[plt-scheme] cstruct and null pointer

From: Jon Rafkind (workmin at ccs.neu.edu)
Date: Sat Oct 20 13:03:33 EDT 2007

> (define/provide mysql-fetch-field
>     (get-ffi-obj "mysql_fetch_field" libmysqlclient (_fun
> _mysql-result -> _mysql-field-pointer)))

_mysql-field-pointer/null


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