17 lines
266 B
Racket
17 lines
266 B
Racket
#lang racket
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(require data/queue)
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(define queue (make-queue))
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(enqueue! queue 'black)
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(queue-empty? queue) ; #f
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(enqueue! queue 'red)
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(enqueue! queue 'green)
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(dequeue! queue) ; 'black
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(dequeue! queue) ; 'red
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(dequeue! queue) ; 'green
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(queue-empty? queue) ; #t
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