Blog
Tutorials, guides, and insights to help you become a better developer.
DNS translates domain names to IPs via a hierarchical delegation tree. Here's what actually happens between typing a URL and your browser connecting.
AdminJanuary 19, 202610 min read
useDebounce, useLocalStorage, useMediaQuery, and seven more custom hooks that solve the same problems in every React project — with production-ready TypeScript implementations.
AdminJanuary 16, 20267 min read
Two pointers, one pass, O(n) — learn how the variable-size sliding window grows and shrinks to solve substring and subarray problems efficiently.
AdminJanuary 15, 20264 min read
Custom hooks replaced render props for most cases — but not all. Learn the four scenarios where the old pattern still wins, with TypeScript examples.
AdminJanuary 13, 20266 min read
Stop re-summing from scratch — the fixed-size sliding window reduces O(n·k) nested loops to a single O(n) pass by adding one element and dropping one.
AdminJanuary 12, 20264 min read
Most people reach for the nested loop on Two Sum — here's why the hash map pattern is the interview move, plus 3Sum and sorted variants.
AdminJanuary 9, 20265 min read
AdminJanuary 8, 202611 min read
beginner
AdminJanuary 6, 20264 min read
AdminJanuary 5, 20261 min read
PreviousPage 14 of 14