Right package:Cabal-syntax

O(V + V'). Right-biased union, preferring entries from the second map when conflicts occur. nodeKey x = nodeKey (f x).

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A right-biased version of listUnion. Example:

>>> listUnion [1,2,3,4,3] [2,1,1]
[1,2,3,4,3]

>>> listUnionRight [1,2,3,4,3] [2,1,1]
[4,3,2,1,1]

A right-biased version of ordNub. Example:

>>> ordNub [1,2,1] :: [Int]
[1,2]

>>> ordNubRight [1,2,1] :: [Int]
[2,1]