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Matthew Davidson 2023-01-04 16:47:10 +01:00
parent 2f1fa3cc3b
commit ce7411159d
1 changed files with 5 additions and 5 deletions
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10
src/koans/26_transducers.clj
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@ -10,21 +10,21 @@
(meditations (meditations
"A sequence operation with only one argument often returns a transducer" "A sequence operation with only one argument often returns a transducer"
(= __ (= '(2 3 4)
(sequence example-transducer [1 2 3])) (sequence example-transducer [1 2 3]))
"Consider that sequence operations can be composed as transducers" "Consider that sequence operations can be composed as transducers"
(= __ (= [2 4]
(transduce transforms conj [1 2 3])) (transduce transforms conj [1 2 3]))
"We can do this eagerly" "We can do this eagerly"
(= __ (= [2 4]
(into [] transforms [1 2 3])) (into [] transforms [1 2 3]))
"Or lazily" "Or lazily"
(= __ (= '(2 4)
(sequence transforms [1 2 3])) (sequence transforms [1 2 3]))
"The transduce function can combine mapping and reduction" "The transduce function can combine mapping and reduction"
(= __ (= 6
(transduce transforms + [1 2 3]))) (transduce transforms + [1 2 3])))