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• iPhone SDK: Memory leak on picker

  - by bbftsoftware

  I have created a picker for my users to pick from a list of countries. The problem is that repeated opening and closing of the picker is resulting in “EXC_BAD_ACCESS” error. I suspect it might be a memory leak but I am not sure. I was hoping someone could shed some insight into why this might be happening? //data source for UIPicker NSArray *arrayCountryChoices; arrayCountryChoices = [[NSArray alloc] initWithObjects:@"TK=TOKELAU", @"TJ=TAJIKISTAN", @"TH=THAILAND", @"TG=TOGO", @"TF=FRENCH SOUTHERN TERRITORIES", @"GY=GUYANA", @"TD=CHAD", nil]; //opening the picker CountryViewController *countryVC = [[CountryViewController alloc] initWithNibName:@"CountryView" bundle:nil]; countryVC.delegate = self; [self presentModalViewController:countryVC animated:YES]; [countryVC release]; //here is where I grab the data //close country selector [self dismissModalViewControllerAnimated:YES]; //parse out code NSString *strCode = [chosenCountry substringToIndex:2]; //set the gui txtCountry.text = strCode; I think it may be because I am trying to release the Country Selector before the delegate has a chance to get its data? Also I am wondring if I should not release the picker until the screen that calls it is released. Thanks in advance.

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• How do I add a button to my navigationController's right side after pushing another view controller

  - by bobobobo

  So, immediately after pushing a view controller to my tableView, // Override to support row selection in the table view. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here -- // for example, create and push another view controller. AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; [self.navigationController pushViewController:anotherViewController animated:YES]; Ok, so that makes another view slide on, and you can go back to the previous view ("pop" the current view) by clicking the button that automatically appears in the top left corner of the navigation bar now. Ok, so SAY I want to populate the RIGHT SIDE of the navigation bar with a DONE button, like in the "Notes" app that comes with the iPhone. How would I do that? I tried code like this: UIBarButtonItem * doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector( doneFunc ) ]; self.navigationController.navigationItem.rightBarButtonItem = doneButton ; // not it.. [doneButton release] ; doneFunc is defined, and everything, just the button never appears on the right side..

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• Default class for SQLAlchemy single table inheritance

  - by eclaird

  I've set up a single table inheritance, but I need a "default" class to use when an unknown polymorphic identity is encountered. The database is not in my control and so the data can be pretty much anything. A working example setup: import sqlalchemy as sa from sqlalchemy import orm engine = sa.create_engine('sqlite://') metadata = sa.MetaData(bind=engine) table = sa.Table('example_types', metadata, sa.Column('id', sa.Integer, primary_key=True), sa.Column('type', sa.Integer), ) metadata.create_all() class BaseType(object): pass class TypeA(BaseType): pass class TypeB(BaseType): pass base_mapper = orm.mapper(BaseType, table, polymorphic_on=table.c.type, polymorphic_identity=None, ) orm.mapper(TypeA, inherits=base_mapper, polymorphic_identity='A', ) orm.mapper(TypeB, inherits=base_mapper, polymorphic_identity='B', ) Session = orm.sessionmaker(autocommit=False, autoflush=False) session = Session() Now, if I insert a new unmapped identity... engine.execute('INSERT INTO EXAMPLE_TYPES (TYPE) VALUES (\'C\')') session.query(BaseType).first() ...things break. Traceback (most recent call last): File "<stdin>", line 1, in <module> File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1619, in first ret = list(self[0:1]) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1528, in __getitem__ return list(res) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1797, in instances rows = [process[0](row, None) for row in fetch] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2179, in _instance _instance = polymorphic_instances[discriminator] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/util.py", line 83, in __missing__ self[key] = val = self.creator(key) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2341, in configure_subclass_mapper discriminator) AssertionError: No such polymorphic_identity u'C' is defined What I expected: >>> result = session.query(BaseType).first() >>> result <BaseType object at 0x1c8db70> >>> result.type u'C' I think this used to work with some older version of SQLAlchemy, but I haven't been keeping up with the development lately. Any pointers on how to accomplish this?

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• Multiple touch problem using UITouch/UIView in iphone

  - by John Qualis

  Hi, I am trying to implement a 2-finger "pinch" and "expand" (or enlarge) on a UIView using iPhone 3G and SDK 3.1.2. I haven't done programmed in UITouch/UIEvent before, so I appreciate any guidance to the problem I am facing. When I touch the screen with 2 fingers I see that sometimes "touchesBegan" gives me only 1 event. I need UITouch event count == 2 to measure the distance between 2 fingers. Hence I have to lift up my fingers and repeat this process again till I get both fingers to be detected. Is there a way around? Can I improve it? The actual resize works correctly once both fingers are detected but this issue seen at the start needs to be resolved. I know SDK 3.2 detects gestures such as pinch but I was wondering how it can be done in 3.1.2? The code is given below. The "OnFingerDown" function gets called randomly even when I put 2 fingers down whereas I want "onTwoFingersDown" to be called each time. Moreover the I get only 1 touch event each time I put my fingers down. I mean if "OnFingerDown" was called twice I could somehow get it to work. Thanks in advance. Appreciate any help. John - (void) touchesBegan: (NSSet*) touches withEvent: (UIEvent*) event { UITouch* touch, *touch1; CGPoint location, location1; if([[event allTouches] count] == 1) { touch=[UI[[event allTouches] allObjects] objectAtIndex:0]; location=[touch locationInView:self]; OnFingerDown(location); } else if([[event allTouches] count] == 2) { touch=[[[event allTouches] allObjects] objectAtIndex:0]; location=[touch locationInView:self]; touch1=[[[event allTouches] allObjects] objectAtIndex:1]; location1=[touch1 locationInView:self]; OnTwoFingersDown(location, location1); } }

