Іван Лаврів "Transducers for ruby developers"
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Transducers allow for composable algorithmic transformations on collections in a way that is reusable and type-independent. In Clojure, transducers were introduced by Rich Hickey as a way to implement operations like map, filter, and reduce on collections. The transducers library for Ruby implements transducers, allowing Ruby developers to compose transducers like map, filter, and take to process collections in a more performant way, such as for text processing.
![Transducers and Ruby
require ‘transducers’
T = Transducers
t = T.compose(
T.filter(:even?),
T.map(|n| n * 2),
T.take(5))
result = T.transduce(t, :<<, [], 1..100)](https://image.slidesharecdn.com/transducersforrubydevelopers-151127095043-lva1-app6892/85/Transducers-for-ruby-developers-14-320.jpg)
Іван Лаврів "Transducers for ruby developers"
- 2. About Me Front - End Engineer temy.co Rust meetups co - organizer speeker Teacher for PLLUG Community twitter: @ilavriv github: lavriv92
- 3. History Presented by Rich Hickey Implemented on Clojure
- 5. What is transducers Composable algorithmic transformations
- 6. Concept of transducers All operations with collections can be implemented with redice function We don`t know nothing about types of collections We can compose results Collectiong results of computions
- 7. Function composition compose(collection, transformation1, transformation2, … , transformationN)
- 8. But! Results not reusable Different types of results
- 9. Signature (whatever, input -> whatever ) -> (whatever -> input -> whatever)
- 12. Why i can use transducers Text processing Operations for collections map, filter, reduce Needs better performance
- 14. Transducers and Ruby require ‘transducers’ T = Transducers t = T.compose( T.filter(:even?), T.map(|n| n * 2), T.take(5)) result = T.transduce(t, :<<, [], 1..100)
- 15. Ruby transducers-ruby by cognitech lab Github: https://github.com/cognitect-labs/transducers-ruby
- 17. Questions?