A Go library for declarative pattern matching with built-in patterns for slices, strings, ints, maps, and structs.
Go-Pattern-Match is a library that implements pattern matching for Go, allowing developers to write declarative control flow by matching values against patterns. It solves the problem of verbose conditional logic by providing a concise, expressive alternative to nested if/switch statements.
Go developers building applications with complex conditional logic, especially those familiar with pattern matching from functional languages or looking to reduce boilerplate in their code.
It offers a clean, type-safe API with built-in patterns for common types, extensibility for custom logic, and inspiration from mature libraries like ts-pattern, making it a practical choice for bringing functional programming patterns to Go.
Pattern Matching library for go
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Enables concise, readable code by matching values against patterns instead of nested conditionals, as shown in examples like `WithValues` that reduce boilerplate.
Includes patterns for strings, ints, slices, maps, and structs with chainable methods such as `StartsWith`, `Contains`, and `Head`, providing extensive out-of-the-box functionality.
Supports custom patterns via the `Patterner` interface and `When` for arbitrary predicates, allowing users to tailor matching logic to specific needs.
Leverages Go generics to ensure type-safe matching and handler functions, preventing runtime type errors and enhancing code reliability.
The README admits that Int Pattern, Map Pattern, and Struct Pattern are 'To be documented,' leaving users without guidance for key features and potentially hindering adoption.
As a newer library, it lacks the community contributions, extensive examples, and integration tools found in more established Go packages, which could slow down troubleshooting.
The abstraction layers in pattern matching may introduce runtime costs compared to direct if/switch statements, a concern for high-performance or latency-sensitive applications.