Muruganandham K Muruganandham K - 1 year ago 116
iOS Question

How to Nil a object in Swift

How to assign nil to an object in Swift. I'm getting error if assigned directly.

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Answer Source

From Apple Documentation:

nil cannot be used with nonoptional constants and variables. If a constant or variable in your code needs to work with the absence of a value under certain conditions, always declare it as an optional value of the appropriate type

also very importante to notice:

Swift’s nil is not the same as nil in Objective-C. In Objective-C, nil is a pointer to a nonexistent object. In Swift, nil is not a pointer—it is the absence of a value of a certain type. Optionals of any type can be set to nil, not just object types

I hope that helps you!


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