rustio rustio.net
51

extfn

v0.1.3 Experimental

Call any freestanding function as `a.foo(b)` instead of `foo(a, b)` just by adding `#[extfn]` and renaming the first parameter to `self`.

MIT OR Apache-2.0 Edition 2021 MSRV 1.72
Rust patterns #macro#trait#extension#extension-functions

Quick Verdict

  • !Pre-1.0: API may have breaking changes
  • โœ“Tiny footprint (10KB, 3 deps)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
7.6K
Dependents
3
Releases
4
Size
10KB

Deep Insights

๐Ÿ“Š
Steady growth

91 downloads in the last 30 days (3/day), up 8% from the previous period.

๐Ÿชถ
Minimal dependencies

Only 3 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

๐Ÿ“
Compact crate

At 10KB, extfn is lightweight. Small crate size correlates with focused, well-scoped functionality.

Health Breakdown

Maintenance 10/25

Recency, release consistency, active ratio

Quality 14/25

Yanked ratio, deps, size, maturity, features

Community 7/20

Reverse deps, ownership, ecosystem

Popularity 5/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
8/day avg-90%
05010015012/291/162/32/213/113/28

Top Dependents

Most downloaded crates that depend on extfn

Version Adoption

v0.1.3
72%
v0.1.1
17%
v0.1.2
5%
v0.1.0
5%

Release Timeline

4 releasessince 2025
J
F
M
A
M
J
J
A
S
O
N
D
2025
4
2026
Less
More

README

Loading README...

Maintainers

Dependencies
3
direct dependencies
Dependents
3
crates depend on extfn

Similar Crates