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26 lines
857 B
Clojure
26 lines
857 B
Clojure
(ns koans.18-quote
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(:require [koan-engine.core :refer :all]))
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(meditations
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"Wrap a quote around a list to suppress evaluation"
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(= (quote (1 2 3 4 5)) [ 1 2 3 4 5 ])
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"There is a shortcut too!"
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(= (quote (1 2 3 4 5)) '(1 2 3 4 5))
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"You can quote symbols as well as lists... without evaluation!"
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(= 'age (let [age 9] (quote age)))
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"You can use a literal list as a data collection without having Clojure try to call a function"
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(= (cons 1 (quote (2 3))) (list 1 2 3) (cons 1 [2 3]))
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"The quote affects all of its arguments, not just the top level"
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(= (list 1 (quote (+ 2 3))) '(1 (+ 2 3)))
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"Syntax-quote (`) acts similarly to the normal quote"
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(= (list 1 2 3) `(1 2 3) '(1 2 3))
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"Unquote (~) within a syntax-quoted expression lets you mark specific expressions as requiring evaluation"
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(= (list 1 5) `(1 ~(+ 2 3)) '(1 5)))
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