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enum-map

v2.7.3 Growing

A map with C-like enum keys represented internally as an array

MIT OR Apache-2.0 Edition 2021 MSRV 1.61
Data structuresNo standard library #data-structure#enum#no_std

Quick Verdict

  • โœ•Not updated for 2+ years
  • โœ“Stable API (2.x for 8+ years)
  • โœ“Massive adoption (2.4K crates depend on it)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

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Downloads
32.0M
Dependents
2.4K
Releases
80
Size
22KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

2.6M downloads in the last 30 days (85.2K/day), up 22% from the previous period.

๐Ÿ”—
Widely adopted

2.4K crates depend on enum-map. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

enum-map has only 1 owner despite 2.4K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

โœ…
Stable for 8+ years

The API has been stable (1.x) for over 8 years with 80 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐Ÿ“
Compact crate

At 21KB, enum-map is lightweight. Small crate size correlates with focused, well-scoped functionality.

๐ŸŒŸ
Used by top crates

Notable dependents include egui_extras, whatlang, near-primitives-core, risc0-zkvm, risc0-circuit-rv32im. When high-quality crates choose enum-map, it's a strong quality signal.

Health Breakdown

Maintenance 7/25

Recency, release consistency, active ratio

Quality 18/25

Yanked ratio, deps, size, maturity, features

Community 15/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
68K/day avg+67%
050K100K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v2.7.3
69%
v2.5.0
22%
v0.6.6
4%
v2.1.0
2%
v2.4.2
2%

Release Timeline

80 releases2 yankedsince 2017
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2017
27
2018
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2019
4
2020
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2021
4
2022
13
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README

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Maintainers

Dependencies
7
direct dependencies
Dependents
2.4K
crates depend on enum-map

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