More likely it has to do with simply naming many of the intermediate
results in a calculation. That often results in long let bindings with
short let bodies. I've written many a function that's basically
(defn foo [x]
(let [stuff
more stuff
yet more stuff
res (Thingy. args)]
res))
or something close to that, or with a one-liner body of (Thingy. args) or
whatever instead of first naming that "res". It's useful to make long and
intricate chains of operations more readable than a very long nested sexp
(and unlike the threading macros doesn't care where each result feeds into
the next operation, and does let each one have its own name that helps
document what it is or what it's for) and it's especially useful if a
single intermediate result is used in more than one place subsequently.
On Thu, Sep 5, 2013 at 2:05 AM, Kuba Roth <kuba.r...@gmail.com> wrote:
> I'm currently working with tree-seq function from clojure.core and there
> is one thing I'm struggling to understand... Could you please explain why
> pretty much all of the body of the function sits within 'let binding' and
> not in the 'let body' where only (walk root) is placed?
> Has it something to do with tail recursion?
>
> Thank you,
> Kuba
>
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