Discussion of Common Lisp
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findinglisp
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by findinglisp » Mon May 11, 2009 8:48 am
#. evaluates the next form immediately as it is read (in the reader). The reader returns the result of the evaluation instead of the form itself. It's useful when a form can't be strictly constant, because it's environmentally dependent, for instance, but yet you want it constant after it's read.