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PHP — Hello World

The classic hello-world in PHP — an opening tag and echo — for testing highlighters, the PHP interpreter, and parsers.

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

PHP — Invoice (enum, class, promoted properties)

A realistic modern-PHP snippet with strict types, a namespace, a backed enum, a final class with constructor-promoted readonly properties, and array_reduce with an arrow function — for testing highlighters, PHPStan, and parsers.

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

PHP Attributes

PHP 8 attributes SAMPLE for PHP tooling.

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

Php Lint Invalid — Error Suppression Invalid

Intentionally lint-bait SAMPLE php snippet (error-suppression-invalid) for rule-engine tests.

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

Python — Fibonacci (dataclass, generator, type hints)

A realistic Python snippet exercising type hints, an lru_cache-memoised recursive function, a generator, and a frozen dataclass — for testing syntax highlighters, linters (ruff/flake8), and formatters (black).

File: PY · Python
Use case: Syntax highlightingCode parsing+1

Python — Hello World

The classic hello-world in idiomatic Python 3, with a shebang, a module docstring, and the standard main guard — the minimal correct program for testing highlighters and interpreters.

File: PY · Python
Use case: Syntax highlightingCode parsing+1

Python — Intentionally Invalid Indent

Intentionally invalid Python indentation for linter / parser error-path tests. Labelled intentionally invalid in title and description.

File: PY · Python
Use case: Error handlingCode parsing+1

Python — Intentionally Invalid Match

Intentionally invalid Python match (missing colon) for linters.

File: PY · Python
Use case: Error handlingCode parsing+1

Python Async Gather

Tiny asyncio gather stub for async Python tooling.

File: PY · Python
Use case: Syntax highlightingCode parsing+1

Python Dataclass SAMPLE

Python dataclass SAMPLE for highlighter and type-checker smoke tests.

File: PY · Python
Use case: Syntax highlightingCode parsing+1

Python Lint Invalid — Bare Except Invalid

Intentionally lint-bait SAMPLE python snippet (bare-except-invalid) for rule-engine tests.

File: PY · Python
Use case: Code parsingSyntax highlighting+1· Conversion set

Python Lint Invalid — Unused Import Invalid

Intentionally lint-bait SAMPLE python snippet (unused-import-invalid) for rule-engine tests.

File: PY · Python
Use case: Code parsingSyntax highlighting+1· Conversion set

R — Intentionally Invalid

Intentionally invalid R (unclosed call) for parser tests.

File: R · R
Use case: Error handlingCode parsing+1

R Data Frame

R data.frame construction — realistic snippet for R parsers.

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

R Hello

Minimal R hello-world for RStudio / language-server fixtures.

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

R Pipe

R native pipe (|>) snippet for modern R tooling.

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

Ruby — Hello World

The classic hello-world in Ruby — a single puts — for testing highlighters, the Ruby interpreter, and parsers.

File: RB · Ruby
Use case: Syntax highlightingCode parsing+1

Ruby — Stack (Enumerable, blocks, custom error)

A realistic Ruby snippet: a Stack class that mixes in Enumerable, yields blocks, raises a custom error class, and uses string interpolation and symbol-to-proc — for testing highlighters, RuboCop, and parsers.

File: RB · Ruby
Use case: Syntax highlightingCode parsing+1

Ruby Lint Invalid — Rescue All Invalid

Intentionally lint-bait SAMPLE ruby snippet (rescue-all-invalid) for rule-engine tests.

File: RB · Ruby
Use case: Code parsingSyntax highlighting+1· Conversion set

Ruby Module

Ruby nested module SAMPLE for parser tests.

File: RB · Ruby
Use case: Syntax highlightingCode parsing+1

Rust — Hello World

The classic hello-world in Rust — fn main and the println! macro — for testing highlighters, rustc, and parsers.

File: RS · Rust
Use case: Syntax highlightingCode parsing+1

Rust — Intentionally Invalid

Intentionally invalid Rust for rustc error-path fixtures.

File: RS · Rust
Use case: Error handlingCode parsing+1

Rust — Shapes (enum, trait, pattern matching)

A realistic Rust snippet with an enum carrying data, a trait and impl, exhaustive match, iterators, and Option handling — for testing highlighters, rustc, clippy, and parsers against real ownership-era code.

File: RS · Rust
Use case: Syntax highlightingCode parsing+1

Rust Lint Invalid — Unwrap Invalid

Intentionally lint-bait SAMPLE rust snippet (unwrap-invalid) for rule-engine tests.

File: RS · Rust
Use case: Code parsingSyntax highlighting+1· Conversion set