Results for query "Assertion failure at ips_proto"

Swift 4 - Assertion failure in -[UICollectionView _createPreparedCellForItemAtIndexPath

881320+0200 liveExperience[1556:568711] *** Assertion failure in -[UICollectionView _createPreparedCellForItemAtIndexPath:withLayoutAttributes:applyAttributes:isFocused:notify:], /BuildRoot/Library/Caches/com.I append my relevant code snippet here:

func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return games.

Python - dictionary assertion failure

When i print the type of my object i get the following


<class 'dict'>

but when i try to make the following asserting it fails

assert type(rankings[0]) is dict , "not a dictionary"

AssertionError Traceback (most recent call last)
in ()
30 print(type(rankings[0]))
---> 31 assert type(rankings[0]) is dict , "not a dictionary"

AssertionError: not a dictionary

Any help would be much appreciated

To check if rankings[0] is an instance of dict you should use:

isinstance(rankings[0], dict)

That way you also catch subclasses of dict.Not sure why 'is dict' isn't working for you.

Hibernate Table not found, MappingException and AssertionException

I tried to map an existing Postgresql Database with Hibernate and it already worked while I didn't add Inheritances per Subclass to Hibernate

This is the superclass

@Table(name = "place", schema = "public", catalog = "dbp")
@Inheritance(strategy = InheritanceType.AssertionFailure <init>
ERROR: HHH000099: an assertion failure occurred (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.

Eclipse RCP Development - Slowness during debug

814 java[5621:1677726] IMKClient Stall detected, *please Report* your user scenario attaching a spindump (or sysdiagnose) that captures the problem - (imkxpc_presentFunctionRowItemTextInputViewWithEndpoint:reply:) block performed very slowly (19.817 java[5621:1677726] *** Assertion failure in -[NSRemoteView informAuxServiceOfSelf], /Library/Caches/com.

JUnit Eclipse Oxygen - Display stack trace on test failure?

Is there a way to have eclipse show junit assertion errors (or more generally unhandled exceptions during testing for that matter) automatically without me going to the junit window, selecting the failed test, clicking the corresponding line on the right side, and then clicking the corresponding button each single time?This is ludicrous.

NSAttributedString crash when converting HTML to Attrubuted String

In the console it says:
Assertion failure in void _prepareForCAFlush(UIApplication *__strong)()

The function is called in an extension String.00pt";
NSKern = 0;
NSParagraphStyle = "Alignment 4, LineSpacing 0, ParagraphSpacing 15, ParagraphSpacingBefore 0, HeadIndent 0, TailIndent 0, FirstLineHeadIndent 0, LineHeight 19/0, LineHeightMultiple 0, LineBreakMode 0, Tabs (\n), DefaultTabInterval 36, Blocks (\n), Lists (\n), BaseWritingDirection 0, HyphenationFactor 0, TighteningForTruncation NO, HeaderLevel 0";
NSStrokeColor = "kCGColorSpaceModelRGB 0 0 0 1 ";
NSStrokeWidth = 0;

The string exists in a label, that is displayed in a UITableViewCell.

UICollectionView Assertion failure in createPreparedCellForItemAtIndexPath

my code is simple,just want to create a flow layout UIColloctionView

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return 7;

- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell = [UICollectionViewCell new];
return cell;

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return CGSizeMake(SCREEN_WIDTH / 2 - 5, 160);

and this is the error

*** Assertion failure in -[UICollectionView _createPreparedCellForItemAtIndexPath:withLayoutAttributes:applyAttributes:isFocused:notify:],