rustio rustio.net
67

former

v2.42.0 Stable

A flexible implementation of the Builder pattern supporting nested builders and collection-specific subformers. Simplify the construction of complex objects.

MIT Edition 2021
Development toolsAlgorithms #fundamental#general-purpose#builder-pattern

Quick Verdict

  • โœ“Actively maintained (updated 61d ago)
  • โœ“Stable API (2.x for 4+ years)
  • โœ“Trusted by 222 crates
  • โœ“Permissive license (MIT)

Security

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Downloads
207.3K
Dependents
222
Releases
70
Size
291KB

Deep Insights

๐Ÿ“Š
Stable downloads

1.9K downloads in the last 30 days (64/day). Volume is roughly flat compared to the previous period.

๐Ÿ”—
Moderate adoption

222 crates depend on former. Reasonable ecosystem adoption, though not yet a core dependency.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 139 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 4+ years

The API has been stable (1.x) for over 4 years with 70 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐ŸŒŸ
Used by top crates

Notable dependents include woptions, woptions_runtime, wca, willbe, process_tools. When high-quality crates choose former, it's a strong quality signal.

Health Breakdown

Maintenance 15/25

Recency, release consistency, active ratio

Quality 21/25

Yanked ratio, deps, size, maturity, features

Community 12/20

Reverse deps, ownership, ecosystem

Popularity 6/15

Downloads, momentum, growth trend

Documentation 13/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
65/day avg-5%
05010015020012/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.1.12
55%
v0.1.11
24%
v0.13.0
13%
v2.8.0
5%
v2.9.0
3%

Release Timeline

70 releasessince 2021
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2021
6
2022
5
2023
1
2024
27
2025
29
2026
2
Less
More

Feature Flags

default =["enabled", "derive_former", "types_former"]

fullno_stdenabled*use_allocbenchmarksperformancetypes_former*derive_former*former_diagnostics_print_generated

README

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Maintainers

Dependencies
6
direct dependencies
Dependents
222
crates depend on former

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