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What is the difference between :: and #:: in Scala? What is the difference between ::: and #::: in Scala?
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Answer / Arnab Ghosh
[":: (cons) and #:: (reverse cons) are used for appending elements to lists. The difference is that :: places the element at the head of the list, while #:: places it at the tail. ::: and #::: concatenate two lists with :: and #:: respectively, but they do not reverse the order as their counterparts."]
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