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arraysinitializationswift

How to initialize all members of an array to the same value in Swift?

I have a large array in Swift. I want to initialize all members to the same value (i.e. it could be zero or some other value). What would be the best approach?

Solution

  • Actually, it's quite simple with Swift. As mentioned in the Apple's doc, you can initialize an array with the same repeated value like this:

    With old Swift version:

    var threeDoubles = [Double](count: 3, repeatedValue: 0.0)

    Since Swift 3.0:

    var threeDoubles = [Double](repeating: 0.0, count: 3)

    which would give:

    [0.0, 0.0, 0.0]