A Swift µframework providing essential functional programming utilities like composition, currying, and application operators.
Prelude is a Swift microframework that provides essential functional programming utilities like function composition operators, currying helpers, and application operators. It solves the problem of repeatedly implementing common functional patterns by offering them as reusable, type-safe building blocks.
Swift developers building functional or declarative codebases, particularly those working on frameworks or libraries that benefit from composable function transformations.
Developers choose Prelude for its minimal, focused set of utilities that enhance code expressiveness without bloat, leveraging Swift's strong type system to provide reliable functional programming tools.
Swift µframework of simple functional programming tools
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Operators >>> and <<< enable clear chaining of functions, as shown in the REPL example for readable data pipelines like `readLine >>> parseString >>> evaluateAST >>> toString`.
Forward application operator |> improves data flow clarity, making sequences like `100 |> toString |> count` more intuitive than nested function calls, especially with longer names.
Functions like curry and flip facilitate higher-order function creation, useful for partial applications and argument ordering, as demonstrated in map and reduce chains with `<|` and flip.
Focuses only on essential functional tools without custom types, keeping it lightweight and reusable across projects, as intended by the author to avoid reimplementation.
As stated in the README, it provides no new types or functions on custom types, restricting its utility to basic function transformations and missing data structure support.
Custom operators like &&& and >>> might confuse developers unfamiliar with functional programming, leading to code that is harder to maintain in mixed-skill teams.
Full API documentation is only in the source code, which can hinder quick onboarding and reference without diving into implementation details.