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UICollectionView's cellForItemAtIndexPath is not being called

... is the answer solved my problem! The override method func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { <#code#> } does not work for me. – Mike ...
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How Do I Take a Screen Shot of a UIView?

...a category method on UIView to get the view as an UIImage: - (UIImage *)pb_takeSnapshot { UIGraphicsBeginImageContextWithOptions(self.bounds.size, NO, [UIScreen mainScreen].scale); [self drawViewHierarchyInRect:self.bounds afterScreenUpdates:YES]; // old style [self.layer renderInCont...
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Switching to a TabBar tab view programmatically?

... Like Stuart Clark's solution but for Swift 3: func setTab<T>(_ myClass: T.Type) { var i: Int = 0 if let controllers = self.tabBarController?.viewControllers { for controller in controllers { if let nav = controller as? UINavigationController, nav.topViewCont...
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How do I force a UITextView to scroll to the top every time I change the text?

...this line in your UITextFielDelegate method. ` func textViewDidEndEditing(_ textView: UITextView) { textView.scrollRangeToVisible(NSRange(location: 0, length: 0)) } ` – lifewithelliott Mar 15 '17 at 6:11 ...
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Making a Simple Ajax call to controller in asp.net mvc

...er, it's Url.Action(actionName, controllerName) – xd6_ Apr 27 '17 at 22:20 1 Not a fan of this, i...
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Difference between and

...P script (checkout.php) that process the above form's action: <?php var_dump($_POST); ?> Test the above on your local machine by creating the two files in a folder named /tmp/test/ then running the built-in PHP web server from shell: php -S localhost:3000 -t /tmp/test/ Open your browser ...
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How to convert a string into double and vice versa?

...y default? [myNumFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4]; // next line is very important! [myNumFormatter setNumberStyle:NSNumberFormatterDecimalStyle]; // crucial NSNumber *tempNum = [myNumFormatter numberFromString:tempStr]; NSLog(@"string '%@' gives NSNumber '%@' with ...
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Is it valid to have a html form inside another html form?

...ide could look something like this if you use php: <?php if(isset($_POST['save'])) echo "Stored!"; else if(isset($_POST['delete'])) echo "Deleted!"; else echo "Action is missing!"; ?> ...
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How do I get a file name from a full path with PHP?

...cally ask for the filename. So pathinfo('/var/www/html/index.php', PATHINFO_FILENAME) should return 'index.php' PHP Pathinfo documentation – OnethingSimple Apr 19 '15 at 13:54 7 ...
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Remove CSS class from element with JavaScript (no jQuery) [duplicate]

...he latest version of most modern browsers: ELEMENT.classList.remove("CLASS_NAME"); remove.onclick = () => { const el = document.querySelector('#el'); if (el.classList.contains("red")) { el.classList.remove("red"); } } .red { background: red } <div id='el' class="r...