Reference
16 cheatsheets covering regex、正则、pattern、match、http and more
Regex Cheatsheet - Common Patterns & Syntax Reference
One-page Regex reference covering character classes, anchors, quantifiers, groups, lookahead/lookbehind, greedy vs lazy matching, plus practical patterns for email, URL and phone. Quick lookup, copy directly.
HTTP Methods Cheatsheet - REST/HTTP Verbs & Idempotency
One-page HTTP methods & REST semantics: GET/POST/PUT/PATCH/DELETE verbs, idempotency, safe methods, status-code pairing and common misuses. Pairs with the HTTP Status Codes sheet for API design & debugging. Quick lookup, copy directly.
Regular Expressions Cheatsheet - Regex Syntax Reference
One-page regex syntax reference covering character classes, quantifiers, anchors, groups & captures, lookahead/lookbehind, common patterns, and flags. For grep/sed/awk/JavaScript/Python. Quick lookup, copy and paste.
HTTP Status Codes Cheatsheet - HTTP Response Status Code Reference
One-page HTTP Status Codes quick reference with 38+ common commands across 5 grouped sections (http, nginx, rest). Quick lookup, copy and run.
Markdown Cheatsheet - Markdown Syntax Reference
One-page Markdown syntax reference covering headings, text formatting, links & images, lists, code blocks, tables, blockquotes, and GFM extensions. For writing docs and READMEs. Quick lookup, copy and paste.
LaTeX Cheatsheet - LaTeX Academic Typesetting Reference
One-page LaTeX quick reference with 45+ common commands across 7 grouped sections (latex). Quick lookup, copy and run.
ASCII Code Cheatsheet - ASCII Character Encoding Reference
One-page ASCII Code quick reference with 61+ common commands across 7 grouped sections (ascii). Quick lookup, copy and run.
MIME Types Cheatsheet - Content-Type Reference
One-page MIME Types quick reference with 47+ common commands across 7 grouped sections (mime, content-type, http). Quick lookup, copy and run.
HTML Character Entities Cheatsheet - HTML Special Characters Reference
One-page HTML Character Entities quick reference with 38+ common commands across 6 grouped sections (html, xss). Quick lookup, copy and run.
Emoji Unicode Cheatsheet - Emoji Encoding Reference
One-page Emoji Unicode quick reference with 48+ common commands across 6 grouped sections (emoji, unicode). Quick lookup, copy and run.
Screen Resolution & Aspect Ratio Cheatsheet - Device Resolution Reference
One-page Screen Resolution & Aspect Ratio quick reference with 38+ common commands across 6 grouped sections. Quick lookup, copy and run.
ISO 639-1 Cheatsheet - Language Code Reference
One-page ISO 639-1 quick reference with 49+ common commands across 6 grouped sections (iso, i18n). Quick lookup, copy and run.
SemVer Cheatsheet - Semantic Versioning Reference
One-page SemVer quick reference with 33+ common commands across 6 grouped sections (semver, npm). Quick lookup, copy and run.
RESTful API Cheatsheet - REST API Design Reference
One-page RESTful API quick reference with 46+ common commands across 7 grouped sections (rest, api, http). Quick lookup, copy and run.
CIDR Cheatsheet - Subnet Mask & IP Address Reference
One-page CIDR quick reference with 34+ common commands across 6 grouped sections (cidr, ip). Quick lookup, copy and run.
Date & Time Format Cheatsheet - Date Formatting & Timestamp Reference
One-page Date & Time Format quick reference with 50+ common commands across 7 grouped sections (datetime, strftime). Quick lookup, copy and run.