CODEWITHSUNDEEP
swiftuitableviewnsmutablearray
NNikN
NNikN

Reputation: 3850

Swift UITableView numberOfRowsInSection with ternary operator

The following controller has numberOfRowsInSection: ofUITableViewDataSource.

class CityList: UIViewController,UITableViewDataSource,UITableViewDelegate {

  weak var cityListArray:NSMutableArray? = nil

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.cityListArray?.count
}
}

return self.cityListArray?.count shows Value of optional type int? not unwrapped did you mean to use '!' or "?"

How can I use ternary operator here, to return 0 if the array was empty?

Objective-C had default value returned 0, if the object is nil.

Upvotes: 0

Views: 656

Answers (1)

NNikN
NNikN

Reputation: 3850

There are two answers for this. One is already mentioned in the comments of the question.

return self.cityListArray?.count ?? 0

Which seems to be a shorter than the one which uses a ternary operator, mentioned below.

  return (self.cityListArray != nil) ? self.cityListArray!.count : 0

Upvotes: 1

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