On 1/27/22 8:13 AM, Steven Schveighoffer wrote:
On Thursday, 27 January 2022 at 12:45:20 UTC, frame wrote:
Is the order of fields guaranteed returned by `.tupleof` and
`__traits(getMember,...)`, can I rely on this? I know that are
different things, I mean just per each use case if I have more
functions that traverses through all fields. Thx.
Not for classes. The compiler is free to reorder if it wants to.
Yes for structs.
To clarify, the compiler can reorder the members to fit them better. But
it will be the same order for any particular build of the object files.
Any compile-time features that fetch the members should be in the same
order as the compiler has decided to lay them out. It's just that it
might not match the source code order.
-Steve
