By Eric Weinstein
The Ruby programming language is ideal for rookies: effortless to profit, robust, and enjoyable to take advantage of! yet would it be extra enjoyable in the event you have been studying with the aid of a few wizards and dragons?
Ruby Wizardry is a playful, illustrated story that might train you the way to software in Ruby through taking you on a fantastical trip. As you stick to the adventures of younger heroes Ruben and Scarlet, you are going to study actual programming abilities, like how to:
- Use primary innovations like variables, symbols, arrays, and strings
- Work with Ruby hashes to create a programmable breakfast menu
- Control application movement with loops and conditionals to aid the Royal Plumber
- Test your wild and loopy principles in IRB and store your courses as scripts
- Create a category of mini-wizards, each one with their very own superpower!
- Organize and reuse your code with equipment and lists
- Write your individual impressive interactive tales utilizing Ruby
Along the best way, you are going to meet colourful characters from round the country, just like the hacker Queen, the Off-White Knight, and Wherefore the minstrel. Ruby Wizardry could have you (or your little wizard) addicted to programming in no time.
For a long time 10+ (and their parents!)
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Additional info for Ruby Wizardry: An Introduction to Programming for Kids
109 Defining your personal equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 go back as opposed to places . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred and fifteen figuring out process Arguments . . . . . . . . . . . . . . . . . . . . . . . . 117 xii Contents intimately What Is nil? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred and twenty Splat Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Block tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Into the Dagron’s Lair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 you recognize This! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred thirty eight every thing Is an item (Almost) 133 the topic of Our tale Is an item . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 periods and items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 growing Our top notch, Minstrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred and forty Variable Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred and forty four those Variable blunders Will surprise and Surprise You! . . . . . . . . . . one hundred forty five international Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 type Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 example Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . one hundred fifty neighborhood Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 items and self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 tools and example Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Dial-a-Ballad, or the Minstrel’s supply provider . . . . . . . . . . . . . . . . . . . 164 you recognize This! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 gadgets and sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Variables and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a hundred and seventy Object-Oriented Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 nine Inheriting the Magic of Ruby 177 Her Majesty’s Menagerie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 A Brush-up on sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 a number of sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Inheritance and DRY Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Subclass and Superclass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Overriding equipment: Pirates are humans, Too . . . . . . . . . . . . . . . . . a hundred ninety utilizing large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 retaining the dominion with GuardDogs and FlyingMonkeys . . . . . . . . 193 each GuardDog Has His Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 once again, with Feeling! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 The Queen’s computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 you recognize This! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 Contents in Detail xiii 10 A Horse of a unique colour 207 Utter Panda-monium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 developing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Extending Your wisdom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214 Mixins and Inheritance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Requiring one other dossier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 taking a look Up Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 A Horse of a distinct colour .