once_cell
Single assignment cells and lazy values.
- Latest version1.21.4
- Total downloads1.5B
- Downloads (90 days)368.8M
#32Rank now –
#32Peak rank
4Days on list
366Score · 7d
Nov 5, 2026First seen
Rank · 7 days
About once_cell
Single assignment cells and lazy values.
- Latest version
- 1.21.4
- Total downloads
- 1.5B
- Downloads (90 days)
- 368.8M
- Repository
- github.com/matklad/once_cell
- Created
- 2018-08-02
Details from crates.io ↗.
Trending history
once_cell was first seen on crates.io · Most downloaded (90 days) on Nov 5, 2026. Since then it has appeared in 13 checks on 4 different days. Its best position was #32 of 50, reached on Nov 5, 10:08 UTC. It is #32 right now, holding steady at #32 over the last 6 checks.
Rank history
Position on crates.io · Most downloaded (90 days) at every check (lower is better).
Last 14 days
Best rank per day (UTC).
32
32
32
32
Oct 26today
Metric history
downloads as reported by crates.io.
Featured in
Archived daily, weekly and monthly lists that include this entry.
Questions
Is once_cell trending on crates.io Top Crates right now?
Yes. As of Nov 8, 10:08 UTC it is #32, holding steady at #32 over the last 6 checks.
What is the highest rank once_cell reached?
#32 on crates.io · Most downloaded (90 days), on Nov 5, 10:08 UTC. Trendoday checks this list every 360 minutes.
How long has once_cell been trending?
It was first seen on Nov 5, 2026 and has been on the list on 4 days (13 checks) since.