CODEWITHSUNDEEP
iosswiftlldb
Ziewvater
Ziewvater

Reputation: 1423

Implementing debugDescription for DebugPrintable in Swift

I'm trying to write my own debug description for a Swift class. My code looks like the following:

class SceneData : DebugPrintable {
    var fileName : String
    var scene : Scene
    var uuid : String

    var debugDescription: String = {
        return String(format: "<SceneData: {\n  fileName: %s\n  scene: %@\n}>", fileName, scene)
    }
    /*
     * More methods, etc.
     */
}

I'm getting the error 'SceneData.Type' does not have a member named 'fileName', but SceneData very clearly does have a variable fileName declared above. I'm also having similar issues when trying to use self within the string, and believe that this is related.

How can I make references to instance variables/self in the debugDescription string properly? I am pretty sure it is possible, both because other people have said it is, and because it seems ridiculous to have an object's debug description not have any actual specifics about itself. What am I doing wrong here?

Upvotes: 1

Views: 2492

Answers (1)

nRewik
nRewik

Reputation: 9148

remove =, because it should be a computed property. 

var debugDescription: String{
        return String(format: "<SceneData: {\n  fileName: %s\n  scene: %@\n}>", fileName, scene)
}

Upvotes: 2

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