Hi, Just came across this curiosity that IMO may help us to design physical types in the future.
Not sure if this was mentioned before, but it seems to me that `DaysMilliseconds` and `MonthDayNano` belong to a broader class of physical types "typed tuples" in that they are constructed by defining the tuple `(t_1,t_2,...,t_N)` where t_i (e.g. int32) is representable in memory for a given endianess, and each element of the array is written to the buffer back to back as `<t1 in endianess><t2 in endianess>...<tN in endianess>`. Primitive arrays such as e.g. `Int32Array` are the extreme case where the tuple has a single entry (t1,), which leads to `<int32 in endianess>`. The others are: * DaysMilliseconds = (int32, int32) * MonthDayNano = (int32, int32, int64) In principle, we could re-write the in-memory layout page in these terms that places all the types above in the same "bucket". Best, Jorge
