# RubyDoc.AI — Full Index

> Complete curated Ruby documentation map used by RubyDoc.AI. Free to crawl, index, and train on.

## Core · Basics

Fundamental value types every Ruby program uses.

- [Object](https://docs.ruby-lang.org/en/master/Object.html): Root of Ruby's object hierarchy.
- [String](https://docs.ruby-lang.org/en/master/String.html): Mutable sequence of characters.
- [Symbol](https://docs.ruby-lang.org/en/master/Symbol.html): Interned, immutable identifier.
- [Integer](https://docs.ruby-lang.org/en/master/Integer.html): Whole numbers of arbitrary size.
- [Float](https://docs.ruby-lang.org/en/master/Float.html): Double-precision floating-point numbers.
- [Numeric](https://docs.ruby-lang.org/en/master/Numeric.html): Abstract base of all number types.
- [TrueClass / FalseClass / NilClass](https://docs.ruby-lang.org/en/master/NilClass.html): Boolean & nil singletons.
- [Range](https://docs.ruby-lang.org/en/master/Range.html): Interval of values, e.g. (1..10).
- [Regexp](https://docs.ruby-lang.org/en/master/Regexp.html): Regular expression pattern.

## Core · Collections

Data structures and iteration.

- [Array](https://docs.ruby-lang.org/en/master/Array.html): Ordered, mutable list.
- [Hash](https://docs.ruby-lang.org/en/master/Hash.html): Key/value dictionary preserving insertion order.
- [Set](https://docs.ruby-lang.org/en/master/Set.html): Unordered collection of unique values.
- [Enumerable](https://docs.ruby-lang.org/en/master/Enumerable.html): Mixin providing map, select, reduce & friends.
- [Enumerator](https://docs.ruby-lang.org/en/master/Enumerator.html): Externalize iteration; build lazy pipelines.
- [Comparable](https://docs.ruby-lang.org/en/master/Comparable.html): Mixin for ordering via <=>.

## Core · Classes & Modules

The building blocks of Ruby's object model.

- [Class](https://docs.ruby-lang.org/en/master/Class.html): Blueprint for objects.
- [Module](https://docs.ruby-lang.org/en/master/Module.html): Namespace and mixin container.
- [Method / UnboundMethod](https://docs.ruby-lang.org/en/master/Method.html): First-class method objects.
- [Proc / Lambda](https://docs.ruby-lang.org/en/master/Proc.html): First-class blocks / closures.
- [Kernel](https://docs.ruby-lang.org/en/master/Kernel.html): Methods available on every object (puts, require, ...).

## Core · IO & Files

Reading, writing, streams and processes.

- [IO](https://docs.ruby-lang.org/en/master/IO.html): Base class for input/output streams.
- [File](https://docs.ruby-lang.org/en/master/File.html): File I/O and path operations.
- [Dir](https://docs.ruby-lang.org/en/master/Dir.html): Directory traversal and globbing.
- [Pathname](https://docs.ruby-lang.org/en/master/Pathname.html): Object-oriented file paths (stdlib).
- [StringIO](https://docs.ruby-lang.org/en/master/StringIO.html): IO-like interface over a String.

## Core · Errors & Control

Exceptions, control flow, threading.

- [Exception](https://docs.ruby-lang.org/en/master/Exception.html): Root of the exception hierarchy.
- [StandardError](https://docs.ruby-lang.org/en/master/StandardError.html): Default rescue target.
- [Thread](https://docs.ruby-lang.org/en/master/Thread.html): Native threads.
- [Fiber](https://docs.ruby-lang.org/en/master/Fiber.html): Cooperative micro-threads.
- [Mutex / Queue](https://docs.ruby-lang.org/en/master/Mutex.html): Synchronization primitives.

## Standard Library

Batteries shipped with Ruby.

