YAML - Data notation

home terminal edit

YAML, aka YAML Ain't Markup Language, is an open source data notation created in 2001 by Clark Evans and Oren Ben-Kiki and Ingy döt Net.

#44on PLDB

23Years Old

525Repos

Homepage · Leet Sheet · REPL · Spec · Wikipedia · Docs

YAML (YAML Ain't Markup Language) is a human-readable data serialization language. It is commonly used for configuration files, but could be used in many applications where data is being stored (e.g. debugging output) or transmitted (e.g. Read more on Wikipedia...

Tags: dataNotation
There are at least 525 YAML repos on GitHub
The Google BigQuery Public Dataset GitHub snapshot shows 12 users using YAML in 13 repos on GitHub
YAML LSP implementation
CodeMirror package for syntax highlighting YAML
Monaco package for syntax highlighting YAML
Pygments supports syntax highlighting for YAML
GitHub supports syntax highlighting for YAML
See also: (11 related languages) JSON, Perl, Python, MIME, C, HTML, SOAP, Emacs, UTF-8, AsciiDoc, S-expressions
722 PLDB concepts link to YAML: 05AB1E, Armed Bear Common Lisp, abs, Ace Editor, Adept, Aheui, AIL, AL, a Lisp Environment, Alma, Alpaca, Alumina, Amber, ana, Ante, Apache Hbase, aretext, Ark, ArkScript, Arquero, arret, AsciiDots, ASDF, AssemblyScript, asterius-compiler, astroml, atomspace, attoparsec, Austral, AviSynth, badlanguage, Ballerina, bamboo, Basis Codec, Bazel, BeBasic, bee, beef-lang, Bend, Berry, Bicep, binaryen, Bio, Bitsy, Blacklight, BlazeX, Blech, bloom, blur-markup-language, blz, bog, Boomerang Decompiler, bosque, Bounce, bpkg-pm, Broccoli, Bucardo, Bucklescript, buzz, C2, C3, Calc4, Calypso, candor, Candy, Cane, Cap'n Proto, capybara, Caramel, Carbon, carp, carth, cat, Catala, categorical-query-language, Ceylon, chaiscript, Chapel, Charcoal, chatterbot, chevrotain, chisel, Ć, Civet, Claro, clash, Click, cloc, Clojure, ClojureScript, Closure Templates, co-dfns, Coconut, codecept, CodeMirror, CoffeeScript, Cognate, comby, CWL, commonmark, Conan, contracts.coffee, Coq, cor, Cortex, cosh, Cotton, CouchDB, crmsh, Cryptol, Crystal, CSON, CSS Doodle, CSVw, Cue, cuneiform, curv, Cwerg, Cyber, cytosol, D3.js, Dafny, Dak, Dale, daonode, Dashrep, Dasm, dat-protocol, datascript, DDP, dedukti, Deno, Dern, dex, dexvis, dgraph, Dhall, Differential Datalog, djangoql, Djot, docopt, Dogescript, dplyr, dreamlisp, dub-pm, dyvil, Easybuild, eC, eco-editor, Embedded Crystal, ecsharp, edgedb, Đ, Edina, eff, egel, Egison, Eiffel, EJS, elena, ELFE, Elixir, Elm, Elpi, Elvish, elymas, emberjs-framework, EmberScript, Emojicode, Emscripten, Encore, Enso, erg, Erlang, Euphoria, Eve, expresso, F Prime, Factor, Fancy, Farcaster, Fardlang, fay, Felix, Fennel, ferret, fetlang, firrtl, fish, flame-ir, FlatBuffers, fleck, FLEX, Flix, Flow, Flow9, FlowchartFun, flownote, FLUX, forest-lang, ForthScript, fp, Functional PHP Preprocessor, Frank, Frege, F*, Futhark, Fuzuli, g-fu, GAP, GN, gentee, GETlang, Gforth, gintonic, Git, gleam, Glicol, Glisp, gluon, Go, gogs-editor, Golo, Gradle, GraphIt, gravity, Gren, grid-notation, gridstudio-editor, gura, Gwion, h, Hackett, hacspec, hakaru, HAL Format, Halide, hamdown, HAML, hamler, Hare, harlan, hashlink, haste, Haxe, Haxe Library Manager, Hazel, HCL, Hera, Heron, HHVM, highlight.js, hilvl, hivemind, hobbes, Homebrew, Hook, Horse64, Hot Cocoa Lisp, HTL, htmx, huginn, HuJSON, hurl, Hy, Hyperscript, HyPhy, Ibis, icarus, Idio, Idris, idyll, Imba, ImHex, Impala, infusion-framework, ink-lang, ink, inko, Insitux, invokator, InterPlanetary File System, Iterm2, Invisible XML, J, Jakt, JAL compiler, Janet, Jank, jasmine, Java, jayfor, Jedi, jeebox, Jekyll, Jemplate, Jesth, JFlex, Jingo, Jinja, jinx, Jison, jonprl, jq, JSON Query Language, JQuery, jsil-compiler, JSLT, json-graph-format, JSON lambda, JSON-LD, JSON Schema, JSONScript, json->url, JSON with Comments, JSON5, Jsonnet, jsparagus, Jule, Julia, juvix, k-framework, kai, kaitai, Kakoune, Kal, Kalyn, KamilaLisp, KAML, KaTeX, Kefir, keli, Keras, kima, kitlang, kitten, ko, koara, Koka, kona, Kotlin, ktexteditor-editor, ktye/k, Kubernetes, kumir, Kuroko, Ladybird, lambda-zero, lamdu-editor, Lamdu, latino, Latte, Lawvere, ldpl, Lean, lem-editor, leo-editor, Lesma, Ligo, Lil, lila-lang, Lily, Link, Links, Linotte, Linux, Liquid, lispyscript, Literate