JobAdDetails/SalaryMax], Job_Type as [JobAd/JobAdDetails/WorkType], isnull(Job_Bullets,'') as [JobAd/JobAdDetails/Bullets], isnull(Job_Location,'') as [JobAd/JobAdDetails/Location], Job_PostCode as [JobAd/JobAdDetails/PostCode], Job_ExpireDate as [JobAd/JobAdDetails/ClosingDate], Job_Keywords as [JobAd/JobAdDetails/Keywords], ApplyEmail as [JobAd/JobAdDetails/ApplyEmail], Job_BrandURL+Job_Id as [JobAd/JobAdDetails/ApplyURL], BlindPost as [JobAd/JobAdOptions/BlindPost], AdFormatType as [JobAd/JobAdOptions/AdFormatType], AdTemplateName as [JobAd/JobAdOptions/AdTemplateName], ShowContactDetails as [JobAd/JobAdOptions/ShowContactDetails], ShowSalary as [JobAd/JobAdOptions/ShowSalary], HasVideo as [JobAd/JobAdOptions/HasVideo], ResumeRequired as [JobAd/JobAdOptions/ResumeRequired], ResidentsOnly as [JobAd/JobAdOptions/ResidentsOnly], Job_Category as [JobAd/CategoryList/Category], Job_Location_State as [JobAd/RegionsList/Region], [Level] as [JobAd/LevelsList/Level] from DR_Adv_Registration r, DR_CareerOne_ACTJobs j where r.Advid = j.Advid and job_location_city like(''%'+''+ @City +''+'%'') and job_location_state in('''+ @State +''') and job_status=1 for xml path(''''), Root(''CapitalJobsList''),ELEMENTS XSINIL So, suggest me how to get the sub root node. Thanks in advance

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• Crypted_password is null when using Authlogic to save a user

  - by kareem

  i'm getting a strange error on my production install when i try and create a new user using AL: ActiveRecord::StatementInvalid: Mysql::Error: Column 'crypted_password' cannot be null: INSERT INTO users especially strange b/c it works as expected on my local box. RUnning Rails 2.3.2 and ruby 1.8.7 on both boxes. user.rb: class User < ActiveRecord::Base before_create :set_username acts_as_authentic do |c| c.require_password_confirmation = false c.login_field = "email" c.validates_length_of_password_field_options = {:minimum => 4} c.validate_login_field = false #don't validate email field with additional validations end end Here's output from my production console: >> u = User.new => #<User id: nil, username: nil, email: nil, crypted_password: nil, password_salt: nil, persistence_token: nil, single_access_token: nil, perishable_token: nil, login_count: 0, failed_login_count: 0, last_request_at: nil, current_login_at: nil, last_login_at: nil, current_login_ip: nil, last_login_ip: nil, created_at: nil, updated_at: nil, is_admin: 0, first_name: nil, last_name: nil> >> u.full_name = 'john smith' => "john smith" >> u.password = 'test' => "test" >> u.email = '[email protected]' => "[email protected]" >> u.valid? => true >> u.save ActiveRecord::StatementInvalid: Mysql::Error: Column 'crypted_password' cannot be null: INSERT INTO `users` (`single_access_token`, `last_request_at`, `created_at`, `crypted_password`, `perishable_token`, `updated_at`, `username`, `failed_login_count`, `current_login_ip`, `password_salt`, `current_login_at`, `is_admin`, `persistence_token`, `login_count`, `last_name`, `last_login_ip`, `last_login_at`, `email`, `first_name`) VALUES('B-XSXwhO7hkbtISIOyEq', NULL, '2009-07-31 01:10:44', NULL, 'FK3mYS2Tp5Tzeq5IXE1z', '2009-07-31 01:10:44', 'john', 0, NULL, NULL, NULL, 0, '2c76b645f761eb3509353290e93874cecdb68a63caa165812ab1b126d63660757090ecf69995caef9e78f93d070b524e2542b3fec4ee050726088c2a9fdb0c9f', 0, 'smith', NULL, NULL, '[email protected]', 'john') from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/abstract_adapter.rb:212:in `log' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/mysql_adapter.rb:320:in `execute' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/abstract/database_statements.rb: 259:in `insert_sql' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/mysql_adapter.rb:330:in `insert_sql' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/abstract/database_statements.rb: 44:in `insert_without_query_dirty' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/abstract/query_cache.rb:18:in `insert' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/base.rb:2902:in `create_without_timestamps' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/timestamp.rb:29:in `create_without_callbacks' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/callbacks.rb:266:in `create' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/base.rb:2868:in `create_or_update_without_callbacks' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/callbacks.rb:250:in `create_or_update' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/base.rb:2539:in `save_without_validation' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/validations.rb:1009:in `save_without_dirty' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/dirty.rb:79:in `save_without_transactions' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:229:in `send' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:229:in `with_transaction_returning_status' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/connection_adapters/abstract/database_statements.rb: 136:in `transaction' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:182:in `transaction' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:228:in `with_transaction_returning_status' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:196:in `save' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:208:in `rollback_active_record_state!' from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/ active_record/transactions.rb:196:in `save' No idea why this is happening, and especially why this saves a new user on dev but not on production. Any help is much appreciated, thanks! edit: using Apache & Passenger 2.2.4

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• Popping UIView crashes app

