Hi John,
Your solution is perfectly valid and optimal for the problem I
described above.
Unfortunately, I forgot to mention an additional constraint: sometimes I do:
(let [ foo (:some-selector @data-atom) ]
(swap! data-atom update-in [:other-selector] ... ))
which the -> doesn't quite work on, but my ugly hack above does resolve.
The problem being -- I want to update one part of the atom, but it
depends on another part of the atom.
I ended up with the following hack:
(defn tswap! [atm func]
(swap! atm
(fn [old]
(let [natm (atom old)]
(func natm)
@natm))))
On Sat, Feb 15, 2014 at 4:09 PM, John D. Hume <[email protected]> wrote:
> On Sat, Feb 15, 2014 at 6:04 PM, t x <[email protected]> wrote:
>>
>>
>> (defn what-I-want []
>> (with-atom some-atom
>> assoc-in ...
>> assoc-in ...
>> update-in ...))
>
>
> I often do something like this and don't find it too ugly:
> (swap! my-atom #(-> %
> (assoc-in [:k] v)
> (update-in [:k2] inc)
> ,,,))
>
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