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    Answers and rating deltas for
    In Common Lisp, how to define a macro expanding to nothing (rather than `nil`)?
| Author | Votes | Δ | 
|---|---|---|
| sds | 8 | +0.44 | 
| Lars Brinkhoff | 3 | -3.51 | 
Last visited: Sep 14, 2014, 5:07:29 AM