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• django-mptt: how to successfully move nodes around

  - by Parand

  django-mptt seems determined to drive me out of my mind. I'm trying to do something relatively simple: I'm going to delete a node, and need to do something reasonable with the node's children. Namely, I'd like to move them up one level so they're children of their current parent's parent. That is, if the tree looks like: Root | Grandpa | Father | | C1 C2 I'm going to delete Father, and would like C1 and C2 to be children of Grandpa. Here's the code I'm using: class Node(models.Model): first_name = models.CharField(max_length=80, blank=True) parent = models.ForeignKey('self', null=True, blank=True, related_name='children') def reparent_children(self, parent): print "Reparenting" for child in self.get_children(): print "Working on", child.first_name, "to parent", parent.email parent = Node.objects.get(id=parent.id) child.move_to(parent, 'last-child') child.save() So I'd call: father.reparent_children(grandpa) father.parent = None father.save() This works - almost. The children report their parents as Grandpa: c1.parent == grandpa # True Grandpa counts C1 and C2 among its children c1 in grandpa.children.all() # True However, Root disowns these kids. c1.get_root() == father # c1's root is father, instead of Root c1 in root.get_descendants() # False How do I get the children to move and their root not get corrupted?

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• [iPhone] Background color during flip view animation/transition?

  - by Rob S.

  I have some pretty standing flipping action going on: [UIView beginAnimations:@"swapScreens" context:nil]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES]; [UIView setAnimationDuration:1.0]; [self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [UIView commitAnimations]; To Apple's credit, this style of animation is amazingly easy to work with. Very cool, and I've been able to animate transitions, flips, fades etc. throughout the app very easily. Question: During the flip transition, the background visible 'behind' the two views during the flip is white and I'd like it to be black. I've: Set the background of the containing view (self.view above) - no dice. I really thought that would work. Set the background of each view to black - no dice. I didn't think this would work although you give different things a shot to understand better :) Google'd like crazy; keep landing on Safari-related listings. Thanks in advance!

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• iPhone:How to set background image for tablerow cell?

  - by user187532

  Hello all, I want to put some background image for TableView row cell. I am using the following code: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ..................... ................... UIImage * backgroundImage = [UIImage imageNamed:@"cell.png"]; UIColor *backgroundColor = [[UIColor alloc] initWithPatternImage:backgroundImage]; cell.opaque = NO; cell.contentView.opaque = NO; cell.backgroundColor = [UIColor clearColor]; cell.backgroundColor = backgroundColor; //cell.contentView.backgroundColor = [UIColor clearColor]; //cell.contentView.backgroundColor = backgroundColor; } But it is not giving the background image properly. Could someone guide me what is the proper ways of setting background image for a tableview row? Note: I'm also setting background image for my TableView as well using the below code: UIImage * backgroundImage = [UIImage imageNamed:@"Tablebackground.png"]; UIColor *backgroundColor = [[UIColor alloc] initWithPatternImage:backgroundImage]; self.myTableView.backgroundColor = [UIColor clearColor]; self.myTableView.alpha = 0.9; self.myTableView.backgroundColor = backgroundColor; I don't observe any problem for tableview background. Only thing here is, tableview background image is not being static, when scrolling happening, image is also scrolling. But i want to know first how to set background image for Tableview row cell? Thank you.

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• How to determine the size (in bytes) of a file downloading using NSURLConnection?

  - by RexOnRoids

  I need to know the size of the file I am downloading (in bytes) into my app using NSURLConnection (GET). Here is my bytes recieved code below if it helps. What I need to know is how to get the filesize in bytes so that I can use it to show a UIProgressView. - (void)connection:(NSURLConnection *)theConnection didReceiveData:(NSData *)data // A delegate method called by the NSURLConnection as data arrives. We just // write the data to the file. { #pragma unused(theConnection) NSInteger dataLength; const uint8_t * dataBytes; NSInteger bytesWritten; NSInteger bytesWrittenSoFar; assert(theConnection == self.connection); dataLength = [data length]; dataBytes = [data bytes]; bytesWrittenSoFar = 0; do { bytesWritten = [self.fileStream write:&dataBytes[bytesWrittenSoFar] maxLength:dataLength - bytesWrittenSoFar]; assert(bytesWritten != 0); if (bytesWritten == -1) { [self _stopReceiveWithStatus:@"File write error"]; break; } else { bytesWrittenSoFar += bytesWritten; } while (bytesWrittenSoFar != dataLength); }

