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[plt-scheme] Generating lists in Scheme

From: Noel Welsh (noelwelsh at gmail.com)
Date: Fri May 25 12:24:30 EDT 2007		 
unfold is the universal constructor.

Quasiquotation is handy in some cases:

 `(1 ,(+ 1 1) 3 4)  => (list 1 2 3 4)

BTW, your example

  (list-ec (: i 10) (identity i))

can be written

  (list-ec (: i 10) i)

N.
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