can I safely increase an array in this way, withou...

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[elect]

can I safely increase an array in this way, without an intermediary temporary variable?

ptrId = Array(newBufLength) { i -> ptrId.getOrElse(i) { i } }

[Dominaezzz]

Safely? It shouldn't throw if that's what you're asking. There are dedicated functions for this iirc. copyOf .

[elect]

I mean, can I assign directly to ptrId by reading it in the init fun?

[Dominaezzz]

Oh. Yes, the right side is evaluated before the assignment.