learning-sicp

My embarrassing half assed SICP run.
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one-item-in-deque.scm (317B)

      1 (define-library (sicp solutions 3_23 one-item-in-deque)
      2   (import (scheme base))
      3 
      4   (import (sicp solutions 3_23 front-ptr))
      5 
      6   (export one-item-in-deque?)
      7 
      8   (begin
      9     (define (one-item-in-deque? deque)
     10       "Returns #t if there is one item in QUEUE, else returns #f. Raises an error if QUEUE is empty."
     11       )))