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(ns aula3.exercicio | |
(:require [aula3.data :as data])) | |
;; escrever uma funcao que retorna a primeira compra do cliente dado o ID. | |
(defn get-first-shop-item | |
"Get the first shop item by ID." | |
[{:keys [compras]} id] | |
(get (compras id) 0)) | |
(comment | |
(get-first-shop-item data/mapa "0") | |
(get-first-shop-item data/mapa "2") | |
(get-first-shop-item data/mapa "1") | |
) | |
;; escrever uma funcao que retorna as compras de um cliente dado o ID. | |
(defn get-client-shops | |
"Get all the shops from a client by ID." | |
[{:keys [compras]} id] | |
(compras id)) | |
(comment | |
(get-client-shops data/mapa "0") | |
(get-client-shops data/mapa "3") | |
(get-client-shops data/mapa "4") | |
) | |
;; escrever uma funcao que adiciona a compra {:item "mesa" :valor 250} no vetor de compras de um cliente, dado o ID. Deve retornar o mapa inteiro. | |
(defn add-new-shop-item | |
"Add a new shop item in a shops list by ID." | |
[{:keys [compras] :as data} id new-shop] | |
(assoc-in data [:compras id] (conj (compras id) new-shop))) | |
(comment | |
(add-new-shop-item data/mapa "1" {:item "mesa" :valor 250}) | |
) | |
;; escrever uma funcao que da desconto de 10% para o primeiro item de compra do cliente dado o ID. Deve retornar o mapa inteiro | |
(defn add-discount-first-shop-item | |
"Add a 10% discount for the first shop item by the client ID." | |
[data id] | |
(update-in data [:compras id 0 :valor] #(* % 0.9))) | |
(comment | |
(add-discount-first-shop-item data/mapa "2") | |
(add-discount-first-shop-item data/mapa "1") | |
) |
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