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• Boto - How to delete a record set from route53 -Tried to delete resource record set but it was not found

  - by Tampa

  I am using the following to delete route53 records. I get no error messages. conn = Route53Connection(aws_access_key_id, aws_secret_access_key) changes = ResourceRecordSets(conn, zone_id) change = changes.add_change("DELETE",sub_domain, "A", 60,weight=weight,identifier=identifier) change.add_value(ip_old) changes.commit() all required fields are present and they match..weight, identifier, ttl=60 etc.\ e.g. test.com. A 111.111.111.111 60 1 id1 test.com. A 111.111.111.222 60 1 id2 I want to delete 111.111.111.222 and the record set. So, what is the proper way to delete a record set? For a record set, I will have multiple values that are distinguished by a unique identifier. When an ip address becomes in active I want to remove from route53. I am using a a poor mans load balancing. Here is the meta of the record want to delete. {'alias_dns_name': None, 'alias_hosted_zone_id': None, 'identifier': u'15754-1', 'name': u'hui.com.', 'resource_records': [u'103.4.xxx.xxx'], 'ttl': u'60', 'type': u'A', 'weight': u'1'} Traceback (most recent call last): File "/home/ubuntu/workspace/rtbopsConfig/classes/redis_ha.py", line 353, in <module> deleteRedisSubDomains(aws_access_key_id, aws_secret_access_key,platform=platform,sub_domain=sub_domain,redis_domain=redis_domain,zone_id=zone_id,ip_address=ip_address,weight=1,identifier=identifier) File "/home/ubuntu/workspace/rtbopsConfig/classes/redis_ha.py", line 341, in deleteRedisSubDomains changes.commit() File "/usr/local/lib/python2.7/dist-packages/boto-2.3.0-py2.7.egg/boto/route53/record.py", line 131, in commit return self.connection.change_rrsets(self.hosted_zone_id, self.to_xml()) File "/usr/local/lib/python2.7/dist-packages/boto-2.3.0-py2.7.egg/boto/route53/connection.py", line 291, in change_rrsets body) boto.route53.exception.DNSServerError: DNSServerError: 400 Bad Request <?xml version="1.0"?> <ErrorResponse xmlns="https://route53.amazonaws.com/doc/2011-05-05/"><Error><Type>Sender</Type><Code>InvalidChangeBatch</Code><Message>Tried to delete resource record set hui.com., type A, SetIdentifier 15754-1 but it was not found</Message></Error><RequestId>9972af89-cb69-11e1-803b-7bde5b9c457d</RequestId></ErrorResponse> Thanks

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• Django forms, inheritance and order of form fields

  - by Hannson

  I'm using Django forms in my website and would like to control the order of the fields. Here's how I define my forms: class edit_form(forms.Form): summary = forms.CharField() description = forms.CharField(widget=forms.TextArea) class create_form(edit_form): name = forms.CharField() The name is immutable and should only be listed when the entity is created. I use inheritance to add consistency and DRY principles. What happens which is not erroneous, in fact totally expected, is that the name field is listed last in the view/html but I'd like the name field to be on top of summary and description. I do realize that I could easily fix it by copying summary and description into create_form and loose the inheritance but I'd like to know if this is possible. Why? Imagine you've got 100 fields in edit_form and have to add 10 fields on the top in create_form - copying and maintaining the two forms wouldn't look so sexy then. (This is not my case, I'm just making up an example) So, how can I override this behavior? Edit: Apparently there's no proper way to do this without going through nasty hacks (fiddling with .field attribute). The .field attribute is a SortedDict (one of Django's internal datastructures) which doesn't provide any way to reorder key:value pairs. It does how-ever provide a way to insert items at a given index but that would move the items from the class members and into the constructor. This method would work, but make the code less readable. The only other way I see fit is to modify the framework itself which is less-than-optimal in most situations. In short the code would become something like this: class edit_form(forms.Form): summary = forms.CharField() description = forms.CharField(widget=forms.TextArea) class create_form(edit_form): def __init__(self,*args,**kwargs): forms.Form.__init__(self,*args,**kwargs) self.fields.insert(0,'name',forms.CharField()) That shut me up :)

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• Why is my code signing (MS authenticode) verification failing?

