Depending on if the format you use is self-describing or not, it’s possible “sending a plain array” and “sending a struct with 1 field that is an array” could have the same format on the wire.
If it is self describing, the overhead could be very very minimal.
So, why would you want to send a plain array without wrapping it in a struct?
Comments
While I understand the sentiment, I 100% disagree on the 'never' qualifier.
Depending on if the format you use is self-describing or not, it’s possible “sending a plain array” and “sending a struct with 1 field that is an array” could have the same format on the wire.
If it is self describing, the overhead could be very very minimal.
So, why would you want to send a plain array without wrapping it in a struct?