Ruby-code Remove Duplicate Elements From An Array While Preserving Order In Ruby Deduplicate an array in insertion order using Array#uniq.
Ruby 3 Exception Handling in Ruby — rescue, ensure, retry, and raise Done Right Exception handling is one of those topics that feels simple until you hit a subtle bug caused by rescuing too broadly, retrying without a limit, or swallowing errors that should surface. Ruby’s exception
Rails Rails Caching Strategies — From Low-Level Cache to Russian Doll Caching is how Rails apps go from “works fine with 10 users” to “works fine with 10,000 users” without rewriting everything. Rails ships a complete caching toolkit — low-level key-value cache, fragment caching,
Developer tips Deep Work for Developers — Getting Real Hours Back in a World of Interruptions Software development is cognitively one of the most demanding professions there is. Holding a complex system in working memory, tracing execution paths, spotting the subtle interaction between two pieces of code — these
Ruby-code Zip Multiple Arrays Together In Ruby Combine elements from two or more arrays by position using Array#zip.
Ruby 3 Hash.new With Default Values — Ruby's Underused Shortcut Most Ruby developers initialize hashes with {} and manually check for missing keys before updating them. It works, but Ruby’s Hash.new offers a more expressive alternative: hashes that return a default value for
Rails ActiveRecord Callbacks — When to Use Them and When to Stop ActiveRecord callbacks are one of Rails’s most convenient features and one of its most misused. before_save, after_create, after_commit — they let you hook into the model lifecycle and run code automatically, which sounds
Developer tips Salary Negotiation for Developers — What Most People Get Wrong Most developers are bad at negotiating their salary. Not because they lack the skills — the same analytical thinking that makes someone good at debugging complex systems is exactly what’s needed here. They’re
Ruby-code Find Duplicate Elements In An Array In Ruby Detect which values appear more than once in an array using group_by or tally.
Ruby 3 each_with_object vs reduce — Choosing the Right Ruby Aggregator Ruby gives you multiple ways to aggregate a collection into a single result: reduce (aliased as inject), each_with_object, and occasionally tally, sum, or group_by for specific cases. Developers tend to reach for reduce
Rails Rails API Mode — Building JSON APIs Without the Full Stack Overhead Rails started as a framework for server-rendered HTML applications, and it still excels there. But a significant portion of Rails apps today are pure JSON APIs — backends for mobile apps, frontend JavaScript
Developer tips Managing Technical Debt — The Developer's Honest Guide Technical debt is one of those concepts that everyone agrees is real and almost nobody manages well. It accumulates quietly — a rushed feature here, a patch there, a test suite that’s more
Ruby-code Generate A Secure Random Token In Ruby Generating cryptographically secure random tokens is essential for password reset links, API keys, email verification tokens, and any value that must be unpredictable to an attacker.
Ruby 3 include, extend, and prepend — Ruby's Three Ways to Use Modules Ruby modules are one of the language’s most flexible tools — they handle namespacing, mixins, and code sharing without the rigidity of inheritance. But include, extend, and prepend are three different operations that
Rails Action Cable — Real-Time Features in Rails with WebSockets Turbo Streams handle real-time updates elegantly for most cases — server broadcasts a change, the page updates. But Turbo Streams build on top of Action Cable, and sometimes you need to work at
