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arrayvec

v0.7.6 Growing

A vector with fixed capacity, backed by an array (it can be stored on the stack too). Implements fixed capacity ArrayVec and ArrayString.

MIT OR Apache-2.0 Edition 2018 MSRV 1.51
Data structuresNo standard library #data-structure#vector#array#stack#no_std

Quick Verdict

  • โœ•Not updated for 1+ year
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (16.9K crates depend on it)
  • โœ“Team maintained (2 owners)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
410.8M
Dependents
16.9K
Releases
55
Size
31KB

Deep Insights

๐Ÿ“Š
Steady growth

27.0M downloads in the last 30 days (901.0K/day), up 17% from the previous period.

๐Ÿ›๏ธ
Foundational crate

16.9K crates depend on arrayvec โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

๐Ÿ‘ฅ
Team maintained

This crate is maintained by a team (2 owners), reducing bus-factor risk and ensuring continuity.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 11+ years old, arrayvec hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿ“
Compact crate

At 31KB, arrayvec is lightweight. Small crate size correlates with focused, well-scoped functionality.

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Used by top crates

Notable dependents include anstyle-parse, icu_normalizer, schemars, csv-core, aead. When high-quality crates choose arrayvec, it's a strong quality signal.

Health Breakdown

Maintenance 6/25

Recency, release consistency, active ratio

Quality 16/25

Yanked ratio, deps, size, maturity, features

Community 20/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 14/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
812K/day avg+16%
0500K1.0M2/263/164/34/215/95/26

Top Dependents

Version Adoption

v0.7.6
51%
v0.5.2
20%
v0.7.4
18%
v0.7.2
10%
v0.7.1
2%

Release Timeline

10 releasessince 2020
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2020
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2021
5
2022
2023
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2
2025
2026
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Feature Flags

default =["std"]

std*

README

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Maintainers

Dependencies
6
direct dependencies
Dependents
16.9K
crates depend on arrayvec

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