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A general description is here.
R now provides a simple native froward pipe syntax ‘|>’. The simple form of the forward pipe inserts the left-hand side as the first argument in the right-hand side call. A syntax is also provided for passing the left-hand side as an argument other than the first. The pipe implementation as a syntax transformation was motivated by suggestions from Jim Hester and Lionel Henry. This feature is experimental and may change prior to release.
‘identical(x,y)’ is no longer true for differing ‘DOTSXP’ objects, fixing PR#18032.