[R] abbreviate

[Gabor Grothendieck]

The $ replacement function does not work with pattern
matching -- only the $ operator on the right hand side does, e.g.

> irish <- head(iris)
> irish$S <- 1
> irish$Species <- 2
> irish
  Sepal.Length Sepal.Width Petal.Length Petal.Width Species S
1          5.1         3.5          1.4         0.2       2 1
2          4.9         3.0          1.4         0.2       2 1
3          4.7         3.2          1.3         0.2       2 1
4          4.6         3.1          1.5         0.2       2 1
5          5.0         3.6          1.4         0.2       2 1
6          5.4         3.9          1.7         0.4       2 1


On 6/16/05, Christoph Buser <buser at stat.math.ethz.ch> wrote:
> Down to 17 if we carry on your idea using the matching property
> on the left hand side, too. :-)
> 
> p$h=pmax(p$h,p$s)
> 
> 
> Gabor Grothendieck writes:
>  > Agree that this definitely should be pursued. :)  In fact,
>  > we can shave off several keystrokes by
>  >
>  > - replacing p[[1]] with p[1] on the left hand side
>  > - p$high and p$settle with p$h and p$s on the right hand
>  >   side (which makes use of the matching property of $)
>  > - '=' instead of '<-'
>  > - remove all the spaces
>  >
>  > This gets it down to 18 characters:
>  >
>  > p[1]=pmax(p$h,p$s)
>  >
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