  - by Adun

  I'm basically pushing a UIView from a UITableViewController and all it contains is a UIWebView. However when I remove the UIView to return back to the UITableView the app crashes. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here. Create and push another view controller. if (indexPath.row == websiteCell) { NSString *urlPath = [NSString stringWithFormat:@"http://%@", exhibitor.website]; WebViewController *webViewController = [[WebViewController alloc] initWithURLString:urlPath]; // Pass the selected object to the new view controller. [self.parentViewController presentModalViewController:webViewController animated:YES]; [webViewController release]; } } If I comment out the [webViewController release] the app doesn't crash, but I know that this would be a leak. Below is the code for the Web Browser: #import "WebViewController.h" @implementation WebViewController @synthesize webBrowserView; @synthesize urlValue; @synthesize toolBar; @synthesize spinner; @synthesize loadUrl; -(id)initWithURLString:(NSString *)urlString { if (self = [super init]) { urlValue = urlString; } return self; } #pragma mark WebView Controls - (void)goBack { [webBrowserView goBack]; } - (void)goForward { [webBrowserView goForward]; } - (void)reload { [webBrowserView reload]; } - (void)closeBrowser { [self.parentViewController dismissModalViewControllerAnimated:YES]; } #pragma end // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; CGRect contentRect = self.view.bounds; //NSLog(@"%f", contentRect.size.height); float webViewHeight = contentRect.size.height - 44.0f; // navBar = 44 float toolBarHeight = contentRect.size.height - webViewHeight; // navigation bar UINavigationBar *navBar = [[[UINavigationBar alloc] initWithFrame:CGRectMake(0, 20, contentRect.size.width, 44)] autorelease]; navBar.delegate = self; UIBarButtonItem *doneButton = [[[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:nil action:@selector(closeBrowser)] autorelease]; UINavigationItem *item = [[[UINavigationItem alloc] initWithTitle:@"CEDIA10"] autorelease]; item.leftBarButtonItem = doneButton; [navBar pushNavigationItem:item animated:NO]; [self.view addSubview:navBar]; // web browser webBrowserView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 64, contentRect.size.width, webViewHeight)]; webBrowserView.delegate = self; webBrowserView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; webBrowserView.scalesPageToFit = YES; [self.view addSubview:webBrowserView]; // buttons UIBarButtonItem *backButton = [[[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"arrowleft.png"] style:UIBarButtonItemStylePlain target:self action:@selector(goBack)] autorelease]; UIBarButtonItem *fwdButton = [[[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"arrowright.png"] style:UIBarButtonItemStylePlain target:self action:@selector(goForward)] autorelease]; UIBarButtonItem *refreshButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reload)] autorelease]; UIBarButtonItem *flexSpace = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease]; UIBarButtonItem *fixSpace = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil] autorelease]; [fixSpace setWidth: 40.0f]; spinner = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite] autorelease]; [spinner startAnimating]; UIBarButtonItem *loadingIcon = [[[UIBarButtonItem alloc] initWithCustomView:spinner] autorelease]; NSArray *toolBarButtons = [[NSArray alloc] initWithObjects: fixSpace, backButton, fixSpace, fwdButton, flexSpace, loadingIcon, flexSpace, refreshButton, nil]; // toolbar toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, webViewHeight, contentRect.size.width, toolBarHeight)]; toolBar.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth; toolBar.items = toolBarButtons; [self.view addSubview:toolBar]; // load the request NSURL *requestString = [NSURL URLWithString:urlValue]; [webBrowserView loadRequest:[NSURLRequest requestWithURL: requestString]]; [toolBarButtons release]; } - (void)viewWillDisappear { if ([webBrowserView isLoading]) { [webBrowserView stopLoading]; webBrowserView.delegate = nil; } } #pragma mark UIWebView - (void)webViewDidStartLoad:(UIWebView*)webView { [spinner startAnimating]; } - (void)webViewDidFinishLoad:(UIWebView*)webView { [spinner stopAnimating]; } - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { loadUrl = [[request URL] retain]; if ([[loadUrl scheme] isEqualToString: @"mailto"]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"CEDIA10" message:@"Do you want to open Mail and exit AREC10?" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes",nil]; [alert show]; [alert release]; return NO; } [loadUrl release]; return YES; } - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error { [spinner stopAnimating]; if (error.code == -1009) { // no internet connection UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"CEDIA10" message:@"You need an active Internet connection." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } } #pragma mark UIAlertView - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == 1) { [[UIApplication sharedApplication] openURL:loadUrl]; [loadUrl release]; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. [webBrowserView release]; [urlValue release]; [toolBar release]; [spinner release]; [loadUrl release]; webBrowserView = nil; webBrowserView.delegate = nil; urlValue = nil; toolBar = nil; spinner = nil; loadUrl = nil; } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [webBrowserView release]; [urlValue release]; [toolBar release]; [spinner release]; [loadUrl release]; webBrowserView.delegate = nil; urlValue = nil; toolBar = nil; spinner = nil; loadUrl = nil; [super dealloc]; } @end Below this is the crash log that I am getting: Date/Time: 2010-05-13 11:58:20.023 +1000 OS Version: iPhone OS 3.1.3 (7E18) Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x00090b2c __kill + 8 1 libSystem.B.dylib 0x00090b1a kill + 4 2 libSystem.B.dylib 0x00090b0e raise + 10 3 libSystem.B.dylib 0x000a7e34 abort + 36 4 libstdc++.6.dylib 0x00066390 __gnu_cxx::__verbose_terminate_handler() + 588 5 libobjc.A.dylib 0x00008898 _objc_terminate + 160 6 libstdc++.6.dylib 0x00063a84 __cxxabiv1::__terminate(void (*)()) + 76 7 libstdc++.6.dylib 0x00063afc std::terminate() + 16 8 libstdc++.6.dylib 0x00063c24 __cxa_throw + 100 9 libobjc.A.dylib 0x00006e54 objc_exception_throw + 104 10 CoreFoundation 0x00095bf6 -[NSObject doesNotRecognizeSelector:] + 106 11 CoreFoundation 0x0001ab12 ___forwarding___ + 474 12 CoreFoundation 0x00011838 _CF_forwarding_prep_0 + 40 13 QuartzCore 0x0000f448 CALayerCopyRenderLayer + 24 14 QuartzCore 0x0000f048 CA::Context::commit_layer(_CALayer*, unsigned int, unsigned int, void*) + 100 15 QuartzCore 0x0000ef34 CALayerCommitIfNeeded + 336 16 QuartzCore 0x0000eedc CALayerCommitIfNeeded + 248 17 QuartzCore 0x00011ee8 CA::Context::commit_root(void*, void*) + 52 18 QuartzCore 0x00011e80 x_hash_table_foreach + 64 19 QuartzCore 0x00011e2c CA::Transaction::foreach_root(void (*)(void*, void*), void*) + 40 20 QuartzCore 0x0000bb68 CA::Context::commit_transaction(CA::Transaction*) + 1068 21 QuartzCore 0x0000b46c CA::Transaction::commit() + 276 22 QuartzCore 0x000135d4 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 84 23 CoreFoundation 0x0000f82a __CFRunLoopDoObservers + 466 24 CoreFoundation 0x00057340 CFRunLoopRunSpecific + 1812 25 CoreFoundation 0x00056c18 CFRunLoopRunInMode + 44 26 GraphicsServices 0x000041c0 GSEventRunModal + 188 27 UIKit 0x00003c28 -[UIApplication _run] + 552 28 UIKit 0x00002228 UIApplicationMain + 960 29 CEDIA10 0x00002e16 main (main.m:14) 30 CEDIA10 0x00002db8 start + 32 Any ideas on why the app is crashing?

