You could zip the original list to its own tail.
On Fri, Jan 13, 2017 at 4:09 PM, Graham Gill
Sorry, I mean, "groups together consecutive and equal terms, that occur sequentially". Examples speak louder than general descriptions!
On 13-Jan-2017 6:43 PM, Graham Gill wrote:
Here's one that does what you want, doesn't require the list to be sorted, and groups together consecutive and equal terms:
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