  - by Tim

  I posted this question and have a freshly minted code signing cert from Thawte. I followed the instructions (or so I thought) and the code signing claims to be done right, however when I try to verify the tool shows an error. I have no idea what it means and no idea how to fix this. Any comments would be appreciated. Command line to sign exe: signtool sign /f mdt.pfx /p password /t http://timestamp.verisign.com/scripts/timstamp.dll test.exe Results: The following certificate was selected: Issued to: [my company] Issued by: Thawte Code Signing CA Expires: 4/23/2011 7:59:59 PM SHA1 hash: 7D1A42364765F8969E83BC00AB77F901118F3601 Done Adding Additional Store Attempting to sign: test.exe Successfully signed and timestamped: test.exe Number of files successfully Signed: 1 Number of warnings: 0 Number of errors: 0 Note that there are no errors or warnings. Now, when I try to verify imagine my surprise: signtool verify /v test.exe results in: Verifying: test.exe SHA1 hash of file: 490BA0656517D3A322D19F432F1C6D40695CAD22 Signing Certificate Chain: Issued to: Thawte Premium Server CA Issued by: Thawte Premium Server CA Expires: 12/31/2020 7:59:59 PM SHA1 hash: 627F8D7827656399D27D7F9044C9FEB3F33EFA9A Issued to: Thawte Code Signing CA Issued by: Thawte Premium Server CA Expires: 8/5/2013 7:59:59 PM SHA1 hash: A706BA1ECAB6A2AB18699FC0D7DD8C7DE36F290F Issued to: [my company] Issued by: Thawte Code Signing CA Expires: 4/23/2011 7:59:59 PM SHA1 hash: 7D1A42364765F8969E83BC00AB77F901118F3601 The signature is timestamped: 4/27/2010 10:19:19 AM Timestamp Verified by: Issued to: Thawte Timestamping CA Issued by: Thawte Timestamping CA Expires: 12/31/2020 7:59:59 PM SHA1 hash: BE36A4562FB2EE05DBB3D32323ADF445084ED656 Issued to: VeriSign Time Stamping Services CA Issued by: Thawte Timestamping CA Expires: 12/3/2013 7:59:59 PM SHA1 hash: F46AC0C6EFBB8C6A14F55F09E2D37DF4C0DE012D Issued to: VeriSign Time Stamping Services Signer - G2 Issued by: VeriSign Time Stamping Services CA Expires: 6/14/2012 7:59:59 PM SHA1 hash: ADA8AAA643FF7DC38DD40FA4C97AD559FF4846DE Number of files successfully Verified: 0 Number of warnings: 0 Number of errors: 1

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• How to move to next textfield using keyboardtype numberandpunctuation using textfield notification

  - by Rani

  Hi guys, I am having code ItemsController.h UITextField* quantity; UITextField* rate; UITextField* tax2; ItemController.m quantity=[[UITextField alloc]initWithFrame:CGRectMake(158,10.5,140,30)]; quantity.textColor = [UIColor blackColor]; quantity.font = [UIFont systemFontOfSize:15.0]; quantity.backgroundColor = [UIColor clearColor]; quantity.returnKeyType=UIReturnKeyNext; quantity.keyboardType = UIKeyboardTypeNumbersAndPunctuation; quantity.leftViewMode = UITextFieldViewModeAlways; quantity.delegate = self; rate=[[UITextField alloc]initWithFrame:CGRectMake(158,10.5,140,30)]; rate.textColor = [UIColor blackColor]; rate.font = [UIFont systemFontOfSize:15.0]; rate.backgroundColor = [UIColor clearColor]; rate.returnKeyType=UIReturnKeyNext; rate.keyboardType = UIKeyboardTypeNumbersAndPunctuation; rate.leftViewMode = UITextFieldViewModeAlways; rate.delegate = self; tax2=[[UITextField alloc]initWithFrame:CGRectMake(158,10.5,140,30)]; tax2.textColor = [UIColor blackColor]; tax2.font = [UIFont systemFontOfSize:15.0]; tax2.backgroundColor = [UIColor clearColor]; tax2.returnKeyType=UIReturnKeyDone; tax2.keyboardType = UIKeyboardTypeAlphabet; tax2.leftViewMode = UITextFieldViewModeAlways; tax2.delegate = self; - (BOOL)textFieldShouldReturn:(UITextField*)textField { if(textField==quantity) { [rate becomeFirstResponder]; } if(textField == rate) { [tax2 becomeFirstResponder]; } else if(textField==tax2) { [textField resignFirstResponder]; } return YES; } Using UITextfield notifications while I am moving from quantity textfield to rate textfield the keyboard type is alphabetical its getting actually I gav eit has Number and punctuation why I am not getting. can any one help me to solve this as soon as possible. Thanks in advance.

