It's a hash slice assignment (in other words, it's not a hash, it is an array). Basically you're saying, here is a list of keys and for each of these keys assign these values (since 'keys' and 'values' return lists). I can't find any particular documentation on it, but it does work :)

In reply to Re: recursive hash layer removal question by Transient
in thread recursive hash layer removal question by wertert

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