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‘seq.Date(from, to, by, ....)’ and ‘seq.POSIXt(..)’ now also work when ‘from’ is missing and sufficient further arguments are provided, thanks to Michael Chirico's report, patch proposal in PR#17672 and ‘R Dev Day’ contributions.
The ‘Date’ method also works for ‘seq(from, to)’, when ‘by’ is missing and now defaults to ‘"1 days"’.
Both methods return or keep internal type ‘"integer"’ more consistently now. Also, ‘as.POSIXct({})’ is internally integer.
Strict R headers are now the default. This removes the legacy definitions of ‘PI’, ‘Calloc’, ‘Realloc’ and ‘Free’: use ‘M_PI’, ‘R_Calloc’, ‘R_Realloc’ or ‘R_Free’ instead.
_Pro tem_ ‘STRICT_R_HEADERS’ is defined in header ‘R_ext/RS.h’ if not already defined. This is not used in R itself and will be removed before release.