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• A reader method that returns the value of an instance variable and then resets it to nil

  - by snl

  Is there a shorter (and cleaner) way to write the following reader method: class Foo attr_writer :bar def bar return_value = @bar self.bar = nil return_value end end Here's some output on the console to show what it does: >> foo = Foo.new => #<Foo:0x1010e9cf8> >> foo.bar => nil >> foo.bar = "ok" => "ok" >> foo.bar => "ok" >> foo.bar => nil

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• Help with active record relations

  - by Christian Fazzini

  class CreateActivities < ActiveRecord::Migration def self.up create_table :activities do |t| t.references :user t.references :media t.integer :artist_id t.string :type t.timestamps end end def self.down drop_table :activities end end class Fan < Activity belongs_to :user, :counter_cache => true end class Activity < ActiveRecord::Base belongs_to :user belongs_to :media belongs_to :artist, :class_name => 'User', :foreign_key => 'artist_id' end class User < ActiveRecord::Base has_many :activities has_many :fans end I tried changing my activity model too, without any success: class Activity < ActiveRecord::Base has_many :activities, :class_name => 'User', :foreign_key => 'user_id' has_many :activities, :class_name => 'User', :foreign_key => 'artist_id' end One thing to note. Activity is an STI. Fan inherits from Activity. In console, I do: # Create a fan object. User is a fan of himself fan = Fan.new => #<Fan id: nil, user_id: nil, media_id: nil, artist_id: nil, type: "Fan", comment: nil, created_at: nil, updated_at: nil> # Assign a user object fan.user = User.first => #<User id: 1, genre_id: 1, country_id: 1, .... # Assign an artist object fan.artist_id = User.first.id => 1 # Save the fan object fan.save! => true Activity.last => #<Fan id: 13, user_id: 1, media_id: nil, artist_id: 1, type: "Fan", comment: nil, created_at: "2010-12-30 08:41:25", updated_at: "2010-12-30 08:41:25"> Activity.last.user => #<User id: 1, genre_id: 1, country_id: 1, ..... But... Activity.last.artist => nil Why is Activity.last.artist returning nil?

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• Would a pointer to a pointer to nil match against NULL?

  - by dontWatchMyProfile

  Example: A validation method contains this check to see if an NSError object shall be created or not: - (BOOL)validateCompanyName:(NSString *)newName error:(NSError **)outError { if (outError != NULL) { // do it... Now I pass an NSError object, like this: NSError *error = nil; BOOL ok = [self validateCompanyName:@"Apple" error:&error]; I'm not sure if this matches the check for not NULL. I think it's not NULL, since I believe NULL is not nil. Maybe someone can clear this up?

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• Teamviewer 8 on Kubuntu 13.04 won't start

  - by kirokko

  The problem is I can't run Teamviewer on Kubuntu. That problem exists for me since 12.10 and I as I remember, it was with the 7th version either. I download official package from officical web site, for 64 bit system. Install it, then install all dependencies (apt-get install -f). When I start it, window with License agreement appears and I can't agree with it, because I don't see anything, even mouse cursor is invisible on window area. Here's the trace of teamviewer from console: kirokko ~ $ teamviewer Init... Checking setup... Launching TeamViewer... fixme:service:scmdatabase_autostart_services Auto-start service L"MountMgr" failed to start: 2 fixme:service:scmdatabase_autostart_services Auto-start service L"PlugPlay" failed to start: 2 fixme:actctx:parse_depend_manifests Could not find dependent assembly L"Microsoft.Windows.Common-Controls" (6.0.0.0) fixme:heap:HeapSetInformation (nil) 1 (nil) 0 fixme:ole:CoInitializeSecurity ((nil),-1,(nil),(nil),0,3,(nil),0,(nil)) - stub! fixme:heap:HeapSetInformation (nil) 1 (nil) 0 fixme:process:SetProcessShutdownParameters (00000100, 00000000): partial stub. fixme:resource:GetGuiResources (0xffffffff,0): stub fixme:win:EnumDisplayDevicesW ((null),0,0x32dc60,0x00000000), stub! fixme:win:EnumDisplayDevicesW (L"\\\\.\\DISPLAY1",0,0x32d918,0x00000000), stub! fixme:win:EnumDisplayDevicesW ((null),1,0x32dc60,0x00000000), stub! fixme:winhttp:WinHttpDetectAutoProxyConfigUrl discovery via DHCP not supported fixme:msg:ChangeWindowMessageFilter 233 00000001 fixme:msg:ChangeWindowMessageFilter 4a 00000001 fixme:msg:ChangeWindowMessageFilter 407 00000001 fixme:msg:ChangeWindowMessageFilter 49 00000001 fixme:bitmap:CreateBitmapIndirect planes = 0 fixme:bitmap:CreateBitmapIndirect planes = 0 fixme:wtsapi:WTSRegisterSessionNotification Stub 0x1005a 0x00000000 err:ole:marshal_object couldn't get IPSFactory buffer for interface {00000131-0000-0000-c000-000000000046} err:ole:marshal_object couldn't get IPSFactory buffer for interface {00000122-0000-0000-c000-000000000046} err:ole:StdMarshalImpl_MarshalInterface Failed to create ifstub, hres=0x80040155 err:ole:CoMarshalInterface Failed to marshal the interface {00000122-0000-0000-c000-000000000046}, 80040155 fixme:msg:ChangeWindowMessageFilter c04f 00000001 fixme:richedit:ME_HandleMessage EM_SETFONTSIZE: stub fixme:dbghelp:elf_search_auxv can't find symbol in module wine: Unhandled page fault on read access to 0xffffffff at address 0xf7585c5a (thread 0009), starting debugger... err:seh:start_debugger Couldn't start debugger ("winedbg --auto 8 5552") (2) Read the Wine Developers Guide on how to set up winedbg or another debugger What's the problem? The same problem was when I had Ubuntu 12.10 installed, then the same problem was when I installed Mint 14 KDE (Kubuntu 12.10). Now I moved to Kubuntu 13.04 and the problem still exists.

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• How to configure emacs by using this file?

