The Well-Grounded Rubyist

My Notes (in progress)

• This is nowhere near 100% complete - this release merely shames me into finishing.

Contents:

1. Bootstrapping

   • installation, syntax, Ruby basics
   • Ruby anatomy
   • Ruby extensions & libraries
   • Ruby standard tools
     • ruby, irb, rdoc, ri, rake, gem, erb

2. Objects, Methods, Local Variables

   • talking to objects
   • creating an object
   • innate object behaviors
   • method arguments
   • local variables & assignments

3. Classes

   • classes & instances
   • instance variables & object state
   • setter methods
   • attributes
   • inheritance
   • classes as objects & message receivers
   • constants
   • nature vs nurture

4. Modules

   • intro
   • modules, classes & method lookup
   • method_missing
   • class & module design/naming

5. Self

   • intro
   • scope
   • method-access rules
   • top-level methods

6. Control Flow Techniques

   • conditional execution
   • loops
   • iterators & code blocks
   • error handling & exceptions

7. Essential Classes & Modules

   • literal constructors
   • syntactic sugar
   • bang methods and danger
   • conversion methods
   • boolean states & objects ... and nil
   • comparing two objects
   • inspecting object capabilities

8. Strings, Symbols, other Scalars

   • string basics
   • symbols
   • numbers
   • times & dates

9. Collections & Containers

   • arrays & hashes
   • collection handling with arrays
   • hashes
   • ranges
   • sets

10. Enumerables

    • each
    • boolean queries
    • searches & indexes
    • element-wise ops
    • additional ops
    • map, aka collect
    • strings as enumerables (sorta)
    • sorting
    • enumerators
    • enumerator semantics & use cases
    • method chaining
    • lazy enumerators

11. Regular Expressions

    • intro
    • writing
    • building a pattern
    • matching, substrings, MatchData
    • quantifiers, anchors, modifiers
    • string <=> regex conversions
    • common use cases

12. File I/O Operations (TODO)

    • IO class
    • basic file ops
    • IO and File queries
    • directories
    • file tools

13. Object Individualization

    • singletons
    • modifying core classes & modules
    • BasicObject

14. Callables & Runnables

    • procs
    • lambdas and ->
    • methods as objects
    • eval family of methods
    • threads
    • system commands from inside Ruby

15. Callbacks, Hooks, Runtime Introspection (TODO)

    • callbacks & hooks
    • interpreting object capability queries
    • introspection: variables & constants
    • tracing execution
    • callbacks & method inspection in practice

16. Functional Programming

    • pure functions
    • immutability
    • higher-order functions
    • recursion