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Basics

Introduction

Ruby is a dynamic object-oriented language for web and scripting.

Installation

Ruby installation uses rbenv or RVM for version management.

Running Code

Ruby code runs via ruby command or IRB with .rb files.

Syntax

Ruby syntax uses minimal punctuation with a focus on readability.

Variables

Ruby variables use dynamic typing with local and instance scopes.

Data Types

Ruby data types include String Integer and Symbol with dynamic typing.

Constants

Ruby constants use uppercase for semi-immutable values.

Operators

Ruby operators include arithmetic and spaceship operator.

If Else

Ruby if-else statements control flow with concise syntax.

Case

Ruby case expressions handle conditions with when clauses.

Loops

Ruby loops use while and each with break and next.

Comments

Ruby comments use # or =begin/=end for documentation.

Errors

Ruby errors use begin-rescue with typed exceptions.

Debugging

Ruby debugging uses puts and pry for interactive tracing.

Best Practices

Ruby best practices include readable code, minimal metaprogramming.

Security Basics

Ruby security ensures safe input handling for web apps.

Modules

Ruby modules use module for namespacing and mixins.

Gems

Ruby gems are managed with Gemfile and Bundler.

puts

Ruby puts outputs to console with string interpolation.

Methods

Ruby methods use def with optional parameters.

Blocks

Ruby blocks use do-end or {} for inline logic.

Procs

Ruby Procs create callable objects with lambda-like behavior.

Lambdas

Ruby lambdas enforce strict argument counts with lambda.

Yield

Ruby yield passes control to blocks in methods.

Method Arguments

Ruby method arguments include defaults and splats.

Closures

Ruby closures capture variables for stateful functions.

Classes

Ruby classes use class with instance variables and methods.

Inheritance

Ruby inheritance uses < for single inheritance.

Modules as Mixins

Ruby modules act as mixins with include and extend.

Structs

Ruby structs create lightweight classes with attributes.

Enums

Ruby enums use custom classes or gems for constants.

Instance Variables

Ruby instance variables use @ for object state.

Arrays

Ruby arrays are dynamic collections with methods like map.

Hashes

Ruby hashes store key-value pairs with symbol keys.

Sets

Ruby sets use Set class for unique elements.

Strings

Ruby strings are mutable, with methods like gsub.

Symbols

Ruby symbols are immutable identifiers for performance.

Threads

Ruby threads enable concurrency with Thread class.

Fibers

Ruby fibers provide lightweight cooperative concurrency.

Async

Ruby async uses gems like async for non-blocking I/O.

Mutex

Ruby mutex ensures thread-safe access with Mutex class.

File Reading

Ruby file reading uses File.read with error handling.

File Writing

Ruby file writing uses File.write with buffered streams.

File Paths

Ruby file paths use File.join for cross-platform handling.

File Deletion

Ruby file deletion uses File.delete with error checks.

HTTP Server

Ruby HTTP server uses Rails or Sinatra for web apps.

HTTP Client

Ruby HTTP client uses Net::HTTP or HTTParty for APIs.

HTTP Routing

Ruby HTTP routing uses Rails or Sinatra for endpoints.

JSON Handling

Ruby JSON handling uses JSON.parse for serialization.

JSON Parsing

Ruby JSON parsing uses JSON.parse with typed hashes.

JSON Serialization

Ruby JSON serialization uses JSON.generate with objects.

Rails

Ruby on Rails builds full-stack web apps with MVC.

Sinatra

Ruby Sinatra provides lightweight routing for REST APIs.

REST APIs

Ruby REST APIs use Rails or Sinatra with JSON responses.

GraphQL APIs

Ruby GraphQL APIs use graphql-ruby for typed queries.

WebSockets

Ruby WebSockets use ActionCable for real-time apps.

Authentication

Ruby authentication uses Devise or JWT for secure APIs.

Environment Variables

Ruby environment variables use ENV for configuration.

CORS

Ruby CORS enables cross-origin requests with middleware.

Active Record

Ruby Active Record maps database queries to objects in Rails.

PostgreSQL

Ruby PostgreSQL uses pg gem with Active Record.

SQLite

Ruby SQLite uses sqlite3 gem for local databases.

MongoDB

Ruby MongoDB uses mongoid for document data.

Database Transactions

Ruby database transactions use Active Record for atomicity.

Logging

Ruby logging uses Logger for structured log output.

Error Logging

Ruby error logging captures exceptions with Logger.

Request Logging

Ruby request logging tracks API calls with Rails middleware.

Testing

Ruby testing uses RSpec or Minitest with rake test.

Unit Testing

Ruby unit testing uses shoulda for assertions.

Integration Testing

Ruby integration testing validates APIs with HTTParty.

Mocking

Ruby mocking uses RSpec mocks for isolated tests.

Benchmarking

Ruby benchmarking uses Benchmark for performance tests.

REST API

Ruby REST API with Rails handles CRUD with JSON responses.

GraphQL API

Ruby GraphQL API with graphql-ruby supports typed queries.

Real-Time Chat

Ruby real-time chat uses ActionCable for WebSocket messaging.

Authentication API

Ruby authentication API uses Devise for secure endpoints.

Database CRUD

Ruby database CRUD with Active Record handles data operations.

Rails App

Ruby Rails app creates full-stack web UIs with MVC.

API Testing

Ruby API testing with RSpec validates REST endpoints.

Logging Setup

Ruby logging setup with Logger logs requests and errors.

Dockerized App

Ruby Dockerized app uses Dockerfile for deployment.

Active Record Query

Ruby Active Record query retrieves data with ARel.

Welcome to Ruby Resource - Your Gateway to Ruby Mastery!

Basics

Functions

Classes

Data Structures

Concurrency

File I/O

HTTP

JSON

Web Development

Databases

Logging

Testing

Examples