# pointfreeco/swift-overture

🎼 A library for function composition.

Repository: https://github.com/pointfreeco/swift-overture
Canonical: https://ross.abutalabs.com/products/swift-overture
Homepage: https://www.pointfree.co/episodes/ep11-composition-without-operators
Language: Swift
License: MIT
License Family: permissive
Topics: functional-programming, function-composition
Last push: 2024-07-05T17:46:54+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3068, "days_push": 789, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1151, forks 62 (observed 2026-08-28T04:03:46.787472+00:00)

## What it is
Overture is a Swift library for function composition, providing tools like pipe, with, update, curry, flip, and key-path helpers to build new functions from smaller pieces. It offers operator-free composition utilities popularized by the Point-Free video series.

## Use cases
- compose multiple functions into a single pipeline in Swift
- avoid nested closures when transforming values
- update and mutate structs functionally with key paths
- introduce functional composition without custom operators
- curry and flip function arguments for reuse

## When to choose
- you write Swift and want reusable, composable functions without custom operators
- you want lightweight functional utilities with no dependencies
- you follow Point-Free style functional Swift patterns

## When to avoid
- your team prefers imperative or object-oriented Swift idioms
- you need a full functional programming toolkit with monads and effect types
- the project is not in Swift

## Facets
- artifact type: library
- maturity: maintenance
- function: developer-tools
- domain: programming-languages, developer-tools
- platform: cross-platform
- tags: functional-programming, function-composition, swift-package, algorithms, swift, ios, macos

## Member repositories
- pointfreeco/swift-overture (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:46.787472+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:33:37.516872+00:00, confidence not recorded.
  - readme: https://github.com/pointfreeco/swift-overture (fetched 2026-08-28T04:03:46.787472+00:00, sha 378479a1c683)
  - homepage: https://www.pointfree.co/episodes/ep11-composition-without-operators (fetched 2026-08-29T12:38:22.099249+00:00, sha fad12f72bc32)
  - site_page: https://www.pointfree.co/about (fetched 2026-08-29T12:38:22.110729+00:00, sha c3a02fbfb680)
  - site_page: https://www.pointfree.co/pricing (fetched 2026-08-29T12:38:22.108479+00:00, sha 52429c23da6e)
- Data as of 2026-08-30T08:39:29.467469+00:00.