  - by Andy Leman

  From http://public.halogen-dg.com/browser/alex-emacs-settings/.emacs?rev=1346 I got: (setq load-path (cons "/home/alex/.emacs.d/" load-path)) (setq load-path (cons "/home/alex/.emacs.d/configs/" load-path)) (defconst emacs-config-dir "~/.emacs.d/configs/" "") (defun load-cfg-files (filelist) (dolist (file filelist) (load (expand-file-name (concat emacs-config-dir file))) (message "Loaded config file:%s" file) )) (load-cfg-files '("cfg_initsplit" "cfg_variables_and_faces" "cfg_keybindings" "cfg_site_gentoo" "cfg_conf-mode" "cfg_mail-mode" "cfg_region_hooks" "cfg_apache-mode" "cfg_crontab-mode" "cfg_gnuserv" "cfg_subversion" "cfg_css-mode" "cfg_php-mode" "cfg_tramp" "cfg_killbuffer" "cfg_color-theme" "cfg_uniquify" "cfg_tabbar" "cfg_python" "cfg_ack" "cfg_scpaste" "cfg_ido-mode" "cfg_javascript" "cfg_ange_ftp" "cfg_font-lock" "cfg_default_face" "cfg_ecb" "cfg_browser" "cfg_orgmode" ; "cfg_gnus" ; "cfg_cyrillic" )) ; enable disabled advanced features (put 'downcase-region 'disabled nil) (put 'scroll-left 'disabled nil) (put 'upcase-region 'disabled nil) ; narrow cursor ;(setq-default cursor-type 'hbar) (cua-mode) ; highlight current line (global-hl-line-mode 1) ; AV: non-aggressive scrolling (setq scroll-conservatively 100) (setq scroll-preserve-screen-position 't) (setq scroll-margin 0) (custom-set-variables ;; custom-set-variables was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(ange-ftp-passive-host-alist (quote (("redbus2.chalkface.com" . "on") ("zope.halogen-dg.com" . "on") ("85.119.217.50" . "on")))) '(blink-cursor-mode nil) '(browse-url-browser-function (quote browse-url-firefox)) '(browse-url-new-window-flag t) '(buffers-menu-max-size 30) '(buffers-menu-show-directories t) '(buffers-menu-show-status nil) '(case-fold-search t) '(column-number-mode t) '(cua-enable-cua-keys nil) '(user-mail-address "[email protected]") '(cua-mode t nil (cua-base)) '(current-language-environment "UTF-8") '(file-name-shadow-mode t) '(fill-column 79) '(grep-command "grep --color=never -nHr -e * | grep -v .svn --color=never") '(grep-use-null-device nil) '(inhibit-startup-screen t) '(initial-frame-alist (quote ((width . 80) (height . 40)))) '(initsplit-customizations-alist (quote (("tabbar" "configs/cfg_tabbar.el" t) ("ecb" "configs/cfg_ecb.el" t) ("ange\\-ftp" "configs/cfg_ange_ftp.el" t) ("planner" "configs/cfg_planner.el" t) ("dired" "configs/cfg_dired.el" t) ("font\\-lock" "configs/cfg_font-lock.el" t) ("speedbar" "configs/cfg_ecb.el" t) ("muse" "configs/cfg_muse.el" t) ("tramp" "configs/cfg_tramp.el" t) ("uniquify" "configs/cfg_uniquify.el" t) ("default" "configs/cfg_font-lock.el" t) ("ido" "configs/cfg_ido-mode.el" t) ("org" "configs/cfg_orgmode.el" t) ("gnus" "configs/cfg_gnus.el" t) ("nnmail" "configs/cfg_gnus.el" t)))) '(ispell-program-name "aspell") '(jabber-account-list (quote (("[email protected]")))) '(jabber-nickname "AVK") '(jabber-password nil) '(jabber-server "halogen-dg.com") '(jabber-username "alex") '(remember-data-file "~/Plans/remember.org") '(safe-local-variable-values (quote ((dtml-top-element . "body")))) '(save-place t nil (saveplace)) '(scroll-bar-mode (quote right)) '(semantic-idle-scheduler-idle-time 432000) '(show-paren-mode t) '(svn-status-hide-unmodified t) '(tool-bar-mode nil nil (tool-bar)) '(transient-mark-mode t) '(truncate-lines f) '(woman-use-own-frame nil)) ; ?? ????? ??????? y ??? n? (fset 'yes-or-no-p 'y-or-n-p) (custom-set-faces ;; custom-set-faces was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(compilation-error ((t (:foreground "tomato" :weight bold)))) '(cursor ((t (:background "red1")))) '(custom-variable-tag ((((class color) (background dark)) (:inherit variable-pitch :foreground "DarkOrange" :weight bold)))) '(hl-line ((t (:background "grey24")))) '(isearch ((t (:background "orange" :foreground "black")))) '(message-cited-text ((((class color) (background dark)) (:foreground "SandyBrown")))) '(message-header-name ((((class color) (background dark)) (:foreground "DarkGrey")))) '(message-header-other ((((class color) (background dark)) (:foreground "LightPink2")))) '(message-header-subject ((((class color) (background dark)) (:foreground "yellow2")))) '(message-separator ((((class color) (background dark)) (:foreground "thistle")))) '(region ((t (:background "brown")))) '(tooltip ((((class color)) (:inherit variable-pitch :background "IndianRed1" :foreground "black"))))) The above is a python emacs configure file. Where should I put it to use it? And, are there any other changes I need to make?

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• NSXMLParser & memory leaks

