Topics

• Casting (type conversion)
• Classes
• Routing
• Control Flow
• Methods
• ActiveRecord Migrations
• Iteration
• Rails Best Practices
• Regular Expressions and Regex Based Operations
• Comparable
• Naming Conventions
• ActiveRecord Associations
• ActiveRecord Validations
• ActiveRecord Query Interface
• Comments
• Special Constants in Ruby
• Modules
• Ruby Version Manager
• Singleton Class
• Time
• Metaprogramming
• Keyword Arguments
• Truthiness
• Introspection
• Change gem source in Gemfile

Examples

• Casting to an Integer
• Casting to a Float
• Accessing instance variables with getters and setters
• Access Levels
• Constraints
• if, elsif, else and end
• Optional parameter(s) (splat operator)
• Rectangle comparable by area
• Map
• Iterating over complex objects
• has_one
• Custom validations
• Character classes
• Yielding to blocks
• Models class from Controller name
• Add a self reference
• A simple mixin with include
• Defining a Regexp
• Single & Multiple line comments
• __FILE__
• How to create gemset
• Joins
• Introduction
• Conditional validation
• Create an array column
• match? - Boolean Result
• Creating time objects
• View an object's Instance Variables
• Using keyword arguments
• Common quick usage
• Truthiness of a value can be used in if-else constructs
• You Ain’t Gonna Need it (YAGNI)
• Iteration with index
• Defining methods dynamically
• Make use of ref, branch, git for specific gem in gemfile