Does this help: > #lang racket > > (define-namespace-anchor top) > > (parameterize ((current-namespace (namespace-anchor->namespace top))) > (eval '(define x 10)) > (namespace-variable-value 'x))
eval takes a namespace and you need to supply it explicitly (as an argument) or implicitly (via a parameter setting). On Nov 17, 2012, at 1:06 AM, Monica Tomson wrote: > Hi, > > When I use eval on an S-Expression, where there are something like (define > len (...)), racket screams at me define: not allowed in an expression context > in: (define len (make-length 10)) > > My questions are: > > How to make eval work on definition? > If eval is not designed to work on definitions, then is there some > workarounds that can make it work? > I appreciate any help! > > Thanks, > > Monica > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users
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____________________ Racket Users list: http://lists.racket-lang.org/users