  - by HBR

  Hi, I am parsing an XML file using a custom class that instanciates & uses NSXMLParser. On the first call everything is fine but on the second, third and later calls Instruments show tens of memory leaks on certain lines inside didEndElement, didEndElement and foundCharacters functions. I googled it and found some people having this issue, but I didn't find anything that could really help me. My Parser class looks like this : Parser.h @interface XMLParser : NSObject { NSMutableArray *data; NSMutableString *currentValue; NSArray *xml; NSMutableArray *videos; NSMutableArray *photos; NSXMLParser *parser; NSURLConnection *feedConnection; NSMutableData *downloadedData; Content *content; Video *video; BOOL nowPhoto; BOOL nowVideo; BOOL finished; BOOL webTV; } -(void)parseXML:(NSURL*)xmlURL; -(int)getCount; -(NSArray*)getData; //- (void)handleError:(NSError *)error; //@property(nonatomic, retain) NSMutableString *currentValue; @property(nonatomic, retain) NSURLConnection *feedConnection; @property(nonatomic, retain) NSMutableData *downloadedData; @property(nonatomic, retain) NSArray *xml; @property(nonatomic, retain) NSXMLParser *parser; @property(nonatomic, retain) NSMutableArray *data; @property(nonatomic, retain) NSMutableArray *photos; @property(nonatomic, retain) NSMutableArray *videos; @property(nonatomic, retain) Content *content; @property(nonatomic, retain) Video *video; @property(nonatomic) BOOL finished; @property(nonatomic) BOOL nowPhoto; @property(nonatomic) BOOL nowVideo; @property(nonatomic) BOOL webTV; @end Parser.m #import "Content.h" #import "Video.h" #import "Parser.h" #import <CFNetwork/CFNetwork.h> @implementation XMLParser @synthesize xml, parser, finished, nowPhoto, nowVideo, webTV; @synthesize feedConnection, downloadedData, data, content, photos, videos, video; -(void)parseXML:(NSURL*)xmlURL { /* NSURLRequest *req = [NSURLRequest requestWithURL:xmlURL]; self.feedConnection = [[[NSURLConnection alloc] initWithRequest:req delegate:self] autorelease]; [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; */ [[NSURLCache sharedURLCache] setMemoryCapacity:0]; [[NSURLCache sharedURLCache] setDiskCapacity:0]; NSXMLParser *feedParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; //NSXMLParser *feedParser = [[NSXMLParser alloc] initWithData:theXML]; [self setParser:feedParser]; [feedParser release]; [[self parser] setDelegate:self]; [[self parser] setShouldResolveExternalEntities:YES]; [[self parser] parse]; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict { if ([elementName isEqualToString:@"articles"]) { self.finished = NO; self.nowPhoto = NO; self.nowVideo = NO; self.webTV = NO; if (!data) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setData:tmp]; [tmp release]; return ; } } if ([elementName isEqualToString:@"WebTV"]) { self.finished = NO; self.nowPhoto = NO; self.nowVideo = NO; self.webTV = YES; if (!data) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setData:tmp]; [tmp release]; return ; } } if ([elementName isEqualToString:@"photos"]) { if (!photos) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setPhotos:tmp]; [tmp release]; return; } } if ([elementName isEqualToString:@"videos"]) { if (!videos) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setVideos:tmp]; [tmp release]; return; } } if ([elementName isEqualToString:@"photo"]) { self.nowPhoto = YES; self.nowVideo = NO; } if ([elementName isEqualToString:@"video"]) { self.nowPhoto = NO; self.nowVideo = YES; } if ([elementName isEqualToString:@"WebTVItem"]) { if (!video) { Video *tmp = [[Video alloc] init]; [self setVideo:tmp]; [tmp release]; } NSString *videoId = [attributeDict objectForKey:@"id"]; [[self video] setVideoId:[videoId intValue]]; } if ([elementName isEqualToString:@"article"]) { if (!content) { Content *tmp = [[Content alloc] init]; [self setContent:tmp]; [tmp release]; } NSString *contentId = [attributeDict objectForKey:@"id"]; [[self content] setContentId:[contentId intValue]]; return; } if ([elementName isEqualToString:@"category"]) { NSString *categoryId = [attributeDict objectForKey:@"id"]; NSString *parentId = [attributeDict objectForKey:@"parent"]; [[self content] setCategoryId:[categoryId intValue]]; [[self content] setParentId:[parentId intValue]]; categoryId = nil; parentId = nil; return; } if ([elementName isEqualToString:@"vCategory"]) { NSString *categoryId = [attributeDict objectForKey:@"id"]; NSString *parentId = [attributeDict objectForKey:@"parent"]; [[self video] setCategoryId:[categoryId intValue]]; [[self video] setParentId:[parentId intValue]]; categoryId = nil; parentId = nil; return; } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if (!currentValue) { currentValue = [[NSMutableString alloc] initWithCapacity:1000]; } if (currentValue != @"\n") [currentValue appendString:string]; } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { NSString *cleanValue = [currentValue stringByReplacingOccurrencesOfString:@"\n" withString:@""] ; if ([elementName isEqualToString:@"articles"]) { self.finished = YES; //[content release]; } if ([elementName isEqualToString:@"article"]) { [[self data] addObject:[self content]]; [self setContent:nil]; [self setPhotos:nil]; [self setVideos:nil]; /* [content release]; content = nil; [videos release]; videos = nil; [photos release]; photos = nil; */ } if ([elementName isEqualToString:@"WebTVItem"]) { [[self data] addObject:[self video]]; [self setVideo:nil]; //[video release]; //video = nil; } if ([elementName isEqualToString:@"title"]) { //NSLog(@"Tit: %@",cleanValue); [[self content] setTitle:cleanValue]; } if ([elementName isEqualToString:@"vTitle"]) { [[self video] setTitle:cleanValue]; } if ([elementName isEqualToString:@"link"]) { //NSURL *url = [[NSURL alloc] initWithString:cleanValue] ; [[self content] setUrl:[NSURL URLWithString:cleanValue]]; [[self content] setLink: cleanValue]; //[url release]; //url = nil; } if ([elementName isEqualToString:@"vLink"]) { [[self video] setLink:cleanValue]; [[self video] setUrl:[NSURL URLWithString:cleanValue]]; } if ([elementName isEqualToString:@"teaser"]) { NSString *tmp = [cleanValue stringByReplacingOccurrencesOfString:@"##BREAK##" withString:@"\n"]; [[self content] setTeaser:tmp]; tmp = nil; } if ([elementName isEqualToString:@"content"]) { NSString *tmp = [cleanValue stringByReplacingOccurrencesOfString:@"##BREAK##" withString:@"\n"]; [[self content] setContent:tmp]; tmp = nil; } if ([elementName isEqualToString:@"category"]) { [[self content] setCategory:cleanValue]; } if ([elementName isEqualToString:@"vCategory"]) { [[self video] setCategory:cleanValue]; } if ([elementName isEqualToString:@"date"]) { [[self content] setDate:cleanValue]; } if ([elementName isEqualToString:@"vDate"]) { [[self video] setDate:cleanValue]; } if ([elementName isEqualToString:@"thumbnail"]) { [[self content] setThumbnail:[NSURL URLWithString:cleanValue]]; [[self content] setThumbnailURL:cleanValue]; } if ([elementName isEqualToString:@"vThumbnail"]) { [[self video] setThumbnailURL:cleanValue]; [[self video] setThumbnail:[NSURL URLWithString:cleanValue]]; } if ([elementName isEqualToString:@"vDirectLink"]){ [[self video] setDirectLink: cleanValue]; } if ([elementName isEqualToString:@"preview"]){ [[self video] setPreview: cleanValue]; } if ([elementName isEqualToString:@"thumbnail_position"]){ [[self content] setThumbnailPosition: cleanValue]; } if ([elementName isEqualToString:@"url"]) { if (self.nowPhoto == YES) { [[self photos] addObject:cleanValue]; } else if (self.nowVideo == YES) { [[self videos] addObject:cleanValue]; } } if ([elementName isEqualToString:@"photos"]) { [[self content] setPhotos:[self photos]]; //[photos release]; //photos = nil; self.nowPhoto = NO; } if ([elementName isEqualToString:@"videos"]) { [[self content] setVideos:[self videos]]; //[videos release]; //videos = nil; self.nowVideo = NO; } //[cleanValue release]; //cleanValue = nil; [currentValue release]; currentValue = nil; } - (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Error" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } -(NSArray*)getData { return data; } -(int)getCount { return [data count]; } - (void)dealloc { [parser release]; //[data release]; //[photos release]; //[videos release]; //[video release]; //[content release]; [currentValue release]; [super dealloc]; } @end Somewhere in my code, I create an instance of this class : XMLParser* feed = [[XMLParser alloc] init]; [self setRssParser:feed]; [feed release]; // Parse feed NSString *url = [NSString stringWithFormat:@"MyXMLURL"]; [[self rssParser] parseXML:[NSURL URLWithString:url]]; Now the problem is that after the first (which has zero leaks), instruments shows leaks in too many parts like this one (they are too much to enumerate them all, but all the calls look the same, I made the leaking line bold) : in didEndElement : if ([elementName isEqualToString:@"link"]) { // THIS LINE IS LEAKING => INSTRUMENTS SAYS IT IS A NSCFString LEAK [self content] setUrl:[NSURL URLWithString:cleanValue]]; [[self content] setLink: cleanValue]; } Any idea how to fix this pealse ? Could this be the same problem as the one mentioned (as an apple bug) by Lee Amtrong here :http://stackoverflow.com/questions/1598928/nsxmlparser-leaking

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• Issue with DFS imlemtation in objetive-c

