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A general description is here.
‘approx()’, ‘spline()’, ‘splinefun()’ and ‘approxfun()’ also work for long vectors.
‘deparse()’ (and ‘dump()’) are more useful for S4 objects; ‘dput()’ now using the same internal C code (instead of its previous imperfect workaround R code). More user visibly, ‘dput()’, etc now print the ‘names()’ information only once, using the more readable ‘(tag = value)’ syntax. These functions got a new (partly experimental) control option via ‘.deparseOpts()’ ‘"nice_names"’ which when set (e.g. as part of ‘"all"’) also use the ‘(tag = value)’ syntax for atomic vectors.