Refactoring Ruby with Monads
summary
Claims that monads are practical in Ruby and shows concrete refactorings: replace nil-check pyramids, flatten nested collections, and sequence asynchronous callbacks. Implements decorator classes Optional, Many, Eventually with operations and_then and from_value plus within that chain safely; examples traverse models, aggregate words from comments, and call the GitHub API, and the patterns run end to end. Code appears packaged as a gem and published on GitHub.
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chapters (6)
- 0:00Start
- 0:48ANALOGIES
- 15:50MULTIPLE RESULTS
- 18:33ASYNCHRONOUS CODE
- 24:15ABSTRACT DATA TYPE
- 25:56COMMON INTERFACE
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