Jon Zadra wrote:
Hi,
There is an object, ".Last.value" to which the result of the most
recent evaluation is assigned. This is similar to "ans" in Matlab.
In Matlab "ans" can be very useful and time-saving, but typing the
larger R version is somewhat clunky and takes away from the usefulness.
Is it possible to reassign '.Last.value' to something simpler, like
'ans' ?
I'm aware of this thread:
http://tolstoy.newcastle.edu.au/R/help/00b/1598.html, where a function
such as:
ans <- function() {
return(.Last.value)
}
is discussed, however it would be nice not to have to type the ()
every time. Is it possible to change something in R to essentially
replace the location where ".Last.value" has the recent evaluation
assigned to it with 'ans' instead? Or might it be possible to make an
object 'ans' that updates its value from ".Last.value" each time it is
called?
Luke will probably want to murder anyone trying these silly tricks with
nonstandard evaluation, but here's one way:
> .<-structure(0,class="ans")
> "!.ans"<-function(e1,e2).Last.value
> rnorm(10)
[1] -1.16906125 0.06507857 0.08435672 -0.95936948 -1.46486146 1.01636505
[7] -0.54111611 -0.21457016 0.35078126 0.67347097
> !.
[1] -1.16906125 0.06507857 0.08435672 -0.95936948 -1.46486146 1.01636505
[7] -0.54111611 -0.21457016 0.35078126 0.67347097
However, I'd settle for .La<TAB>v<TAB> ....
--
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c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
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