I wonder, if we have List.insert and List.union, why no List.merge (:: Ord a =>
[a] -> [a] -> [a]) and no List.minus ? These seem to be pretty general
Brief look into haskell-prime-report/list.html reveals nothing.
Could we please have them?
On the wider perspective, is their a way to declare an /ordered/ list on the
type level (e.g. [1,2,3] would be one, but not [2,3,1])? Non-decreasing lists?
Cyclical, or of certain length? What are such types called?
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