precedence (was 'historical NA question')

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