ds# inside the def is inside a ~() which means it's expected to exist
outside of the `
like:
(defmacro ...
(let [ds# "something]
`(def ~(... ds# ) ....
))
maybe try the let block be outside of the ` ? but that means you probably
need to use eval
It's funny I tried the same thing like you like 1 day ago here:
https://github.com/DeMLinkS/demlinks/commit/85219208007fff6e7a11fb579d7125c73a6dc597
by trying to put the let inside the ` but failed
On Sun, Feb 24, 2013 at 6:02 PM, Jim - FooBar(); <jimpil1...@gmail.com>wrote:
> Hi everyone,
>
> I cannot figure out for the life of me how to pass in an optional
> doc-string into a 'defsomething' macro and have it to work. If I hard-code
> it then it works just fine...
>
> (defmacro def-plus-doc [name & syms]
> `(def ~(with-meta name (assoc (meta name) :doc "HI!")) ~@syms)) ;;this
> will work just fine
>
> (defmacro def-plus-doc [name & syms] ;;slightly augmented to detect
> doc-string
> `(let [[doc# & syms# :as all#] (vector ~@syms)
> cs# (if (string? doc#) [syms# true] [all# false])
> ds# (if (second cs#) doc# "This workflow has not been
> documented...")]
> (def ~(with-meta name (assoc (meta name) :doc ds#)) ~@syms)))
>
> ;;fails with CompilerException java.lang.RuntimeException: Unable to
> resolve symbol: ds# in this context, compiling:(NO_SOURCE_PATH:5:**26)
>
> why is it so hard? I've been trying for almost 3 hours!!!! nothing seems
> to work... :(
>
> Jim
>
>
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Please correct me if I'm wrong or incomplete,
even if you think I'll subconsciously hate it.
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