Have you looked at Specter? I actually don't know if it uses transients
under the hood or not, or if you can make it do so, but it seems like a
good fit for the data manipulation problem, at least.
On 3 June 2016 at 14:43, Mark Engelberg <mark.engelb...@gmail.com> wrote:
> Let's say I have an object represented by a series of nested maps:
>
> {:a {:b 1} :c {:d 2}}
>
> and now I'm going to be making a whole slew of edits to the submaps.
>
> To do this efficiently, I need to make all the levels of the map
> transients, because any update to the inner map also updates the outer map:
>
> (transient {:a (transient {:b 1}), :c (transient {:d 2})})
>
> and then at the end I need to do a nested persistent! operation.
>
> However, there aren't good facilities for dealing with nested transients,
> for example, there's no assoc!-in. So it's a real pain to work with.
>
> Has anyone dealt with this already, and developed a suite of tools for
> working with nested transients, or other techniques for making batch
> updates efficient for deeply nested objects?
>
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