  - by Hemant

  i am trying to to do something like this Below is my code: -(id) init{ if( (self=[super init]) ) { bubbles_Arr = [[NSMutableArray alloc] initWithCapacity: 9]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"1",@"1",@"1",@"1",@"1",nil] atIndex:0]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"3",@"3",@"5",@"5",@"1",nil] atIndex:1]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"3",@"5",@"3",@"1",nil] atIndex:2]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"3",@"5",@"3",@"1",nil] atIndex:3]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"1",@"1",@"1",@"1",@"1",nil] atIndex:4]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"3",@"5",@"1",nil] atIndex:5]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:6]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:7]; [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:8]; NOCOLOR = @"-1"; R = 9; C = 5; [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(testting) userInfo:Nil repeats:NO]; } return self; } -(void)testting{ // NSLog(@"dataArray---- %@",dataArray.description); int startR = 0; int startC = 0; int color = 1 ;// red // NSString *color = @"5"; //reset visited matrix to false. for(int i = 0; i < R; i++) for(int j = 0; j < C; j++) visited[i][j] = FALSE; //reset count count = 0; [self dfs:startR :startC :color :false]; NSLog(@"count--- %d",count); NSLog(@"test--- %@",bubbles_Arr); } -(void)dfs:(int)ro:(int)co:(int)colori:(BOOL)set{ for(int dr = -1; dr <= 1; dr++) for(int dc = -1; dc <= 1; dc++) if((dr == 0 ^ dc == 0) && [self ok:ro+dr :co+dc]) // 4 neighbors { int nr = ro+dr; int nc = co+dc; NSLog(@"-- %d ---- %d",[[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] integerValue],colori); if ((([[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] integerValue]==1 || [[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] isEqualToString:@"1"]) && !visited[nr][nc])) { visited[nr][nc] = true; count++; [self dfs:nr :nc :colori :set]; if(count>2) { [[bubbles_Arr objectAtIndex:nr] replaceObjectAtIndex:nc withObject:NOCOLOR]; [bubbles[nc+1][nr+1] setTexture:[[CCTextureCache sharedTextureCache] addImage:@"gray_tiger.png"]]; } } } } -(BOOL)ok:(int)r:(int)c{ return r >= 0 && r < R && c >= 0 && c < C; } But it's only working for left to right,not working for right to left. And it is also skipping first object. Thanks in advance.

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• iphone - testing if an object exists

  - by Mike

  I have several apps in my app that can become nil at some point and I have methods that in theory are used to put these objects to nil. But, if I try to put to nil an object that does not exist, the app will crash. for example... [object1 release]; object1 = nil; //... and after that [object removeFromSuperview]; // this will crash Then I thought, why not testing to see if the object exists before removing... if (object1 != nil) [object removeFromSuperview]; // this will crash too, because object1 cannot be tested for nil because it does not exist How can I check if the object exists before testing if it is nil? something as if (object exists( { if(object != nil)) [object removeFromSuperview) } is this possible?

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• add animation to layer's path in cocos2d

  - by greg rock

  so i'm on cocos2d but before I was on a normal ios app and I had this code : -(void)viewDidLoad{ rootLayer = [[CALayer alloc] init]; [imageView.layer addSublayer:rootLayer]; roundPath = CGPathCreateMutable(); CGPathMoveToPoint(roundPath, nil, center.x , center.y - 35); CGPathAddArcToPoint(roundPath, nil, center.x + 35, center.y - 35, center.x + 35, center.y + 35, 35); CGPathAddArcToPoint(roundPath, nil, center.x + 35, center.y + 35, center.x - 35, center.y + 35, 35); CGPathAddArcToPoint(roundPath, nil, center.x - 35, center.y + 35, center.x - 35, center.y, 35); CGPathAddArcToPoint(roundPath, nil, center.x - 35, center.y - 35, center.x, center.y - 35, 35); CGPathCloseSubpath(roundPath); //Box Path boxPath = CGPathCreateMutable(); CGPathMoveToPoint(boxPath, nil, center.x , center.y - 35); CGPathAddArcToPoint(boxPath, nil, center.x + 35, center.y - 35, center.x + 35, center.y + 35, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x + 35, center.y + 35, center.x - 35, center.y + 35, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x - 35, center.y + 35, center.x - 35, center.y, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x - 35, center.y - 35, center.x, center.y - 35, 4.7); CGPathCloseSubpath(boxPath); shapeLayer = [CAShapeLayer layer]; shapeLayer.path = boxPath; [rootLayer addSublayer:shapeLayer]; } -(void)startAnimation { CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"path"]; animation.duration = 2.0; animation.repeatCount = HUGE_VALF; animation.autoreverses = YES; animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; animation.fromValue = (id)boxPath; animation.toValue = (id)roundPath; [shapeLayer addAnimation:animation forKey:@"animatePath"]; } But I didn't found a way to do the animation fromboxpath toroundpath on cocos2d, I don't know what CCAction use . Can anybody help me ? sorry for my english I'm french :/

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• Why is the class wrong for NSFetchRequest?

  - by Stephen Furlani

  Hello, I am working with an undocumented API (Osirix) and I have a sister-question to the one I posted here. I am having trouble loading objects from a managed object context. With loading from API, using their instance of _context and _model 2010-05-28 14:05:13.588 OsiriX[44012:a0f] Entity: Study 2010-05-28 14:05:13.589 OsiriX[44012:a0f] EntityClassName: DicomStudy 2010-05-28 14:05:13.589 OsiriX[44012:a0f] ClassName: DicomStudy With loading from Fetch Request (and my own instance of _context, and _model) 2010-05-28 14:19:09.956 rcOsirix[44431:7a03] Entity: Study 2010-05-28 14:19:09.957 rcOsirix[44431:7a03] EntityClassName: DicomStudy 2010-05-28 14:19:09.958 rcOsirix[44431:7a03] ClassName: NSManagedObject output given by: NSLog(@"Entity: %@",[[item entity] name]); NSLog(@"EntityClassName: %@", [[item entity] managedObjectClassName]); NSLog(@"ClassName: %s", class_getName(object_getClass([item class]))); So it is obvious that even though the Entity thinks it is a DicomSeries - it is not. It is just a NSManagedObject. DicomSeries has some "hard-coded" KVC stuff that I ran into a problem with in my other question. I'm pursuing a different line of reasoning in this thread - with the loading of the objects. The following is their code: - (NSManagedObjectModel *)managedObjectModel { if (managedObjectModel) return managedObjectModel; NSMutableSet *allBundles = [[NSMutableSet alloc] init]; [allBundles addObject: [NSBundle mainBundle]]; [allBundles addObjectsFromArray: [NSBundle allFrameworks]]; managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL: [NSURL fileURLWithPath: [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"/OsiriXDB_DataModel.mom"]]]; [allBundles release]; return managedObjectModel; } - (NSManagedObjectContext *) managedObjectContextLoadIfNecessary:(BOOL) loadIfNecessary { NSError *error = nil; NSString *localizedDescription; NSFileManager *fileManager; if( currentDatabasePath == nil) return nil; if (managedObjectContext) return managedObjectContext; if( loadIfNecessary == NO) return nil; fileManager = [NSFileManager defaultManager]; [persistentStoreCoordinator release]; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: self.managedObjectModel]; managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator: persistentStoreCoordinator]; NSURL *url = [NSURL fileURLWithPath: currentDatabasePath]; if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error]) { NSLog(@"********** managedObjectContextLoadIfNecessary FAILED: %@", error); localizedDescription = [error localizedDescription]; error = [NSError errorWithDomain:@"OsiriXDomain" code:0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:error, NSUnderlyingErrorKey, [NSString stringWithFormat:@"Store Configuration Failure: %@", ((localizedDescription != nil) ? localizedDescription : @"Unknown Error")], NSLocalizedDescriptionKey, nil]]; } [[managedObjectContext undoManager] setLevelsOfUndo: 1]; [[managedObjectContext undoManager] disableUndoRegistration]; // This line is very important, if there is NO database.sql file [self saveDatabase: currentDatabasePath]; return managedObjectContext; } This is my code: NSManagedObjectModel* DataModule::managedObjectModel() { if (_managedObjectModel) return _managedObjectModel; NSMutableSet *allBundles = [[NSMutableSet alloc] init]; [allBundles addObject: [NSBundle mainBundle]]; [allBundles addObjectsFromArray: [NSBundle allFrameworks]]; _managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL: [NSURL fileURLWithPath: [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"/OsiriXDB_DataModel.mom"]]]; [allBundles release]; return [_managedObjectModel retain]; } ... NSError *error = nil; [_storeCoordinator release]; _storeCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: managedObjectModel()]; _context = [[NSManagedObjectContext alloc] init]; [_context setPersistentStoreCoordinator: _storeCoordinator]; NSURL *url = [NSURL fileURLWithPath: [[NSString alloc] initWithCString:_DBPath.c_str()]]; if (url == nil) { [pool release]; _loadLock = false; return nil; } if (![_storeCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error]) { NSLog(@"********** managedObjectContextLoadIfNecessary FAILED: %@", error); NSString *localizedDescription = [error localizedDescription]; error = [NSError errorWithDomain:@"OsiriXDomain" code:0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:error, NSUnderlyingErrorKey, [NSString stringWithFormat:@"Store Configuration Failure: %@", ((localizedDescription != nil) ? localizedDescription : @"Unknown Error")], NSLocalizedDescriptionKey, nil]]; //Exit Failure [pool release]; _loadLock = false; return nil; } [[_context undoManager] setLevelsOfUndo: 1]; [[_context undoManager] disableUndoRegistration]; ... I am including all the same frameworks.... but _allBundles isn't even used to create the managedObjectModel so I don't know what it's supposed to do except load them into memory so that the mom can look at them while loading. Totally lost. Help! Why would objects returned by my FetchRequest with the same Entity come out as NSManagedObjects and not DicomStudys? I'm including DicomStudy.h so it should see the object during creation of the model, context, and fetch request. [request setEntity: [[managedObjectModel() entitiesByName] objectForKey:@"Study"]]; Thanks in advance, -Stephen

