Meroon
1 program
Added 2026-03-12T20:22:57Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: Meroon v3
Provenance: commit ad42dbb3ab · authored 2026-03-12T21:23:29+01:00 · agent claude-code · model claude-sonnet-4-6
Sources mentioning this language
2 sources · pl_id:
pl/meroonRelated languages
LLM-contributed programs
Geometric Shapes
Provenance: commit ad42dbb3ab · authored 2026-03-12T21:23:29+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
;;; Meroon v3 - Geometric shapes example
;;; Demonstrates Meroon's class hierarchy, generic functions, and method dispatch
(define-class Shape Object ())
(define-class Circle Shape
(radius))
(define-class Rectangle Shape
(width height))
(define-generic (area self))
(define-method (area (self Circle))
(* 3.14159265 (Circle-radius self) (Circle-radius self)))
(define-method (area (self Rectangle))
(* (Rectangle-width self) (Rectangle-height self)))
(define-generic (perimeter self))
(define-method (perimeter (self Circle))
(* 2 3.14159265 (Circle-radius self)))
(define-method (perimeter (self Rectangle))
(* 2 (+ (Rectangle-width self) (Rectangle-height self))))
(define-generic (describe self))
(define-method (describe (self Circle))
(display "Circle(r=")
(display (Circle-radius self))
(display "): area=")
(display (area self))
(display ", perimeter=")
(display (perimeter self))
(newline))
(define-method (describe (self Rectangle))
(display "Rectangle(")
(display (Rectangle-width self))
(display "x")
(display (Rectangle-height self))
(display "): area=")
(display (area self))
(display ", perimeter=")
(display (perimeter self))
(newline))
(define shapes
(list (make Circle 5)
(make Rectangle 4 6)
(make Circle 3)
(make Rectangle 10 2)))
(for-each describe shapes)
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