Hello,
On Dec 18, 5:49 am, Chouser <[email protected]> wrote:
> Which leads me to this, though it fails for reasons that escape me:
> (defn enc[s e](apply str(map`{~@(take-nth 2 e)}s)))
This one maybe fails because ~@ is a reader form that needs to expand
at compile time.
So if at compile time, e is not known (e.g. if e refers to a
function's argument), it fails.
But maybe, during the tests, e was bound to a literal string (and thus
usable at compile to for the expansion).
> But here's a form that works, oddly, and still manages to shave off a
> couple chars:
>
> (defn enc[s e](apply str(map`{0~@(cons 0(take-nth 2 e))}s)))
>
> --Chouser
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