IMO there are enough use cases where the growing feature is unneeded and it's overhead is unwanted, that the best compromise is to have both a raw fixed-size array type (i.e. an R7RS-small vector), _and_ a higher level self-resizing array. It is not hard to write a self-resizing array on top of a fixed-size array. That's what e.g. C++ and Java do.

Best regards,
Kevin Wortman

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