Join array elements depending on the element's index
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I have this array: [ 'here', 'are', 'some', '123', 'data' ]. I would like to join the elements before the'123' into a string and the elements after the '123' into another string to get these three strings:
arr.chunk{|e| (e =~ /\d{3}/) || false}.map{|a| a.last.join(" ")}# => ["here are some", "123", "data"] 0 0
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