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• Run unittest in a Class

  - by chrissygormley

  Hello, I have a test suite to perform smoke tests. I have all my script stored in various classes but when I try and run the test suite I can't seem to get it working if it is in a class. The code is below: (a class to call the tests) from alltests import SmokeTests class CallTests(SmokeTests): def integration(self): self.suite() if __name__ == '__main__': run = CallTests() run.integration() And the test suite: class SmokeTests(): def suite(self): #Function stores all the modules to be tested modules_to_test = ('external_sanity', 'internal_sanity') alltests = unittest.TestSuite() for module in map(__import__, modules_to_test): alltests.addTest(unittest.findTestCases(module)) return alltests if __name__ == '__main__': unittest.main(defaultTest='suite') So I can see how to call a normal function defined but I'm finding it difficult calling in the suite. In one of the tests the suite is set up like so: class InternalSanityTestSuite(unittest.TestSuite): # Tests to be tested by test suite def makeInternalSanityTestSuite(): suite = unittest.TestSuite() suite.addTest(TestInternalSanity("BasicInternalSanity")) suite.addTest(TestInternalSanity("VerifyInternalSanityTestFail")) return suite def suite(): return unittest.makeSuite(TestInternalSanity) If I have def suite() inside the class SmokeTests the script executes but the tests don't run but if I remove the class the tests run. I run this as a script and call in variables into the tests. I do not want to have to run the tests by os.system('python tests.py'). I was hoping to call the tests through the class I have like any other function. This need's to be called from a class as the script that I'm calling it from is Object Oriented. If anyone can get the code to be run using Call Tests I would appreciate it alot. Thanks for any help in advance.

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• How to use class_eval <<-"end_eval" in Ruby? Not parsing correctly

  - by viatropos

  I would like to define dynamic methods based on some options people give when instantiating it. So in their AR model, they'd do something like this: acts_as_something :class_name => "CustomClass" I'm trying to implement that like so: module MyModule def self.included(base) as = Config.class_name.underscore foreign_key = "#{as}_id" # 1 - class eval, throws these errors # ~/test-project/helpers/form.rb:45: syntax error, unexpected $undefined # @ ||= MyForm.new( # ^ # ~/test-project/helpers/form.rb:46: syntax error, unexpected ',' #~/test-project/helpers/form.rb:48: syntax error, unexpected ')', # expecting kEND from ~/test-project/helpers.rb:12:in `include' base.class_eval <<-"end_eval", __FILE__, __LINE__ attr_accessor :#{as} def #{as} @#{as} ||= MyForm.new( :id => self.#{foreign_key}, :title => self.title ) @#{as} end end_eval end end But it's throwing a bunch of errors I've printed in the comments. Am I using this incorrectly? What are some better ways I can define dynamic method names and dynamic names inside the method like this? I see people use this often instead of define_method (see these classes in resource_controller and couchrest toward the bottom). What I missing here? Thanks for the help

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• How to scroll programmetically to selected cover in coverflow view ?

  - by hib

  Hi all , I am using a coverflow component for my application . It is working nicely till now . But now I want to scroll to selected cover in coverflow . I am currently doing this : TKCoverView *cover = [self.coverflow coverAtIndex:currentIndex]; CGRect frame = cover.frame ; frame.origin.x = frame.origin.x * 1.2; // **main setting** [self.coverflow bringCoverAtIndexToFront:currentIndex animated:YES]; [self.coverflow scrollRectToVisible:frame animated:YES]; and the cover At index method - (TKCoverView*) coverflowView:(TKCoverflowView*)coverflowView coverAtIndex:(int)index{ TKCoverView *cover = [coverflowView dequeueReusableCoverView]; NSLog(@"Index value :%i",index); if(cover == nil){ cover = [[[TKCoverView alloc] initWithFrame:CGRectMake(0, 0, 224, 300)] autorelease]; // 224 cover.baseline = 224; cover.image = [UIImage imageNamed:@"Placeholder_2.png"]; cover.tag = index; }else { cover.image = ((object *)[array objectAtIndex:index]).appIconNormal; } return cover; and - (TKCoverView*) dequeueReusableCoverView{ if(yard == nil || [yard count] < 1) return nil; TKCoverView *v = [[[yard lastObject] retain] autorelease]; v.layer.transform = CATransform3DIdentity; [yard removeLastObject]; return v; } So can any one tell me what is the perfect and standard way of setting the frame for the scrollRectToVisibleRegion method .

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• How to Select Items in Dropdown in Selenium

