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kotlinlang

<@U0BAA9MD5>: Only `lateinit val`, not `lateinit var`. From the blog: "With the help of our users we found that we have previously missed an unpleasant hole in the design of lateinit val: backing fields for such properties were not final, and thus Java code could modify them freely. That makes the val-ness of such properties vanish, because no code can ever assume any immutability on them, so we decided to take this feature back: from now on, only vars can be marked lateinit. We’ll keep thinking on use cases and improvements of this feature."