Pairing adjacent list items in Haskell

Question

I have a chained list like

[\"root\", \"foo\", \"bar\", \"blah\"]

And I\'d like to convert it to a list of tuples, using adjacent pairs. Li

Answer 1

One possible solution:

pairs [] = []
pairs (x:[]) = []
pairs (x:y:zs) = (x, y) : pairs (y : zs)

Definitely not as small as yours, and can probably be optimized quite a bit.