  - by Marcus Gladir

  Firstly, I have been trying to get the dropdown from this web page: http://solutions.3m.com/wps/portal/3M/en_US/Interconnect/Home/Products/ProductCatalog/Catalog/?PC_Z7_RJH9U5230O73D0ISNF9B3C3SI1000000_nid=RFCNF5FK7WitWK7G49LP38glNZJXPCDXLDbl This is the code I have: import urllib2 from bs4 import BeautifulSoup import re from pprint import pprint import sys from selenium import common from selenium import webdriver import selenium.webdriver.support.ui as ui from boto.s3.key import Key import requests url = 'http://solutions.3m.com/wps/portal/3M/en_US/Interconnect/Home/Products/ProductCatalog/Catalog/?PC_Z7_RJH9U5230O73D0ISNF9B3C3SI1000000_nid=RFCNF5FK7WitWK7G49LP38glNZJXPCDXLDbl' element_xpath = '//*[@id="Component1"]' driver = webdriver.PhantomJS() driver.get(url) element = driver.find_element_by_xpath(element_xpath) element_xpath = '/option[@value="02"]' all_options = element.find_elements_by_tag_name("option") for option in all_options: print("Value is: %s" % option.get_attribute("value")) option.click() source = driver.page_source.encode('utf-8', 'ignore') driver.quit() source = str(source) soup = BeautifulSoup(source, 'html.parser') print soup What prints out is this: Traceback (most recent call last): File "../../../../test.py", line 58, in <module> Value is: XX main() File "../../../../test.py", line 46, in main option.click() File "/home/eric/dev/octocrawler-env/local/lib/python2.7/site-packages/selenium-2.33.0-py2.7.egg/selenium/webdriver/remote/webelement.py", line 54, in click self._execute(Command.CLICK_ELEMENT) File "/home/eric/dev/octocrawler-env/local/lib/python2.7/site-packages/selenium-2.33.0-py2.7.egg/selenium/webdriver/remote/webelement.py", line 228, in _execute return self._parent.execute(command, params) File "/home/eric/dev/octocrawler-env/local/lib/python2.7/site-packages/selenium-2.33.0-py2.7.egg/selenium/webdriver/remote/webdriver.py", line 165, in execute self.error_handler.check_response(response) File "/home/eric/dev/octocrawler-env/local/lib/python2.7/site-packages/selenium-2.33.0-py2.7.egg/selenium/webdriver/remote/errorhandler.py", line 158, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.ElementNotVisibleException: Message: u'{"errorMessage":"Element is not currently visible and may not be manipulated","request":{"headers":{"Accept":"application/json","Accept-Encoding":"identity","Connection":"close","Content-Length":"81","Content-Type":"application/json;charset=UTF-8","Host":"127.0.0.1:51413","User-Agent":"Python-urllib/2.7"},"httpVersion":"1.1","method":"POST","post":"{\\"sessionId\\": \\"30e4fd50-f0e4-11e3-8685-6983e831d856\\", \\"id\\": \\":wdc:1402434863875\\"}","url":"/click","urlParsed":{"anchor":"","query":"","file":"click","directory":"/","path":"/click","relative":"/click","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/click","queryKey":{},"chunks":["click"]},"urlOriginal":"/session/30e4fd50-f0e4-11e3-8685-6983e831d856/element/%3Awdc%3A1402434863875/click"}}' ; Screenshot: available via screen And the weirdest most infuriating bit of it all is that sometimes it actually all works out. I have no clue what's going on here.

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• AVAudioPlayer only initializes with some files

  - by Brendan

  Hi everyone, I'm having trouble playing some files with AVAudioPlayer. When I try to play a certain m4a, it works fine. It also works with an mp3 that I try. However it fails on one particular mp3 every time (15 Step, by Radiohead), regardless of the order in which I try to play them. The audio just does not play, though the view loading and everything that happens concurrently happens correctly. The code is below. I get the "Player loaded." log output on the other two songs, but not on 15 Step. I know the file path is correct (I have it log outputted earlier in the app, and it is correct). Any ideas? NSData *musicData = [NSData dataWithContentsOfURL:[[NSURL alloc] initFileURLWithPath:[[NSBundle mainBundle] pathForResource:[song filename] ofType:nil]]]; NSLog([[NSBundle mainBundle] pathForResource:[song filename] ofType:nil]); if(musicData) { NSLog(@"File found."); } self.songView.player = [[AVAudioPlayer alloc] initWithData:musicData error:nil]; if(self.songView.player) { NSLog(@"Player loaded."); } [self.songView.player play]; NSLog(@"You should be hearing something now."); Thanks, Brendan

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• weak or strong for IBOutlet and other

  - by Piero

  I have switched my project to ARC, and I don't understand if I have to use strong or weak for IBOutlets. Xcode do this: in interface builder, if a create a UILabel for example and I connect it with assistant editor to my ViewController, it create this: @property (nonatomic, strong) UILabel *aLabel; It uses the strong, instead I read a tutorial on RayWenderlich website that say this: But for these two particular properties I have other plans. Instead of strong, we will declare them as weak. @property (nonatomic, weak) IBOutlet UITableView *tableView; @property (nonatomic, weak) IBOutlet UISearchBar *searchBar; Weak is the recommended relationship for all outlet properties. These view objects are already part of the view controller’s view hierarchy and don’t need to be retained elsewhere. The big advantage of declaring your outlets weak is that it saves you time writing the viewDidUnload method. Currently our viewDidUnload looks like this: - (void)viewDidUnload { [super viewDidUnload]; self.tableView = nil; self.searchBar = nil; soundEffect = nil; } You can now simplify it to the following: - (void)viewDidUnload { [super viewDidUnload]; soundEffect = nil; } So use weak, instead of the strong, and remove the set to nil in the videDidUnload, instead Xcode use the strong, and use the self... = nil in the viewDidUnload. My question is: when do I have to use strong, and when weak? I want also use for deployment target iOS 4, so when do I have to use the unsafe_unretain? Anyone can help to explain me well with a small tutorial, when use strong, weak and unsafe_unretain with ARC?

