Optics By Example: Functional lenses in Haskell
by: Chris Penner
Released: 2020
Pages: 420
Language 语言: English
Pages: PDF
Size: 10 Mb
Book Description
A comprehensive example-driven guide to optics. Examples in Haskell,but adaptable to other languages.
Become a data-manipulation wizard using optics to manipulate data!
This book takes you from beginner to advanced using Lenses,Traversals,Prisms,and more!
Optics By Example is a one-stop comprehensive guide to mastering optics in functional programming languages. It covers everything you need to know to go from complete beginner to advanced. Each topic is accompanied by: copious examples and exercises!
See the Sample for a complete list of chapters,but here are some highlights:
Complete introductions to Lenses,Folds,Traversals,Prisms and Isos
Learn the magic of Indexed optics
Composing Optics
Lenses & Records
Fixing “The Record Problem”
Application design techniques using Classy optics
Breakdowns of laws and limitations for each optic type
Virtual lenses
Validation lenses
A guide to fully polymorphic optics
A guide to “operator-style”
Learn to query,filter,and aggregate data with surgical precision
Learn how to use higher-order optics effectively
Learn to write custom versions of all optics types for your own applications
Manipulate data types with a clean and consistent interface
Learn the monadic DSLs for using lenses in real monad stacks
WHY OPTICS?
Optics have become a wonderful and powerful new way of working with immutable data structures. They’re almost a necessity at this point; and the benefits they bring in terms of re-usability,simplification of code maintenance & refactoring,and expressivity are immense! However,learning to use optics can be tricky or even intimidating at first,it’s not always clear how to build up a large complicated mutation or query from the building blocks of optics. Optics by: example is here to help!
This book is great as a first guide to optics,as a reference guide for discovering and mastering the optics you need for day-to-day problems,and as a springboard into new ideas and tools which you may not have even heard of.
