My answer to most of these questions is often "write it once, stuff it in a
function, and forget about it".
Really though I often see this as a data-modeling and naming problem. For
example, you could go and write a `(update-cells cell-list f & args)` that
wraps custom logic for finding and manipulating cells.
In addition, think about ways to flatten the structure. It's a little hard
to figure out what you're trying to do here, but in general try to keep
data one or two layers deep, not only is it easier to manipulate, but it's
also easier to reason about. Once you get 3-4 layers deep in hashmaps, it
gets a bit messy, regardless of the tools you're using.
On Tue, Oct 10, 2017 at 2:18 PM, Rob Nikander <rob.nikan...@gmail.com>
wrote:
> Hi,
>
> Say I have a map like this:
>
> (def m {:qs [{:nums [3 1 2]} {:nums [7 4]}]})
>
> I want to transform each number with a function (say, `inc`). I imagine
> something like this:
>
> (update-in m [:qs * :cell-fns] #(map inc %))
> ; or
> (update-in m [:qs * :cell-fns *] inc)
>
>
> But of course you can't write that. The following code works, but I don't
> like reading it:
>
> (update m :qs
> (fn [qs]
> (mapv
> (fn [q]
> (update q :nums #(mapv inc %)))
> qs)))
> => {:qs [{:nums [4 2 3]} {:nums [8 5]}]}
>
> Is there an idiomatic way to do this, that looks more like the shorter
> `update-in` idea?
>
> Rob
>
>
>
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