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ctor

v1.0.8 Stable

Global, no_std-compatible constructors for all platforms that run before main (like C/C++ __attribute__((constructor)))

Apache-2.0 OR MIT Edition 2021 MSRV 1.60

Quick Verdict

  • โœ“Actively maintained (updated 8d ago)
  • โœ“Stable API (1.x for 7+ years)
  • โœ“Massive adoption (15.7K crates depend on it)
  • โœ“Permissive license (Apache-2.0 OR MIT)

Security

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Downloads
156.1M
Dependents
15.7K
Releases
74
Size
49KB

Deep Insights

๐Ÿ“Š
Steady growth

13.2M downloads in the last 30 days (439.5K/day), up 1% from the previous period.

๐Ÿ›๏ธ
Foundational crate

15.7K crates depend on ctor โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 51 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 7+ years

The API has been stable (1.x) for over 7 years with 74 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐Ÿ“
Compact crate

At 48KB, ctor is lightweight. Small crate size correlates with focused, well-scoped functionality.

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Used by top crates

Notable dependents include napi, napi-derive, datafusion, datafusion-expr, datafusion-optimizer. When high-quality crates choose ctor, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 18/25

Yanked ratio, deps, size, maturity, features

Community 13/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
369K/day avg-35%
0200K400K600K4/265/146/16/197/77/24

Top Dependents

Version Adoption

v1.0.7
43%
v1.0.6
33%
v1.0.5
17%
v1.0.8
5%
v1.0.3
2%

Release Timeline

10 releasessince 2026
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Feature Flags

default =["std", "proc_macro", "priority"]

std*priority*proc_macro*

README

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Maintainers

Dependencies
7
direct dependencies
Dependents
15.7K
crates depend on ctor