Precondition failed

Question

Jamie13 OP

Created Oct ’22

Replies 1

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Good day, I get an error “precondition failed” in this struct, what does this mean and how can I solve it?

struct Item: Identifiable {
    
    // Make sure this ID is unique.
    var id: String {
        date
    }
    
    var date: String
    var interval: String
    var duration: String
    var time: String
}

Thank You

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Answer 1

Claude31 OP

Oct ’22

Where do you get the error precisely ? When you create item ? Elsewhere ?

You want id to be unique of course.

You'd better use:

    let id = UUID()

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