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smallvec

v1.15.2 Stable

'Small vector' optimization: store up to a small number of items on the stack

MIT OR Apache-2.0 Edition 2018
Data structures #vector#vec#stack#no_std#small

Quick Verdict

  • Actively maintained (updated 32d ago)
  • Stable API (1.x for 11+ years)
  • Massive adoption (63.8K crates depend on it)
  • Team maintained (3 owners)
  • Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
970.5M
Dependents
63.8K
Releases
77
Size
35KB

Deep Insights

📊
Steady growth

76.3M downloads in the last 30 days (2.5M/day), up 5% from the previous period.

🏛️
Foundational crate

63.8K crates depend on smallvec — it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

👤
Prolific maintainer

The primary maintainer publishes 117 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

Stable for 11+ years

The API has been stable (1.x) for over 11 years with 77 releases. This level of maturity means you can depend on it without worrying about breaking changes.

📐
Compact crate

At 34KB, smallvec is lightweight. Small crate size correlates with focused, well-scoped functionality.

⚠️
Notable yanked versions

26% of releases have been yanked. Check version history before pinning.

🌟
Used by top crates

Notable dependents include parking_lot_core, idna, hyper, ahash, tinyvec. When high-quality crates choose smallvec, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 17/25

Yanked ratio, deps, size, maturity, features

Community 19/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days
2.1M/day avg-36%
01.0M2.0M3.0M4/265/146/16/197/77/24

Top Dependents

Version Adoption

v1.15.1
76%
v1.15.0
10%
v1.14.0
8%
v1.15.2
5%
v2.0.0-alpha.12
1%

Release Timeline

10 releasessince 2024
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2024
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2025
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2026
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Feature Flags

unionwriteconst_newmay_dangledrain_filterimpl_bincodeconst_genericsspecializationdrain_keep_restdebugger_visualizer

README

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Maintainers

Dependencies
8
direct dependencies
Dependents
63.8K
crates depend on smallvec

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