[racket] (if ...) form without an else

From: Asumu Takikawa (asumu at ccs.neu.edu)
Date: Wed Apr 11 23:51:51 EDT 2012

On 2012-04-11 11:42:20 -0700, lothar atheling wrote:
> usually an (if ...) form without an else part does not cause an error.
> but sometimes it does, as the following shows:

In what situation does a single-branch `if` succeed for you?

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