- [JSON](https://docs.ruby-lang.org/en/master/JSON.html): Parse and generate JSON.
- [Net::HTTP](https://docs.ruby-lang.org/en/master/Net/HTTP.html): HTTP client.
- [URI](https://docs.ruby-lang.org/en/master/URI.html): Parse and build URIs.
- [OpenStruct](https://docs.ruby-lang.org/en/master/OpenStruct.html): Objects with arbitrary attributes.
- [Struct](https://docs.ruby-lang.org/en/master/Struct.html): Value objects generated at runtime.
- [Date / Time / DateTime](https://docs.ruby-lang.org/en/master/Time.html): Dates, times, and arithmetic.
- [CSV](https://docs.ruby-lang.org/en/master/CSV.html): Read/write CSV data.
- [YAML](https://docs.ruby-lang.org/en/master/Psych.html): YAML via Psych.
- [Logger](https://docs.ruby-lang.org/en/master/Logger.html): Structured logging.
- [OptionParser](https://docs.ruby-lang.org/en/master/OptionParser.html): Build CLI flag parsers.
- [SecureRandom](https://docs.ruby-lang.org/en/master/SecureRandom.html): Cryptographic-grade randomness.
- [Digest](https://docs.ruby-lang.org/en/master/Digest.html): MD5/SHA hashing.

## Language & Guides

Learning material from ruby-lang.org.

- [Getting Started](https://www.ruby-lang.org/en/documentation/quickstart/): A tour of Ruby in ~20 minutes.
- [Ruby From Other Languages](https://www.ruby-lang.org/en/documentation/ruby-from-other-languages/): Ruby for Python / JS / Java devs.
- [Ruby's Style Guide](https://www.ruby-lang.org/en/documentation/): Idiomatic Ruby patterns.
- [Syntax Reference](https://docs.ruby-lang.org/en/master/syntax.html): Full grammar & syntax pages.
- [Regexp syntax](https://docs.ruby-lang.org/en/master/Regexp.html): Pattern language reference.
- [Pattern Matching](https://docs.ruby-lang.org/en/master/syntax/pattern_matching_rdoc.html): case/in destructuring.
- [Refinements](https://docs.ruby-lang.org/en/master/syntax/refinements_rdoc.html): Lexically-scoped monkey patches.
- [Ractor](https://docs.ruby-lang.org/en/master/Ractor.html): Parallel actor model.

