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C — Hello World

The classic hello-world in C — an include, main, and printf — for testing highlighters, C compilers, and parsers against the canonical first program.

File: C · C
Use case: Syntax highlightingCode parsing+1

C — Linked list (structs, malloc, pointers)

A realistic C program: a singly linked list with a typedef struct, malloc/free memory management, pointer walking, and error handling — for testing highlighters, compilers, and static analysers.

File: C · C
Use case: Syntax highlightingCode parsing+1

C Struct

C struct SAMPLE for clangd / highlighter fixtures.

File: C · C
Use case: Syntax highlightingCode parsing+1

C# Fibonacci

A small C# iterator Fibonacci utility — realistic snippet for language tooling.

File: CS · Csharp
Use case: Syntax highlightingCode parsing+1

C# Hello

Idiomatic C# hello-world for syntax highlighters and Roslyn-style parsers.

File: CS · Csharp
Use case: Syntax highlightingCode parsing+1

C# LINQ SAMPLE

C# LINQ chain SAMPLE for Roslyn fixtures.

File: CS · Csharp
Use case: Syntax highlightingCode parsing+1

C++ — Hello World

The classic hello-world in C++ — iostream and std::cout — for testing highlighters, C++ compilers, and parsers.

File: CPP · C++
Use case: Syntax highlightingCode parsing+1

C++ — Series (class template, STL)

A realistic C++ snippet with a class template, STL algorithms (max_element, accumulate), std::move, and range handling — for testing highlighters, g++/clang++, and parsers against real templates.

File: CPP · C++
Use case: Syntax highlightingCode parsing+1

C++ Optional

C++17 optional SAMPLE for clangd fixtures.

File: CPP · C++ · cpp
Use case: Syntax highlightingCode parsing+1

Clojure — Intentionally Invalid

Intentionally invalid Clojure (unbalanced forms) for clj-kondo-style tests.

File: CLJ · Clojure
Use case: Error handlingCode parsing+1

Clojure Hello

Minimal Clojure hello for CIDER / clj-kondo fixtures.

File: CLJ · Clojure
Use case: Syntax highlightingCode parsing+1

Clojure Reduce

Clojure reduce utility — realistic snippet.

File: CLJ · Clojure
Use case: Syntax highlightingCode parsing+1

Clojure Thread Macro

Clojure thread-first macro for highlighter tests.

File: CLJ · Clojure
Use case: Syntax highlightingCode parsing+1

Code Config — Docker Compose Snippet

Tiny SAMPLE tooling config snippet (docker-compose-snippet) for editor/linter harnesses.

File: YAML · YAML
Use case: Config parsingEditor testing+1· Conversion set

Code Config — Editorconfig Snippet

Tiny SAMPLE tooling config snippet (editorconfig-snippet) for editor/linter harnesses.

File: CONF · YAML
Use case: Config parsingEditor testing+1· Conversion set

Code Config — Eslint Flat Snippet

Tiny SAMPLE tooling config snippet (eslint-flat-snippet) for editor/linter harnesses.

File: JS · JavaScript
Use case: Config parsingEditor testing+1· Conversion set

Code Config — Github Actions Snippet

Tiny SAMPLE tooling config snippet (github-actions-snippet) for editor/linter harnesses.

File: YAML · YAML
Use case: Config parsingEditor testing+1· Conversion set

Code Config — Prettier Config

Tiny SAMPLE tooling config snippet (prettier-config) for editor/linter harnesses.

File: JSON · JSON
Use case: Config parsingEditor testing+1· Conversion set

Code Config — Tsconfig Strict Snippet

Tiny SAMPLE tooling config snippet (tsconfig-strict-snippet) for editor/linter harnesses.

File: JSON · JSON
Use case: Config parsingEditor testing+1· Conversion set

Csharp Lint Invalid — Empty Catch Invalid

Intentionally lint-bait SAMPLE csharp snippet (empty-catch-invalid) for rule-engine tests.

File: CS · Csharp
Use case: Code parsingSyntax highlighting+1· Conversion set

CSS — Component styles (variables, flexbox, keyframes)

A realistic component stylesheet using custom properties, flexbox, a fluid clamp() font size, color-mix(), a keyframe animation, and a media query — for testing CSS parsers, linters (stylelint), and highlighters.

File: CSS · Css
Use case: Syntax highlightingCode parsing+1

CSS — Hello World

A minimal stylesheet that centres a heading with grid — the simplest useful CSS file for testing highlighters, CSS parsers, and minifiers.

File: CSS · Css
Use case: Syntax highlightingCode parsing+1

Dart Counter

Tiny Dart class with a counter — fixture for Dart analysis servers.

File: DART · Dart
Use case: Syntax highlightingCode parsing+1

Dart Future

Dart async Future SAMPLE for analysis-server tests.

File: DART · Dart
Use case: Syntax highlightingCode parsing+1