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• String trouble in Rave Reports 8

  - by Jørn E. Angeltveit

  We are currently working with Delphi 2006, but we are now very ready to move on to Delphi 2010. The problem lies in our Rave reports, though... We just get to many string errors when running our reports with Rave 8. And they just don't make any sense. (The reports compile with no error, and we can even run them without any error in Rave 6.) For instance: //This event causes access violation (in rtl14.bpl) at run time { Event for Page1.OnBeforeReport } function Page1_OnBeforeReport(Self: TRavePage); var s: String; begin s := 'My text in param'; s := s + ' and som more text'; s := copy(s,1,length(s)) + ' and then some more'; RaveProject.SetParam('MyTestParam', s); end OnBeforeReport; //This event works OK { Event for Page1.OnBeforeReport } function Page1_OnBeforeReport(Self: TRavePage); var s: String; begin s := 'My text in param'; s := s + ' and som more text'; s := copy(s,1,length(s)); // + ' and then some more'; RaveProject.SetParam('MyTestParam', s); end OnBeforeReport; //This event works OK too { Event for Page1.OnBeforeReport } function Page1_OnBeforeReport(Self: TRavePage); var s: String; begin s := 'My text in param'; s := s + ' and som more text'; s := copy(s,1,length(s)) + s; RaveProject.SetParam('MyTestParam', s); end OnBeforeReport; We really want to stick to Rave, because we have a lot of reports (150+) with a lot of functionality (sql statements, events etc). Besides, we have customers who have designed their own custom reports as well. Does anybody know the reason for these errors? Is there any solution or workaround to these problems?

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• rails i18n - translating text with links inside.

  - by egarcia

  Hi there! I'd like to i18n a text that looks like this: Already signed up? Log in! Note that there is a link on the text. On this example it points to google - in reality it will point to my app's log_in_path. I've found two ways of doing this, but none of them looks "right". The first way I know involves having this my en.yml: log_in_message: "Already signed up? <a href='{{url}}'>Log in!</a>" And in my view: <p> <%= t('log_in_message', :url => login_path) %> </p> This works, but having the <a href=...</a> part on the en.yml doesn't look very clean to me. The other option I know is using localized views - login.en.html.erb, and login.es.html.erb. This also doesn't feel right since the only different line would be the aforementioned one; the rest of the view (~30 lines) would be repeated for all views. It would not be very DRY. I guess I could use "localized partials" but that seems too cumberstone; I think I prefer the first option to having so many tiny view files. So my question is: is there a "proper" way to implement this?

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• How to do custom display and auto-select in django admin multi-select field?

  - by rsp

  I'm new to django, so please feel free to tell me if I'm doing this incorrectly. I am trying to create a django ordering system. My order model: class Order(models.Model): ordered_by = models.ForeignKey(User, limit_choices_to = {'groups__name': "Managers", 'is_active': 1}) in my admin ANY user can enter an order, but ordered_by must be someone in the group "managers" (this is the behavior I want). Now, if the logged in user happens to be a manager I want it to automatically fill in the field with that logged in user. I have accomplished this by: class OrderAdmin(admin.ModelAdmin): def formfield_for_foreignkey(self, db_field, request, **kwargs): if db_field.name == "ordered_by": if request.user in User.objects.filter(groups__name='Managers', is_active=1): kwargs["initial"] = request.user.id kwargs["empty_label"] = "-------------" return db_field.formfield(**kwargs) return super(OrderAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs) This also works, but the admin puts the username as the display for the select box by default. It would be nice to have the user's real name listed. I was able to do it with this: class UserModelMultipleChoiceField(forms.ModelMultipleChoiceField): def label_from_instance(self, obj): return obj.first_name + " " + obj.last_name class OrderForm(forms.ModelForm): ordered_by = UserModelChoiceField(queryset=User.objects.all().filter(groups__name='Managers', is_active=1)) class OrderAdmin(admin.ModelAdmin): form = OrderForm My problem: I can't to both of these. If I put in the formfield_for_foreignkey function and add form = OrderForm to use my custom "UserModelChoiceField", it puts the nice name display but it won't select the currently logged in user. I'm new to this, but my guess is that when I use UserModelChoiceField it "erases" the info passed in via formfield_for_foreignkey. Do I need to use the super() function somehow to pass on this info? or something completely different?

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• Parsing unicode XML with Python SAX on App Engine