## Machine-readable index

```json
{
  "name": "RubyDoc.AI",
  "description": "AI-powered chat over the official Ruby language and standard library documentation.",
  "sources": [
    "https://docs.ruby-lang.org/en/master/",
    "https://www.ruby-lang.org/en/documentation/"
  ],
  "sections": [
    {
      "id": "core-basics",
      "title": "Core · Basics",
      "description": "Fundamental value types every Ruby program uses.",
      "entries": [
        {
          "name": "Object",
          "href": "https://docs.ruby-lang.org/en/master/Object.html",
          "summary": "Root of Ruby's object hierarchy."
        },
        {
          "name": "String",
          "href": "https://docs.ruby-lang.org/en/master/String.html",
          "summary": "Mutable sequence of characters."
        },
        {
          "name": "Symbol",
          "href": "https://docs.ruby-lang.org/en/master/Symbol.html",
          "summary": "Interned, immutable identifier."
        },
        {
          "name": "Integer",
          "href": "https://docs.ruby-lang.org/en/master/Integer.html",
          "summary": "Whole numbers of arbitrary size."
        },
        {
          "name": "Float",
          "href": "https://docs.ruby-lang.org/en/master/Float.html",
          "summary": "Double-precision floating-point numbers."
        },
        {
          "name": "Numeric",
          "href": "https://docs.ruby-lang.org/en/master/Numeric.html",
          "summary": "Abstract base of all number types."
        },
        {
          "name": "TrueClass / FalseClass / NilClass",
          "href": "https://docs.ruby-lang.org/en/master/NilClass.html",
          "summary": "Boolean & nil singletons."
        },
        {
          "name": "Range",
          "href": "https://docs.ruby-lang.org/en/master/Range.html",
          "summary": "Interval of values, e.g. (1..10)."
        },
        {
          "name": "Regexp",
          "href": "https://docs.ruby-lang.org/en/master/Regexp.html",
          "summary": "Regular expression pattern."
        }
      ]
    },
    {
      "id": "core-collections",
      "title": "Core · Collections",
      "description": "Data structures and iteration.",
      "entries": [
        {
          "name": "Array",
          "href": "https://docs.ruby-lang.org/en/master/Array.html",
          "summary": "Ordered, mutable list."
        },
        {
          "name": "Hash",
          "href": "https://docs.ruby-lang.org/en/master/Hash.html",
          "summary": "Key/value dictionary preserving insertion order."
        },
        {
          "name": "Set",
          "href": "https://docs.ruby-lang.org/en/master/Set.html",
          "summary": "Unordered collection of unique values."
        },
        {
          "name": "Enumerable",
          "href": "https://docs.ruby-lang.org/en/master/Enumerable.html",
          "summary": "Mixin providing map, select, reduce & friends."
        },
        {
          "name": "Enumerator",
          "href": "https://docs.ruby-lang.org/en/master/Enumerator.html",
          "summary": "Externalize iteration; build lazy pipelines."
        },
        {
          "name": "Comparable",
          "href": "https://docs.ruby-lang.org/en/master/Comparable.html",
          "summary": "Mixin for ordering via <=>."
        }
      ]
    },
    {
      "id": "core-classes",
      "title": "Core · Classes & Modules",
      "description": "The building blocks of Ruby's object model.",
      "entries": [
        {
          "name": "Class",
          "href": "https://docs.ruby-lang.org/en/master/Class.html",
          "summary": "Blueprint for objects."
        },
        {
          "name": "Module",
          "href": "https://docs.ruby-lang.org/en/master/Module.html",
          "summary": "Namespace and mixin container."
        },
        {
          "name": "Method / UnboundMethod",
          "href": "https://docs.ruby-lang.org/en/master/Method.html",
          "summary": "First-class method objects."
        },
        {
          "name": "Proc / Lambda",
          "href": "https://docs.ruby-lang.org/en/master/Proc.html",
          "summary": "First-class blocks / closures."
        },
        {
          "name": "Kernel",
          "href": "https://docs.ruby-lang.org/en/master/Kernel.html",
          "summary": "Methods available on every object (puts, require, ...)."
        }
      ]
    },
    {
      "id": "core-io",
      "title": "Core · IO & Files",
      "description": "Reading, writing, streams and processes.",
      "entries": [
        {
          "name": "IO",
          "href": "https://docs.ruby-lang.org/en/master/IO.html",
          "summary": "Base class for input/output streams."
        },
        {
          "name": "File",
          "href": "https://docs.ruby-lang.org/en/master/File.html",
          "summary": "File I/O and path operations."
        },
        {
          "name": "Dir",
          "href": "https://docs.ruby-lang.org/en/master/Dir.html",
          "summary": "Directory traversal and globbing."
        },
        {
          "name": "Pathname",
          "href": "https://docs.ruby-lang.org/en/master/Pathname.html",