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• How do I execute a shell-command in background?

  - by Adobe

  Here's a simple defun to run a shell script: (defun bk-konsoles () "Calls: bk-konsoles.bash" (interactive) (shell-command (concat (expand-file-name "~/its/plts/goodies/bk-konsoles.bash ") (if (buffer-file-name) (file-name-directory (buffer-file-name))) " &") nil nil)) If I start a program with no ampersand - it start the script, but blocks emacs until I close the program, if I don't put ampersand it gives error: /home/boris/its/plts/goodies/bk-konsoles.bash /home/boris/scl/geekgeek/: exited abnormally with code 1. Edit: So now I'm using: (defun bk-konsoles () "Calls: bk-konsoles.bash" (interactive) (shell-command (concat (expand-file-name "~/its/plts/goodies/bk-konsoles.bash ") (if (buffer-file-name) (file-name-directory (buffer-file-name))) " & disown") nil nil) (kill-buffer "*Shell Command Output*")) Edit 2: Nope - doesn't work: (defun bk-konsoles () "Calls: bk-konsoles.bash" (interactive) (let ((curDir default-directory)) ;; (shell-command (concat "nohup " (expand-file-name "~/its/plts/goodies/bk-konsoles.bash ") curDir) nil nil) (shell-command (concat (expand-file-name "~/its/plts/goodies/bk-konsoles.bash ") curDir "& disown") nil nil) (kill-buffer "*Shell Command Output*"))) keeps emacs busy - either with disown, or nohup. Here's a script I'm running if it might be of help: bk-konsoles.bash

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• how to add data to database from rails console

  - by rails_guy

  I have a User model. >> @u = User.new => #<User id: nil, userid: nil, password: nil, created_at: nil, updated_at: nil, user_first_name: nil, user_last_name: nil, user_status: nil, user_type: nil> I am not able to add data to the Users table from the console. I am doing the following: >> @u.userid="test1" => "test1" >> @u.password="test2" => "test2" >> @u.user_first_name="test3" => "test3" >> @u.user_last_name="test4" => "test4" >> @u.user_status="test5" => "test5" >> @u.user_type="test6" => "test6" >> @u.save NoMethodError: undefined method `userid' for nil:NilClass what am i doing wrong? I just simply want to add one row of data to the app.

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• how to get id of the saved record in rails

  - by railsnew

  I am doing this from the console but i'd like to do this in my code too. Basically I am trying to add a record to the table and then get the id back. >> @record = Physician.create(:pname => "someone2") => #<Physician id: nil, pname: "someone2", pgroup: nil, created_at: nil, updated_at: nil, userid: nil, storeid: nil, licexpdate: nil, address: nil> >> @record.save => false >>

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• How to get id of the saved record in Ruby on Rails

  - by railsnew

  I am doing this from the console but I'd like to do this in my code too. Basically I am trying to add a record to the table and then get the id back. >> @record = Physician.create(:pname => "someone2") => #<Physician id: nil, pname: "someone2", pgroup: nil, created_at: nil, updated_at: nil, userid: nil, storeid: nil, licexpdate: nil, address: nil> >> @record.save => false >>

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• Objective-C style question: do "release" or "nil" properties in dealloc?

  - by Piotr Czapla

  Hi, Apple usually release ivars in dealloc but is there anything wrong with nilling the properties in dealloc? I mean instead of this: - (void) dealoc(){ [myRetainedProperty release]; [super dealloc]; } write code like this: - (void) dealoc(){ self.myRetainedProperty = nil; [super dealloc]; } I know that it is one additional method call but on the other hand it is safer as it doesn't crashes when you change your property form retain to assign and forget to amend dealloc. What do you think? Can you think about any other reason to use release instead of setting nil besides performance?

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• Cannot call struct properties from HAML file

  - by Lander

  I have the following code in my controller: @nav_items = ActiveSupport::OrderedHash.new @nav_items[:home] = Struct::NavItem.new("Home", nil, "/", "icon-home") @nav_items[:about] = Struct::NavItem.new("About", nil, "/about", "icon-heart") @nav_items[:contact] = Struct::NavItem.new("Contact", nil, "/contact", "icon-envelope") if (current_user != nil && current_user.admin?) @nav_items[:admin_divider] = Struct::NavItem.new(nil, "divider-vertical", nil, nil) @nav_items[:admin] = Struct::NavItem.new("Admin", nil, "/admin", "") end And the following in my view: - @nav_items.each do |nav_item| %li{ :class => nav_item[:class] } %a{ :href => nav_item[:link] }= nav_item[:text] And my struct definition: Struct.new("NavItem", :text, :class, :link, :icon_class) I'm relatively new to Ruby, Rails, and HAML, but in another project using ERB rendering, code like that worked fine. I've tried referencing properties by doing something like nav_item.link as well, but that still does not work. The error I get with my current code is: Symbol as array index By using code like nav_item.link: undefined method `link' for #< Array:0x126970ff0 As this is my first time using HAML, I'm not too sure what I'm doing wrong.

