Facet (Rust reflection library)
Shares rank 5 of 8 Rust crates by recommenders
A Rust derive macro library that adds runtime type information and reflection to code. Critics say it has not delivered on its promise of faster compile times.
A Rust derive macro library that adds runtime type information and reflection to code. Critics say it has not delivered on its promise of faster compile times.
8 people gave an opinion
- recommend it
- 6
- criticize it
- 2
- approval share
- 75%
Recommended in 4 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 6 people recommend itNeeds 10 or more, not met.
- 3 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 4 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Good tooling for runtime type information
“It's great having tools like Facet around to add runtime type information in.”
Comment from 30 Sep 2026 in “Testing WebGPU data layouts with Facet” “WebGPU having good tools like Facet from the start is a huge win.”
Comment from 30 Sep 2026 in “Testing WebGPU data layouts with Facet” “where simpler tooling has been missing.”
Comment from 18 Feb 2026 on Hacker News
What people warn about
Each mark is one comment
Has not met its compile-speed goal
“Facet set out to compile faster, but AFAIK it never actually achieved that goal.”
Comment from 30 Sep 2026 in “Deser: Rethinking Rust Serialization” “facet hasn't quite realized its promise on those fronts”
Comment from 7 Oct 2026 in “Rust's derive often implies inline”
Other Rust crates people recommend
The four most recommended other Rust crates, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| anyhow (Rust crate) | 34 | 10 | 77% | 5 | — | Approved |
| Rayon | 18 | 2 | 90% | 10 | — | Approved |
| thiserror | 16 | 8 | 67% | 5 | — | Approved |
| rand crate | 9 | 3 | 75% | 4 | — | — |
| Facet (Rust reflection library)This page | 6 | 2 | 75% | 4 | — | — |
What people said
All 8 comments that mention it, newest first. Each links to the original comment.
“facet hasn't quite realized its promise on those fronts”
“Nice, always good to have some extra checking.”
“It's great having tools like Facet around to add runtime type information in.”
“WebGPU having good tools like Facet from the start is a huge win.”
“Facet set out to compile faster, but AFAIK it never actually achieved that goal.”
“There's a library implementation we can use right now though”
“where simpler tooling has been missing.”
“allows tagging fields as sensitive so they won't show up in logs”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.