Mastering Ruby Closures: A Guide to Blocks, Procs, and Lambdas

Cover
Table of Contents
Acknowledgements
Welcome!
	Why This Book?
	Who Is This Book For?
	How to Use This Book
	What\'s in This Book
	About Ruby Versions
	Where to Go for Help
1. Closing in on Closures
	The Foundations of a Closure
	Simulating Classes with Closures
	Implementing Callbacks in Ruby with Lambdas
	Implementing Enumerable#reduce (or Fold Left)
	Test Your Understanding!
	Wrapping Up
2. Beautiful Blocks
	Separating the General from the Specific
	Executing Blocks with the yield Keyword
	Blocks as Closures and Block Local Variables
	Block Pattern #1: Enumeration
	Block Pattern #2: Managing Resources
	Block Pattern #3: Beautiful Object Initialization
	Test Your Understanding!
	Wrapping Up
3. The Power of Procs and Lambdas
	Procs and the Four Ways of Calling Them
	Lambdas—Same, But Different
	How Symbol#to_proc Works
	Currying with Procs
	Test Your Understanding!
	Wrapping Up
4. Building Your Own Lazy Enumerables
	Understanding Lazy Enumerables
	Building Our Skeleton
	Implementing Lax
	Implementing Lazy map
	Implementing Lazy take
	Test Your Understanding!
	Wrapping Up
A1. Solutions
	Chapter 1
	Chapter 2
	Chapter 3
	Chapter 4
Bibliography