I have a feeling there's a function like (fn [xs] (reductions conj [] xs)) somewhere in the standard lib, but I can't find it. Am I mistaken?

isn't this like (into [] xs) ? nevermind

@ghadi I plan on making heavy use of iteration. What’s your recommended pattern for handling failures that happen when using iteration to call external APIs? Have you implemented retry logic with iteration for failed calls?

@stephenmhopper I think it makes sense to put retry logic in either the step! or within the caller of iteration

I have a couple usages with the cognitect aws-api client where the :some? arg looks for an anomaly

but, in that case, if :some? is false on an anomaly, the anomaly will not be included in the output

you can also include the anomaly in the output by making it a valid output in :some? , then having the :kf not proceed to the next step upon an anomaly

in that scenario, into + halt-when + iteration works nicely together

note that now with a expression like (into [] (halt-when ...) coll) , it can return a non-vector ❗ because halt-when is in charge of the return value

in the example above aws/invoke does retry automatically. It will return an anomaly if the retry policy is exhausted