On 27 October 2014 13:45, Roelof Wobben <rwob...@hotmail.com> wrote:
> Hello,
>
> I have this "facts".
>
> (def octavia {:name "Octavia E. Butler"
> :birth-year 1947
> :death-year 2006})
>
>
So you've assigned the var "octavia" to the data structure:
{:death-year 2006, :name "Octavia E. Butler", :birth-year 1947}
(def wild-seed {:title "Wild Seed", :authors [octavia]})
>
>
Here you've assigned the var "wild-seed" to:
{:title "Wild Seed", :authors [octavia]}
Which is the same as:
{:title "Wild Seed", :authors [{:death-year 2006, :name "Octavia E.
Butler", :birth-year 1947}]}
So I thought when I do this :
>
> (defn old-book->new-book [book]
> (get book :authors))
>
> (old-book->new-book {:title "Wild Seed", :authors [octavia]})
>
>
Okay, so work through your code. You start with:
(old-book->new-book {:title "Wild Seed", :authors [octavia]})
Resolving this gets:
(get {:title "Wild Seed", :authors [octavia]} :authors)
Resolving this gets:
[octavia]
Which resolves to:
[{:death-year 2006, :name "Octavia E. Butler", :birth-year 1947}]
I'm not sure why you'd expect anything else. Did you not expect "octavia"
to resolve?
- James
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