Haskell Hello
Idiomatic Haskell hello-world for GHC / HLS fixtures.
main :: IO ()
main = putStrLn "Hello, world!"
Specifications
- Language
- haskell
- Role
- idiomatic sample
- Line Endings
- LF
- Wave
- G
What is a .hs file?
Haskell (.hs) source files contain programs in the pure functional Haskell language, typically compiled with GHC.
How to use this file
Use example .hs files to exercise Haskell highlighters, HLS, and parsers on idiomatic hello-world and fold/Maybe snippets.
How to use this file for testing
“Haskell Hello” is a deterministic Novus Examples fixture for Syntax highlighting, Code parsing, Editor testing. Idiomatic hello-world programs and realistic snippets across sixteen languages, exercising comments, string escapes, interpolation, numeric literals, and language keywords — for testing syntax highlighters, editor themes, and tree-sitter grammars.
Documented properties for this file: idiomatic sample · haskell · LF. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
This is a short, known-correct source file. Run it through your syntax highlighter, linter, formatter, tree-sitter grammar, or parser, and open it in the in-browser editor to tweak and re-download. Each snippet exercises comments, string escapes, literals, and language keywords.
Code examples
runghc hello.hsRelated files
- hsHaskell FoldHaskell foldl snippet for AST and highlighter tests.
- hsHaskell MaybeHaskell Maybe pattern matching — realistic small module.
- hsHaskell Typeclass SAMPLEHaskell Typeclass SAMPLE for Wave G language-tooling coverage.
- cC — Hello WorldThe classic hello-world in C — an include, main, and printf — for testing highlighters, C compilers, and parsers against the canonical first program.
- cC — 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.
- cC StructC struct SAMPLE for clangd / highlighter fixtures.
Generated by generation/code_wave_g.py. Free for any use, no attribution required — license.