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once_cell

v1.21.4crates.io· Rust

Single assignment cells and lazy values.

The verdict
Safe default. Widely trusted across the ecosystem, actively maintained.
Live from the crates.io registry · derived rules, not AI
How it scores
MaintenanceHealthy
PopularityTop 1%
SecurityClean
LicensePermissive
DepsZero deps
Maintenance
Last published 3 months ago.
Popularity
15M downloads / week
Security
No known advisories for this version (OSV).
License
Apache-2.0 OR MIT
Dependencies
No runtime dependencies
Recent releases
  • 1.21.43 months ago
  • 1.21.3over a year ago
  • 1.21.2over a year ago
  • 1.21.1over a year ago
  • 1.21.0over a year ago
  • 1.20.3over a year ago
  • 1.20.2over a year ago
  • 1.20.1over a year ago
once_cell — Single assignment cells and lazy values. (Rust / crates.io) — verdict, alternatives & security · Modules