          "summary": "Object-oriented file paths (stdlib)."
        },
        {
          "name": "StringIO",
          "href": "https://docs.ruby-lang.org/en/master/StringIO.html",
          "summary": "IO-like interface over a String."
        }
      ]
    },
    {
      "id": "core-errors",
      "title": "Core · Errors & Control",
      "description": "Exceptions, control flow, threading.",
      "entries": [
        {
          "name": "Exception",
          "href": "https://docs.ruby-lang.org/en/master/Exception.html",
          "summary": "Root of the exception hierarchy."
        },
        {
          "name": "StandardError",
          "href": "https://docs.ruby-lang.org/en/master/StandardError.html",
          "summary": "Default rescue target."
        },
        {
          "name": "Thread",
          "href": "https://docs.ruby-lang.org/en/master/Thread.html",
          "summary": "Native threads."
        },
        {
          "name": "Fiber",
          "href": "https://docs.ruby-lang.org/en/master/Fiber.html",
          "summary": "Cooperative micro-threads."
        },
        {
          "name": "Mutex / Queue",
          "href": "https://docs.ruby-lang.org/en/master/Mutex.html",
          "summary": "Synchronization primitives."
        }
      ]
    },
    {
      "id": "stdlib",
      "title": "Standard Library",
      "description": "Batteries shipped with Ruby.",
      "entries": [
        {
          "name": "JSON",
          "href": "https://docs.ruby-lang.org/en/master/JSON.html",
          "summary": "Parse and generate JSON."
        },
        {
          "name": "Net::HTTP",
          "href": "https://docs.ruby-lang.org/en/master/Net/HTTP.html",
          "summary": "HTTP client."
        },
        {
          "name": "URI",
          "href": "https://docs.ruby-lang.org/en/master/URI.html",
          "summary": "Parse and build URIs."
        },
        {
          "name": "OpenStruct",
          "href": "https://docs.ruby-lang.org/en/master/OpenStruct.html",
          "summary": "Objects with arbitrary attributes."
        },
        {
          "name": "Struct",
          "href": "https://docs.ruby-lang.org/en/master/Struct.html",
          "summary": "Value objects generated at runtime."
        },
        {
          "name": "Date / Time / DateTime",
          "href": "https://docs.ruby-lang.org/en/master/Time.html",
          "summary": "Dates, times, and arithmetic."
        },
        {
          "name": "CSV",
          "href": "https://docs.ruby-lang.org/en/master/CSV.html",
          "summary": "Read/write CSV data."
        },
        {
          "name": "YAML",
          "href": "https://docs.ruby-lang.org/en/master/Psych.html",
          "summary": "YAML via Psych."
        },
        {
          "name": "Logger",
          "href": "https://docs.ruby-lang.org/en/master/Logger.html",
          "summary": "Structured logging."
        },
        {
          "name": "OptionParser",
          "href": "https://docs.ruby-lang.org/en/master/OptionParser.html",
          "summary": "Build CLI flag parsers."
        },
        {
          "name": "SecureRandom",
          "href": "https://docs.ruby-lang.org/en/master/SecureRandom.html",
          "summary": "Cryptographic-grade randomness."
        },
        {
          "name": "Digest",
          "href": "https://docs.ruby-lang.org/en/master/Digest.html",
          "summary": "MD5/SHA hashing."
        }
      ]
    },
    {
      "id": "guides",
      "title": "Language & Guides",
      "description": "Learning material from ruby-lang.org.",
      "entries": [
        {
          "name": "Getting Started",
          "href": "https://www.ruby-lang.org/en/documentation/quickstart/",
          "summary": "A tour of Ruby in ~20 minutes."
        },
        {
          "name": "Ruby From Other Languages",
          "href": "https://www.ruby-lang.org/en/documentation/ruby-from-other-languages/",
          "summary": "Ruby for Python / JS / Java devs."
        },
        {
          "name": "Ruby's Style Guide",
          "href": "https://www.ruby-lang.org/en/documentation/",
          "summary": "Idiomatic Ruby patterns."
        },
        {
          "name": "Syntax Reference",
          "href": "https://docs.ruby-lang.org/en/master/syntax.html",
          "summary": "Full grammar & syntax pages."
        },
        {
          "name": "Regexp syntax",
          "href": "https://docs.ruby-lang.org/en/master/Regexp.html",
          "summary": "Pattern language reference."
        },
        {
          "name": "Pattern Matching",
          "href": "https://docs.ruby-lang.org/en/master/syntax/pattern_matching_rdoc.html",
          "summary": "case/in destructuring."
        },
        {
          "name": "Refinements",
          "href": "https://docs.ruby-lang.org/en/master/syntax/refinements_rdoc.html",
          "summary": "Lexically-scoped monkey patches."
        },
        {
          "name": "Ractor",
          "href": "https://docs.ruby-lang.org/en/master/Ractor.html",
          "summary": "Parallel actor model."
        }
      ]
    }
  ]
}
```