Fixed-size arrays

[lithdew]

Is your feature request related to a problem? Please describe.

Yes, I was hoping to remove the overhead of having to prefix a length to an array of bytes that I know is of a fixed length ahead of time. Fields that effectively denote a fixed-size array of arbitrary types are very common. Some examples of such fields would be 256-bit hashes, 16-byte UUIDs, 128-bit bitstrings, etc.

Describe the solution you'd like

A way to denote a field to be a fixed-sized array of some type. The schema syntax could be as simple as [N]T where N is the fixed number of elements stored in the array, and T is the type of the elements of the array.

Describe alternatives you've considered

Using variable-length arrays, which as mentioned incurs an unnecessary size overhead for the type of data concerned.

[andrewmd5]

To provide an update this is going through internal discussions now to identify if we promote it to a feature.