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30 changes: 13 additions & 17 deletions Chapter04/Activity4.01/src/packt-clj/game_values.clj
Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
(ns packt-clj.game-values)


(def game-users
[{:id 9342
:username "speedy"
Expand Down Expand Up @@ -63,22 +62,19 @@
:experience-level 8
:status :active}])


(defn max-value-by-status [field status users]
(->>
users
;; step 1: use filter to only keep users who
;; have the status we are looking for
(filter #(= (:status %) status))
;; step 2: field is a keyword, so we can use it as
;; a function when calling map.
(map field)
;; step 3: use the apply max pattern, with a default
(apply max 0)))
(->> users
;; step 1: use filter to only keep users who
;; have the status we are looking for
(filter #(= (:status %) status))
;; step 2: field is a keyword, so we can use it as
;; a function when calling map.
(map field)
;; step 3: use the apply max pattern, with a default
(apply max 0)))

(defn min-value-by-status [field status users]
(->>
users
(filter #(= (:status %) status))
(map field)
(apply min 0)))
(->> users
(filter #(= (:status %) status))
(map field)
(apply min)))
2 changes: 1 addition & 1 deletion Chapter06/Exercise6.07/train_routes.clj
Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@
(= position destination) path

(get-in route-lookup [position destination])
(conj path destination)
[(conj path destination)]

:otherwise-we-search
(let [path-set (set path)
Expand Down