What price is higher then using map or grep? I don't see it. The only iteration that is done twice is over the keys of the result-set which is necessary because of autovivification. The fact that missing values become undefined instead of non-existent is actually something that I would prefer in case the filter asked for it.

2018-06-09 Athanasius restored node content

In reply to Re^6: A more elegant way to filter a nested hash? by Veltro
in thread A more elegant way to filter a nested hash? by jimpudar

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