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Cheatsheets

Language cheatsheets

Quick syntax references for popular programming languages. Find what you need, copy it, ship it.

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Python

32 sections · 167 items

Versatile, readable language for web, data, AI, and automation.

Getting StartedVariables & Data TypesStringsNumbers & Math
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JavaScript

30 sections · 135 items

The language of the web — frontend, backend, and beyond.

Getting StartedStringsNumbers & MathData Structures
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Go

29 sections · 150 items

Fast, statically typed language built for simplicity and concurrency.

Getting StartedStrings & FormattingControl FlowFunctions
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TypeScript

30 sections · 168 items

Typed superset of JavaScript that scales.

Getting StartedBasic TypesInterfaces & ObjectsType Aliases & Unions
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Rust

26 sections · 132 items

Systems language focused on safety, speed, and concurrency.

BasicsStringsData StructuresControl Flow
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Java

31 sections · 163 items

Enterprise-grade object-oriented language, write once run anywhere.

Getting StartedStrings & FormattingControl FlowMethods & Functions
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SQL

25 sections · 126 items

Standard language for managing and querying relational databases.

SELECT & Query BasicsJOINsGROUP BY & AggregationSubqueries & CTEs
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HTML

27 sections · 140 items

The standard markup language for creating web pages.

Document StructureText FormattingLinks & NavigationImages & Multimedia
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CSS

27 sections · 137 items

Style sheet language for describing the presentation of web pages.

SelectorsBox ModelColors & UnitsTypography
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React

25 sections · 127 items

JavaScript library for building user interfaces with components.

JSX & ComponentsPropsuseState & StateuseEffect & Side Effects
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Git

25 sections · 126 items

Distributed version control system for tracking source code changes.

Configuration & InitializationStaging & CommittingBranching & MergingRemote Repositories
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Bash

25 sections · 126 items

Unix shell and command language for scripting.

Variables & StringsArraysControl Flow & TestsLoops & Iteration
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