On 5/7/14, 5:21 AM, Therneau, Terry M., Ph.D. wrote:
Hadley asked about the Blue book; my shelf still has the earlier brown book
Becker and Chambers, 1984, S: An interactive environment for data
analysis and graphics.
Historically interesting, but there was never a guarantee that Version 3
of S (the "blue book") was back-compatible with earlier versions. We
gave users some help in "getting on the road" to converting, that was
all (see Appendix 4 to the blue book).
For that one brief moment, we felt free to innovate.
John
The manual page for precedence is
$ component select
%x special operator
- unary minus
: sequence operator
^ ** exponentiation
* / mult/div
+ - add/sub
< > <= >= == != logical
! not
& | and/or
<- -> assignment
Terry Therneau
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