I suggest to take a look at the topics "Variadics as an Attribute" and "array
splatting for variadic parameters" and
https://github.com/Haravikk/swift-evolution/blob/a13dc03d6a8c76b25a30710d70cbadc1eb31b3cd/proposals/nnnn-variadics-as-attribute.md
<https://github.com/Haravikk/swift-evolution/blob/a13dc03d6a8c76b25a30710d70cbadc1eb31b3cd/proposals/nnnn-variadics-as-attribute.md>.
This is basically the other way round (arrays would accept variadic arguments),
but it has the same effect — and more:
You get rid of the odd "…" type, and it's also possible to use this with types
besides array (set, iterator….)
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