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- struct Material {
- diameter: Length,
- density: MassDensity,
- price: Money / Mass,
- }
- let PLA = Material {
- diameter: 1.75 mm,
- density: 1.27 g/cm^3,
- price: 16.99 €/kg,
- }
- fn print_cost(material: Material, mass: Mass) -> Money = material.price × mass
- fn filament_length(material: Material, mass: Mass) -> Length = volume / cross_section -> meter
- where r = material.diameter / 2
- and cross_section: Area = π r²
- and volume: Volume = mass / material.density
- # Print parameters
- let mass_model = 80 g
- let material = PLA
- print("Mass of model: {mass_model}")
- print("Filament length: {filament_length(material, mass_model):.2}")
- print("Cost of model: {print_cost(material, mass_model):.2}")
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