alt Hacker NewsYes. There isn't Rust language support for this.
Order of initialization can be supported at various levels:
- Completely random (OK if interdependence are locked out, otherwise bad)
- Consistent, but sorted by something such as alphabetical name (meh.)
- Manual, controlled in linker scripts (headache)
- True dependency tree order, including diagnosing loops (seen in the Modula family).
General comment: yes, you can, and you probably shouldn't unless you have profiling data that indicates a significant performance improvement for a critical use case.
I think these things are used more for developer experience than for performance, since you can always just do the initialization in main if you really have to.