This commit is contained in:
Tom Marble 2015-06-15 02:08:07 +00:00
commit 1aa1a10d19
3 changed files with 16 additions and 18 deletions

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@ -24,13 +24,13 @@
(= __ (not (= 1 nil))) (= __ (not (= 1 nil)))
"Strings, and keywords, and symbols: oh my!" "Strings, and keywords, and symbols: oh my!"
(= __ (= "foo" :foo 'foo)) (= __ (= "hello" :hello 'hello))
"Make a keyword with your keyboard" "Make a keyword with your keyboard"
(= :foo (keyword __)) (= :hello (keyword __))
"Symbolism is all around us" "Symbolism is all around us"
(= 'foo (symbol __)) (= 'hello (symbol __))
"When things cannot be equal, they must be different" "When things cannot be equal, they must be different"
(not= :fill-in-the-blank __)) (not= :fill-in-the-blank __))

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@ -1,14 +1,12 @@
(ns koans.07-conditionals (ns koans.07-conditionals
(:require [koan-engine.core :refer :all])) (:require [koan-engine.core :refer :all]))
(defn explain-defcon-level [exercise-term] (defn explain-exercise-velocity [exercise-term]
(case exercise-term (case exercise-term
:fade-out :you-and-what-army :bicycling "pretty fast"
:double-take :call-me-when-its-important :jogging "not super fast"
:round-house :o-rly :walking "not fast at all"
:fast-pace :thats-pretty-bad "is that even exercise?"))
:cocked-pistol :sirens
:say-what?))
(meditations (meditations
"You will face many decisions" "You will face many decisions"
@ -40,10 +38,10 @@
'doom 'doom
'more-doom)) 'more-doom))
"In case of emergency, sound the alarms" "In case of emergency, go fast"
(= :sirens (= "pretty fast"
(explain-defcon-level __)) (explain-exercise-velocity __))
"But admit it when you don't know what to do" "But admit it when you don't know what to do"
(= __ (= __
(explain-defcon-level :yo-mama))) (explain-exercise-velocity :watching-tv)))

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@ -19,20 +19,20 @@
"You can also group by a primary key" "You can also group by a primary key"
(= __ (= __
(group-by :id [{:id 1 :name "Bob"} (group-by :id [{:id 1 :name "Bob"}
{:id 2 :name "Mike"} {:id 2 :name "Jennifer"}
{:id 1 :last-name "Smith"} ])) {:id 1 :last-name "Smith"} ]))
"But be careful when you group by non-required key" "But be careful when you group by non-required key"
(= {"Bob" [{:name "Bob" :id 1}] (= {"Bob" [{:name "Bob" :id 1}]
"Mike" [{:name "Mike" :id 2}] "Jennifer" [{:name "Jennifer" :id 2}]
__ [{:last-name "Smith" :id 1}]} __ [{:last-name "Smith" :id 1}]}
(group-by :name [{:id 1 :name "Bob"} (group-by :name [{:id 1 :name "Bob"}
{:id 2 :name "Mike"} {:id 2 :name "Jennifer"}
{:id 1 :last-name "Smith"}])) {:id 1 :last-name "Smith"}]))
"The true power of group-by comes with custom functions" "The true power of group-by comes with custom functions"
(= __ (= __
(group-by #(if (:bad %) :naughty-list :nice-list) (group-by #(if (:bad %) :naughty-list :nice-list)
[{:name "Jimmy" :bad true} [{:name "Jimmy" :bad true}
{:name "Jack" :bad false} {:name "Anna" :bad false}
{:name "Joe" :bad true}]))) {:name "Joe" :bad true}])))