testzugang/opposite_uniq

Last active December 16, 2015 02:59

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If in need for the opposite of "uniq" get only the duplicated entries in an array.

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opposite_uniq

	duplicate_keys = []
	all_keys.uniq.each do \|k\|
	count = all_keys.count(k)
	duplicate_keys << k if count > 1
	end

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