CoffeeScript, LiteScript, lobster, loci, Lodash, Logica, lsd, Lucid, Luna, Luna, Lux, LWJGL, m3db, mages, Magit, mal, manhood, Manim, manool, Markaby, Marko, MarkovJunior, Markus, Markwhen, Marp, Mask, Mastodon, mathics, MathJSON, Mathpix Markdown, Matplotlib, MDX, Mech, Megaparsec, Melody, mermaid, Metalang99, Mewl, MewMew, mgmt, micro-editor, micro-mitten, MicroPython, mimium, Mindsdb, Minilang, MiniZinc, Mirah, mirth, mlatu, mochajs, Mojo, Monaco Editor, Mond, MongoDB, monte, MoonScript, multiaddr, multibase, multicodec, mun-lang, mustache, myia, mys, Nadesiko, NCAR Command Language, Nearley, Neko, NestedText, NetLogo, neut, neutron, never, NewLisp, Nextflow, NGS, Nim, Ninja, Nit, Natural Language Toolkit, Node.js, noisecraft, noms-db, Numba, Nushell, nydp, Observable Framework, Observable, Observable Plot, obsidian, Octune, oden, odin, ohm, oil, OK, Omgrofl, onnx, ooc, oopsilon, opam-pm, OpenNN, Open Shading Language, OpenRC runscript, orange, orca-pl, Oxyl, P, packagist-pm, Pact, Pan, Pandas, Parsers, partiql, PCRE, Pegasus, PEG.js, penrose, Perl, PgBouncer, Phel, phorth, PHP, pie-lang, pikelet, Plaid, plam, Please Build, Pod6, Podlite, PogoScript, pointless, polyglot-compiler, Pomsky, Pony, popr, PostCSS, PostgreSQL, Potion, POV-Ray SDL, PowerShell, Prism, Project Mentat, PROMETHEUS, PRQL, psyche-c, psyche, Pug, PureScript, Pycket, Pygments, Python, PyTorch, QOIR, Qore, Racket, Rakudo, RamdaScript, ramen, RAML, rant, raptorjit, React Native, Readable, Reason, Rebeca Modeling Language, Red, Redis, redprl, reflex-framework, Ren-C, RetDec, Revolution, rhine, Rholang, RicScript, Riff, RigC, Rita, RMarkdown, RobotFramework, Roc, Rockstar, Ron, rosie, Roslyn compiler, roy, ru, Ruby, Rust, Rye, SATySFi, Savi, Scala.js, Scikit-learn, SciPy, Scoop, score, scribble, Scroll, Scroll Notation, Scryer Prolog, SDMS, Semantic Versioning, sentient, Seq, sham, shiv, shml, Sibilant, sile, sill, Simple Binary Encoding, sixten, sizzle, skip, skulpt, Slab, Slash, Slashdown, Slim Framework, Slim, SMC, Semantic Patch Language, Snowball, Snowman, solid, Solidity, son, Sophia, Sophie, souper, SourcePawn, Spatial, Speedie, spider, SpiderBasic, spry, Sqlalchemy, SQRL, squiggle, Squirrel, SRL, Secure Scuttlebutt, Script.NET, stacklang, starlark, Stencil, STON, Streem, Sublime Syntax, SugarSS, sugartex, Superjson, Svelte, svgbob, Swallow, Sweet.js, SWI Prolog, Swift, SymPy, t-lang, t2b, tablam, Taichi, Taijilang, tao3d, Tawa, tbox-lib, tea, TensorFlow, Terra, TestML, Textadept, texti, Textile, tibet, tidyverse, tiledb, Tiny C Compiler, titan, Typed Lua, tldr, tldraw, toki sona, TOML, Topaz, tornado, Toy, TreeSheets, tridash, Triton, truck, Twine, twtxt, typecobol, TypeScript, UCG, UCL, Uiua, ultralisp-pm, Umka, Uno, unseemly, UrWeb, V, v8, Vale, Vcpkg, vega-editor-app, Vega, verona, Veryl, video, Vimwiki, Virgil, VSXu, Vue, vyper, Vyxal, walt, WebAssembly, wasmer, Wasp, WDL, 文言文編程語言, whack, Whiley, Wing, wisp, Wonkey, Wren, Wu, Wyvern, Xgboost, XGBoost, Xidoc, XL, xlwings-editor, xodio, xsv-app, Ecstasy, Xtext, Yakou Lang, YAMP, YANG, YARA, Yet Another Scripting Language, YASnippet, Yes It Is, YoptaScript, Z-flat, Zephir, zz

Example from Riju:

output: "Hello, world!"

Example from hello-world:

hello: world

Example from Linguist:

---
name: R Console
fileTypes: []

scopeName: source.r-console
uuid: F629C7F3-823B-4A4C-8EEE-9971490C5710
patterns:
- name: source.r.embedded.r-console
  begin: "^> "
  beginCaptures:
    "0":
      name: punctuation.section.embedded.r-console
  end: \n|\z
  patterns:
  - include: source.r
keyEquivalent: ^~R

Example from Wikipedia:

---
example: >
        HTML goes into YAML without modification
message: |

        <blockquote style="font: italic 12pt Times">
        <p>"Three is always greater than two,
           even for large values of two"</p>
        <p>--Author Unknown</p>
        </blockquote>
date: 2007-06-01

Language features

Feature	Supported	Example	Token
Sets	✓	# Explicitly typed set. baseball players: !!set ? Mark McGwire ? Sammy Sosa ? Ken Griffey # Flow style baseball teams: !!set { Boston Red Sox, Detroit Tigers, New York Yankees }
Comments	✓
Line Comments	✓	# A comment	#
Semantic Indentation	✓