Quick Reference

Cheat sheets for every stack.

Essential syntax, commands, and patterns — distilled into one-page references you can scan in seconds. Bookmark them for your daily workflow.

10 cheat sheets Free forever Print-friendly

Python Cheat Sheet

Essential Python syntax, data structures, functions, comprehensions, file I/O, and common patterns in one quick-reference page.

Modern JavaScript essentials — variables, functions, arrays, objects, promises, modules, and DOM manipulation in one quick-reference page.

Essential Git commands for daily development — init, commit, branch, merge, rebase, stash, log, and remote operations in one quick reference.

Docker commands you need every day — images, containers, volumes, networks, Compose, and Dockerfile patterns in one quick-reference page.

TypeScript types, generics, utility types, interfaces, enums, and common patterns you need every day — in one quick-reference page.

React hooks, components, state, effects, context, refs, and common patterns — everything you reach for daily in one quick-reference page.

SQL essentials — SELECT, JOIN, GROUP BY, window functions, subqueries, indexes, and schema operations in one quick-reference page.

Essential Linux commands for files, permissions, processes, networking, disk usage, and shell scripting in one quick-reference page.

Go syntax essentials — variables, functions, structs, interfaces, goroutines, channels, error handling, and common patterns in one quick reference.

Essential kubectl commands, pod specs, deployments, services, configmaps, secrets, and debugging patterns in one quick-reference page.

Each cheat sheet covers the essentials. For full tutorials, explore our topic pages.