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specter 2025-01-27
Andrew Wilcox 2025-01-27T02:18:14.569749Z
Is there a way to use compact with transform, or otherwise cause a key in a map to be removed if the result of transforming a map value is an empty collection?
(s/transform [:b] #(disj % 1 2 3) {:a #{5 6} :b #{2 3}})
{:a #{6 5}, :b #{}}
(s/transform <something?> #(disj % 1 2 3) {:a #{5 6} :b #{2 3}})
{:a #{6 5}}
nathanmarz 2025-01-27T03:54:28.370309Z
you just need compact wrapped around the navigator on the data structure
nathanmarz 2025-01-27T03:54:53.026999Z
since your transform fn is handling everything internally, you can do it like this: (transform [:b (compact STAY)] #(disj % 1 2 3) {:a #{5 6} :b #{2 3}})
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