Programming Cheat Sheet Bundle, 7 Printable PDFs | Python, SQL, TypeScript, React Hooks, Next.js, Docker, Git | Developer Reference

Seven developer cheat sheets in one download, 129 pages in total. Not the "syntax on a poster" kind: every section is a working pattern with a code example and the gotcha that bites you at 5 pm on a Friday.

WHAT YOU GET (7 PDFs, instant download)

1. Python Cheat Sheet, 17 sections, 14 pages: data types, strings, lists, dictionaries, sets and tuples, comprehensions, functions and decorators, generators, classes, file I/O, JSON and CSV, error handling, context managers, standard library, async/await, packaging, common patterns.
2. SQL & PostgreSQL Cheat Sheet, 13 sections, 12 pages: CRUD, filtering, joins, aggregations, subqueries and CTEs, window functions, indexes, JSONB, arrays, transactions and locking, performance tuning, query patterns, schema management.
3. TypeScript Cheat Sheet, 80+ patterns in 14 sections, 10 pages: core types, unions and literals, narrowing, generics, utility types, mapped, conditional and template literal types, enums, function and class patterns, modules, React and Next.js patterns, gotchas.
4. React Hooks Cheat Sheet, 19 hooks in 11 sections, 15 pages: useState, useEffect, useContext, useReducer, useMemo and useCallback, useRef, useId, the React 19 hooks, custom hook patterns, gotchas, which hook to use when.
5. Next.js 15 Cheat Sheet, 90+ patterns in 15 sections, 16 pages: App Router conventions, server versus client components, data fetching, server actions, routing, middleware, metadata, caching, loading and error handling, rendering, auth, performance, CLI and config, route handlers.
6. Docker Cheat Sheet, 80+ commands in 11 sections, 11 pages: images, containers, volumes, networks, Compose, Dockerfile best practices, troubleshooting, security, registries, system maintenance, common workflows.
7. Git & GitHub Cheat Sheet, 200+ commands and 50+ aliases, 51 pages: daily workflow, branching and merging, conflict resolution, GitHub CLI, Actions and CI/CD, hooks, reflog and recovery, interactive rebase, bisect, worktrees, patches.

HOW PEOPLE USE THEM
- Print and pin next to the monitor (A4 and US Letter both work)
- Keep open on a second screen while coding
- Onboarding pack for new team members
- Interview prep refresher

WHO IT IS FOR
Junior developers who want the patterns seniors use without asking. Seniors who switch stacks and want the gotchas in one place. Bootcamp students and CS students. Anyone who has Googled the same Git command four times this month.

DETAILS
- Format: PDF, vector text, prints sharp in colour or black and white
- Written and maintained by a developer with 20+ years of shipping software; updated 2026
- Personal and team use inside your own organisation. No resale or redistribution.

HOW IT WORKS
Buy, download instantly from your Etsy Purchases page or the e-mail Etsy sends you, open the PDFs. No account, no login.

Also in my shop: the Test Management Excel Bundle for QA teams.

This is a digital product; nothing is shipped. Refunds are not possible on digital downloads, but if a file does not open or is not as described I will fix it or refund you.