egonSchiele/contracts.ruby

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1457 stars · 82 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

contracts.ruby is a Ruby library for design-by-contract programming, letting you declare one-line contracts above methods that validate arguments and return values. It replaces boilerplate defensive code with clear, declarative checks and detailed contract-violation errors.

Use cases

• validate method arguments and return values in Ruby
• replace defensive boilerplate code with declarative contracts
• get detailed error messages when a method receives wrong types
• add runtime type checking to Ruby classes
• enforce preconditions and postconditions on Ruby methods

When to choose

• you want design-by-contract style validation in Ruby
• you want to cut down on manual argument-checking boilerplate
• you're on Ruby 3.x and want lightweight runtime contracts

When to avoid

• you need static type checking rather than runtime validation
• you're on Ruby 2.x and can't use the 0.16.x line
• the project needs an actively maintained library - it is seeking a new maintainer

Facets

library · maturity maintenance

testing error-handling type-system developer-tools programming-languages ruby design-by-contract contracts runtime-validation assertions

Member repositories

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markdown · JSON · MCP: product_card(name="egonSchiele/contracts.ruby")