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• How to create a nil object in Objective C?

  - by Tattat

  Can I create an nil object in Objective C? thz a lot.

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• Why do i get exc bad access in cases when object is not nil?

  - by DixieFlatline

  I have an app that receives remote notifications. My view controller that is shown after push has a tableview. App crashes very randomly (1 in 20 tries) at line setting frame: if (!myTableView) { NSLog(@"self.myTableView is nil"); } myTableView.frame=CGRectMake(0, 70, 320, 376); This only happens when i open the app, then open some other apps and then receive the push notification. I guess it has something to do with memory. I use ARC (ios 5). The strange thing is that nslog is not displayed, so tableview is not nil. Crash log: Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x522d580c Crashed Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libobjc.A.dylib 0x352b1f7e objc_msgSend + 22 1 Foundation 0x37dc174c NSKVOPendingNotificationCreate + 216 2 Foundation 0x37dc1652 NSKeyValuePushPendingNotificationPerThread + 62 3 Foundation 0x37db3744 NSKeyValueWillChange + 408 4 Foundation 0x37d8a848 -[NSObject(NSKeyValueObserverNotification) willChangeValueForKey:] + 176 5 Foundation 0x37e0ca14 _NSSetPointValueAndNotify + 76 6 UIKit 0x312af25a -[UIScrollView(Static) _adjustContentOffsetIfNecessary] + 1890 7 UIKit 0x312cca54 -[UIScrollView setFrame:] + 548 8 UIKit 0x312cc802 -[UITableView setFrame:] + 182 9 POViO 0x000913cc -[FeedVC viewWillAppear:] (FeedVC.m:303) Dealloc is not called because it is not logged: - (void)dealloc { NSLog(@"dealloc"); }

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• can I use NSDictionary values as [@"[array abjectAtIndex:value]", key1,nil] ?

  - by srikanth rongali

  I have a string of comma separated values in this way (0.2,0.3,0.4,1.0). I used componentsSeperatedByString to store the values in an NSArray. Now I need to store them in NSDictionary as (1st value from NSArray), key1, (2nd Value of NsArray), key2,..nil]; My program is in this way NSArray *split1; NSDictionary *enemy1; float value1; for(id line in lines) { string1 = line; split1 = [string1 componentsSeparatedByString:@","]; numberOfValues = [split1 count]; for(id value in split1) { enemy1 = [NSDictionary dictionaryWithObjectsAndKeys:@"[[split1 objectAtIndex:0]flaotValue]", @"A1", nil]; } } value1 = [enemy1 objectForKey:@"A1"]; Here lines is an NSArray consisting of CSV strings of number 10. I am getting error as error: incompatible types in assignment Should I do not write my code in this way? Where I doing wrong ? Please tell me my mistakes. Thank You.

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• Why doe my UITableView only show two rows of each section?

  - by Mike Owens

  I have a UITableView and when I build it only two rows will be displayed. Each section has more than two cells to be displayed, I am confused since they are all done the same?`#import #import "Store.h" import "VideoViewController.h" @implementation Store @synthesize listData; // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [self createTableData]; [super viewDidLoad]; } (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { //self.listData = nil; //[super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } pragma mark - pragma mark Table View Data Source Methods // Customize the number of sections in the table view. - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [videoSections count]; } //Get number of rows -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [self.listData count]; } -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *StoreTableIdentifier = @"StoreTableIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:StoreTableIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:StoreTableIdentifier] autorelease]; } cell.textLabel.text = [[[listData objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"name"]; //Change font and color of tableView cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.textLabel.font=[UIFont fontWithName:@"Georgia" size:16.0]; cell.textLabel.textColor = [UIColor brownColor]; return cell; } -(NSString *)tableView: (UITableView *)tableView titleForHeaderInSection: (NSInteger) section { return [videoSections objectAtIndex:section]; } -(void)tableView: (UITableView *)tableView didSelectRowAtIndexPath: (NSIndexPath *)indexPath { VideoViewController *videoViewController = [[VideoViewController alloc] initWithNibName: @"VideoViewController" bundle:nil]; videoViewController.detailURL = [[NSURL alloc] initWithString: [[[listData objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"url"]]; videoViewController.title = [[[listData objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"name"]; [self.navigationController pushViewController:videoViewController animated:YES]; [videoViewController release]; } pragma mark Table View Methods //Data in table cell -(void) createTableData { NSMutableArray *beginningVideos; NSMutableArray *intermediateVideos; videoSections = [[NSMutableArray alloc] initWithObjects: @"Beginning Videos", @"Intermediate Videos", nil]; beginningVideos = [[NSMutableArray alloc] init]; intermediateVideos = [[NSMutableArray alloc] init]; [beginningVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Shirts", @"name", @"http://www.andalee.com/iPhoneVideos/testMovie.m4v", @"url", nil]]; [beginningVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Posters", @"name", @"http://devimages.apple.com/iphone/samples/bipbopall.html", @"url", nil]]; [beginningVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Stickers",@"name", @"http://www.andalee.com/iPhoneVideos/mov.MOV",@"url",nil]]; [beginningVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Egyptian",@"name", @"http://www.andalee.com/iPhoneVideos/2ndMovie.MOV",@"url",nil]]; [intermediateVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Drum Solo", @"name", @"http://www.andalee.com", @"url", nil]]; [intermediateVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Veil", @"name", @"http://www.andalee.com", @"url", nil]]; [intermediateVideos addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Three Quarter Shimmy",@"name", @"http://www.andalee.com", @"url",nil]]; listData = [[NSMutableArray alloc] initWithObjects:beginningVideos, intermediateVideos, nil]; [beginningVideos release]; [intermediateVideos release]; } (void)dealloc { [listData release]; [videoSections release]; [super dealloc]; } @end `

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• IBOutlet is NIL when using Forward Declarations to call a class?

  - by tarnfeld

  I have been having huge issues with this, so I drew a diagram... I successfully get to the CLASS A - METHOD B but at that point, IBOutlet Z is Nil? :( Any ideas? note Somebody told me it might be an Overrelease and to use NSZombieEnabled but that confused me

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• Prevent <xsi:nil="true"> on Nullable Value Types when Serializing to XML.

  - by Nat Ryall

  I have added some nullable value types to my serializable class. I perform a serialization using XmlSerializer but when the value is set to null, I get an empty node with xsi:nil="true". This is the correct behaviour as I have found here: http://msdn.microsoft.com/en-us/library/ybce7f69%28VS.80%29.aspx Is there a way to switch off this option so that nothing is output when the value type is null?

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