taeradan/recipe-cost
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supplementary calculations (cost per unit and cost per usage)

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This commit is contained in:
Yves Dubromelle
2016-05-21 02:20:37 +02:00
parent e6ab8cddc7
commit 04c07e87c1
1 changed files with 10 additions and 8 deletions
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18
cout-recette.hs
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@@ -18,9 +18,11 @@ recipeCost (Recipe _ bom _ _) = sum . map ingredientCost $ bom
ingredientCost :: UsedIngredient -> Double
ingredientCost (UsedIngredient (Ingredient _ uCost) qtt) = uCost * qtt
prixLitre prixTotal quantiteLessive = prixTotal / quantiteLessive
unitCost :: Recipe -> Double -> Double
unitCost (Recipe _ _ qtt _) totalCost = totalCost / qtt
prixUtilisation prixTotal quantiteLessive = prixTotal / nombreUtilisations
useCost :: Recipe -> Double -> Double
useCost (Recipe _ _ _ uses) totalCost = totalCost / uses
eau = Ingredient "Eau" 0.003
savonMarseille = Ingredient "Savon de Marseille" 3.36
@@ -37,14 +39,14 @@ lessive = Recipe "Lessive"
2.5
30
quantiteLessive = 2.5
nombreUtilisations = 30
main = do
putStrLn "Calcul du coût des recettes\n"
putStrLn "* Lessive :"
print lessive
putStrLn $ " * Prix Total = " ++ show (recipeCost lessive) ++ "€"
-- putStrLn $ " * Prix au litre = " ++ show prixLitre ++ "€"
-- putStrLn $ " * Prix par utilisation = " ++ show prixUtilisation ++ "€"
let lessiveTotalCost = recipeCost lessive
lessiveUnitCost = unitCost lessive lessiveTotalCost
lessiveUseCost = useCost lessive lessiveTotalCost
putStrLn $ " * Prix Total = " ++ show lessiveTotalCost ++ "€"
putStrLn $ " * Prix au litre = " ++ show lessiveUnitCost ++ "€"
putStrLn $ " * Prix par utilisation = " ++ show lessiveUseCost ++ "€"