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Pad a number with leading zeros in JavaScript [duplicate]

... @Pointy allocating space is implementation detail that is invisible to the programmer (no implementations that are open and I'm aware of do that (Rhino, V8, SM, JSC) any implementation that allocates memory and exposes the properties...
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Limit file format when using ?

...MIME-type using both the file extension and its binary signature (ASP.NET, PHP, Ruby, Java). You might also want to refer to these tables for file types and their magic numbers, to perform a more robust server-side verification. Here are three good reads on file-uploads and security. EDIT: Maybe fi...
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UICollectionView spacing margins

...or UICollectionViewFlowLayout *aFlowLayout = [[UICollectionViewFlowLayout alloc] init]; [aFlowLayout setSectionInset:UIEdgeInsetsMake(top, left, bottom, right)]; Updated for Swift 5 func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, inset...
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How to display a confirmation dialog when clicking an link?

...e the confirm() function in an inline onclick handler. <a href="delete.php?id=22" onclick="return confirm('Are you sure?')">Link</a> Advanced event handling But normally you would like to separate your HTML and Javascript, so I suggest you don't use inline event handlers, but put a c...
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Is passing 'this' in a method call accepted practice in java

...uctor "initializer". Within Java constructor, the object has actually been allocated memory, this the object actually has already existed/constructed within the constructor. – Lie Ryan Jul 3 '13 at 21:15 ...
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Changing Font Size For UITableView Section Headers

...wForHeaderInSection:(NSInteger)section { UILabel *myLabel = [[UILabel alloc] init]; myLabel.frame = CGRectMake(20, 8, 320, 20); myLabel.font = [UIFont boldSystemFontOfSize:18]; myLabel.text = [self tableView:tableView titleForHeaderInSection:section]; UIView *headerView = [[UIV...
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Prevent RequireJS from Caching Required Scripts

...r from build agent --> <replace file="${website.dir}/js/main.js" token="@Revision@" value="${buildNumber}" /> </target> Where the beginning of main.js looks like: require.config({ baseUrl: '/js', urlArgs: 'bust=@Revision@', ... }); ...
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How do you manage databases in development, test, and production?

...on is readable also at http://martinfowler.com/articles/evodb.html In one PHP+MySQL project I've had the database revision number stored in the database, and when the program connects to the database, it will first check the revision. If the program requires a different revision, it will open a pag...
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The model used to open the store is incompatible with the one used to create the store

..."MyApp.sqlite"]; NSMutableDictionary *options = [[NSMutableDictionary alloc] init]; [options setObject:[NSNumber numberWithBool:YES] forKey:NSMigratePersistentStoresAutomaticallyOption]; [options setObject:[NSNumber numberWithBool:YES] forKey:NSInferMappingModelAutomaticallyOption]; ...
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Request failed: unacceptable content-type: text/html using AFNetworking 2.0

... For PHP it's as easy as adding this to the page: header("Content-Type: application/json"); (unless it's not a JSON response, then XML or something) – rckehoe Dec 6 '13 at 15:02 ...