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Ruby ranges are a clean way to represent a sequence of values—most commonly numbers, letters, or dates. You’ll see ranges everywhere in Ruby, from loops to filtering arrays to case …

File I/O (Input/Output) in Ruby lets you read from and write to files easily and safely. Whether you’re processing logs, saving user data, or generating reports, Ruby’s File and IO …

Regular expressions (regex) are a powerful way to search, match, extract, and replace text in Ruby. Ruby has first-class regex support built right into the language, making text processing concise …

Exceptions are Ruby’s built-in way of handling errors and unexpected situations without crashing your program. Instead of checking every possible failure manually, Ruby lets you rescue exceptions, handle them gracefully, …

Iterators are a core part of Ruby’s expressive style. Instead of writing manual loops, Ruby encourages you to iterate over collections using blocks, making code cleaner, safer, and more readable. …

Ruby makes working with dates and times pleasantly straightforward once you know which class to reach for: Date (calendar dates, no time of day) Time (time of day + timezone/offset, …

Hashes in Ruby are collections of key-value pairs, similar to dictionaries in other programming languages. They allow you to store and retrieve data efficiently using keys. What You’ll Learn 1. …

Ruby is an object-oriented programming language, and everything in Ruby is an object. Classes are blueprints for objects, defining their behavior and attributes. Objects are instances of classes. What You’ll …

Modules in Ruby are a way to group related methods, constants, and classes together. They are similar to classes but cannot be instantiated. Modules are primarily used for namespacing and …

Blocks in Ruby are anonymous chunks of code that can be passed to methods as arguments. They are a powerful feature of Ruby, allowing for concise and flexible code execution. …