The history is open for all to see. E.g. from the NEWS file (ONEWS in
pre-2.12.0) entry for R 2.4.0
o There is a new primitive seq.int() which is slightly more
restricted than seq() but often very much faster, and new
primitives seq_along() and seq_len() which are faster st
I wonder what is the history of "seq" and "seq.int"?
>From "help(seq)", one reads that "'seq.int' is an internal generic
which can be much faster but has a few restrictions". And indeed,
"seq.int(1,99,by=2)" is over 40 times faster than "seq(1,99,by=2)" in
a quick test I just did. This is not