  - by Derek Dahmer

  I'm using xml.sax with unicode strings of XML as input, originally entered in from a web form. On my local machine (python 2.5, using the default xmlreader expat, running through app engine), it works fine. However, the exact same code and input strings on production app engine servers fail with "not well-formed". For example, it happens with the code below: from xml import sax class MyHandler(sax.ContentHandler): pass handler = MyHandler() # Both of these unicode strings return 'not well-formed' # on app engine, but work locally xml.parseString(u"<a>b</a>",handler) xml.parseString(u"<!DOCTYPE a[<!ELEMENT a (#PCDATA)> ]><a>b</a>",handler) # Both of these work, but output unicode xml.parseString("<a>b</a>",handler) xml.parseString("<!DOCTYPE a[<!ELEMENT a (#PCDATA)> ]><a>b</a>",handler) resulting in the error: File "<string>", line 1, in <module> File "/base/python_dist/lib/python2.5/xml/sax/__init__.py", line 49, in parseString parser.parse(inpsrc) File "/base/python_dist/lib/python2.5/xml/sax/expatreader.py", line 107, in parse xmlreader.IncrementalParser.parse(self, source) File "/base/python_dist/lib/python2.5/xml/sax/xmlreader.py", line 123, in parse self.feed(buffer) File "/base/python_dist/lib/python2.5/xml/sax/expatreader.py", line 211, in feed self._err_handler.fatalError(exc) File "/base/python_dist/lib/python2.5/xml/sax/handler.py", line 38, in fatalError raise exception SAXParseException: <unknown>:1:1: not well-formed (invalid token) Any reason why app engine's parser, which also uses python2.5 and expat, would fail when inputting unicode?

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• Codesign returns exit code of 11 for xcode iphone project -- can't find documentation on exit code 1

  - by Larry Freeman

  Hi Everyone, I'm new to iPhone development. I am trying to get Xcode to run an application on a phone. The app works fine in the simulator. Initially I hit the error: The executable was signed with invalid entitlements I followed the steps here: http://stackoverflow.com/questions/1074546/the-executable-was-signed-with-invalid-entitlements But now I am getting an exit code of 11. I checked the documentation on codesign but I can't find any mention of an exit code 11 (http://gemma.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/codesign.1.html) Below is the log I am getting. Any help is greatly appreciated. I am using iPhone OS 3.1.3. Build HubPages of project HubPages with configuration Debug CodeSign build/Debug-iphoneos/HubPages.app cd /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone setenv IGNORE_CODESIGN_ALLOCATE_RADAR_7181968 /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /usr/bin/codesign -f -s "iPhone Developer: Larry Freeman (LT6G4W62Z2)" --resource-rules=/Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/Debug-iphoneos/HubPages.app/Entitlements.plist --entitlements /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/HubPages.build/Debug-iphoneos/HubPages.build/HubPages.xcent /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/Debug-iphoneos/HubPages.app Command /usr/bin/codesign failed with exit code 11 Thanks! -Larry

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• Date since 1600 to NSDate?

  - by Steven Fisher

  I have a date that's stored as a number of days since January 1, 1600 that I need to deal with. This is a legacy date format that I need to read many, many times in my application. Previously, I'd been creating a calendar, empty date components and root date like this: self.gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier: NSGregorianCalendar ] autorelease]; id rootComponents = [[[NSDateComponents alloc] init] autorelease]; [rootComponents setYear: 1600]; [rootComponents setMonth: 1]; [rootComponents setDay: 1]; self.rootDate = [gregorian dateFromComponents: rootComponents]; self.offset = [[[NSDateComponents alloc] init] autorelease]; Then, to convert the integer later to a date, I use this: [offset setDay: theLegacyDate]; id eventDate = [gregorian dateByAddingComponents: offset toDate: rootDate options: 0]; (I never change any values in offset anywhere else.) The problem is I'm getting a different time for rootDate on iOS vs. Mac OS X. On Mac OS X, I'm getting midnight. On iOS, I'm getting 8:12:28. (So far, it seems to be consistent about this.) When I add my number of days later, the weird time stays. OS | legacyDate | rootDate | eventDate ======== | ========== | ==========================|========================== Mac OS X | 143671 | 1600-01-01 00:00:00 -0800 | 1993-05-11 00:00:00 -0700 iOS | 143671 | 1600-01-01 08:12:28 +0000 | 1993-05-11 07:12:28 +0000 In the previous release of my product, I didn't care about the time; now I do. Why the weird time on iOS, and what should I do about it? (I'm assuming the hour difference is DST.) I've tried setting the hour, minute and second of rootComponents to 0. This has no impact. If I set them to something other than 0, it adds them to 8:12:28. I've been wondering if this has something to do with leap seconds or other cumulative clock changes. Or is this entirely the wrong approach to use on iOS?

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• Should all public methods of an API be documented?

  - by cynicalman

  When writing "library" type classes, is it better practice to always write markup documentation (i.e. javadoc) in java or assume that the code can be "self-documenting"? For example, given the following method stub: /** * Copies all readable bytes from the provided input stream to the provided output * stream. The output stream will be flushed, but neither stream will be closed. * * @param inStream an InputStream from which to read bytes. * @param outStream an OutputStream to which to copy the read bytes. * @throws IOException if there are any errors reading or writing. */ public void copyStream(InputStream inStream, OutputStream outStream) throws IOException { // copy the stream } The javadoc seems to be self-evident, and noise that just needs to be updated if the funcion is changed at all. But the sentence about flushing and not closing the stream could be valuable. So, when writing a library, is it best to: a) always document b) document anything that isn't obvious c) never document (code should speak for itself!) I usually use b), myself (since the code can be self-documenting otherwise)...

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