Swift Sublime and Ridiculous
The sublime moment in Swift programming for the iPad came the other day. I had a custom layout which toggled between different cell sizes. I triggered it by calling invalidateLayout. That worked, but I wanted it animated. It was literally one line of code:
self.collectionView!.performBatchUpdates({
self.collectionViewLayout!.invalidateLayout()
}, completion: nil)
I played with it for hours. If I can work out how to grab a movie from the screen, I will put it on Youtube so you can see the glory!
The ridiculous moment came about five minutes later. I wanted to split a string on a colon. Here's how you do it:
var r = str.rangeOfString( ":")
if r != nil
{
str2 = str.substringFromIndex( advance(r!.startIndex, 1 ) )
str1 = str.substringToIndex(r!.startIndex)
}
Really? OK, so I can use the split function, but there will be times when I want the substring approach, and that approach is too darn obscure.
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