
Learn Ruby the Hard Way
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Zed Shaw has perfected the world's best system for learning Ruby. Follow it and you will succeed-just like the hundreds of thousands of beginners Zed has taught to date! You bring the discipline, commitment, and persistence; the author supplies everything else.
In Learn Ruby the Hard Way, Third Edition, you'll learn Ruby by working through 52 brilliantly crafted exercises. Read them. Type their code precisely. (No copying and pasting!) Fix your mistakes. Watch the programs run. As you do, you'll learn how software works; what good programs look like; how to read, write, and think about code; and how to find and fix your mistakes using tricks professional programmers use. Most importantly, you'll learn the following, which you need to start writing excellent Ruby software of your own:
* Installing your Ruby environment
* Organizing and writing code
* Ruby symbols and keywords
* Basic mathematics
* Variables and printing
* Strings and text
* Interacting with users
* Working with files
* Using and creating functions
* Looping and logic
* Arrays and elements
* Hashmaps
* Program design
* Object-oriented programming
* Inheritance and composition
* Modules, classes, and objects
* Project "skeleton" directories
* Debugging and automated testing
* Advanced user input
* Text processing
* Basic game development
* Basic web development
It'll Be Hard At First. But Soon, You'll Just Get It-And That Will Feel Great!
This tutorial will reward you for every minute you put into it. Soon, you'll know one of the world's most powerful, popular programming languages. You'll be a Ruby programmer.
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Acknowledgments
The Hard Way Is Easier
Exercise 0: The Setup
Exercise 1: A Good First Program
Exercise 2: Comments and Pound Characters
Exercise 3: Numbers and Math
Exercise 4: Variables and Names
Exercise 5: More Variables and Printing
Exercise 6: Strings and Text
Exercise 7: More Printing
Exercise 8: Printing, Printing
Exercise 9: Printing, Printing, Printing
Exercise 10: What Was That?
Exercise 11: Asking Questions
Exercise 12: Prompting People for Numbers
Exercise 13: Parameters, Unpacking, Variables
Exercise 14: Prompting and Passing
Exercise 15: Reading Files
Exercise 16: Reading and Writing Files
Exercise 17: More Files
Exercise 18: Names, Variables, Code, Functions
Exercise 19: Functions and Variables
Exercise 20: Functions and Files
Exercise 21: Functions Can Return Something
Exercise 22: What Do You Know So Far?
Exercise 23: Read Some Code
Exercise 24: More Practice
Exercise 25: Even More Practice
Exercise 26: Congratulations, Take a Test!
Exercise 27: Memorizing Logic
Exercise 28: Boolean Practice
Exercise 29: What If
Exercise 30: Else and If
Exercise 31: Making Decisions
Exercise 32: Loops and Arrays
Exercise 33: While Loops
Exercise 34: Accessing Elements of Arrays
Exercise 35: Branches and Functions
Exercise 36: Designing and Debugging
Exercise 37: Symbol Review
Exercise 38: Doing Things to Arrays
Exercise 39: Hashes, Oh Lovely Hashes
Exercise 40: Modules, Classes, and Objects
Exercise 41: Learning to Spe
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