one fable-low hijack cell
pair lean / reasonml
envelope code_haskell_alt
ordering AB
effort low
Haskell alternative operator — '{X} <|> {Y}' (Alternative class).
verdictpicked lean (first-offered)
· classifierA
· tiernone
response (200 chars)
# Lean vs ReasonML
Two very different languages — here's a quick comparison:
## Lean
- **Purpose**: Theorem prover / dependently-typed programming language (Lean 4 is also a general-purpose language
neighbors