My guess is that `merge` has an invariant "if all args are nil, return nil",
making calls to `seq` "contagious" from args to return value.
=> (merge (seq {}) (seq {}))
nil
Just a guess though.
Thanks,
Ambrose
On Thu, Aug 30, 2012 at 12:18 AM, Brian Marick <[email protected]> wrote:
> Why does `(merge)` return nil? I would have expected it to return the unit
> ({}) by analogy with things like this:
>
> (+) => 0
> (*) => 1
>
> -----
> Brian Marick, Artisanal Labrador
> Contract programming in Ruby and Clojure
> Occasional consulting on Agile
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