2009/12/2 Uwe Ligges <ligges at statistik.tu-dortmund.de>:
Peng Yu wrote:
Suppose I run the following code in the R session. At the last prompt '>', I want to retrieve the second command (staring with 'y'). But I have to type up arrow many times, which is very inconvenient. I'm wondering if there is a way to configure R to skip block of code in the history?
I don't think so, but since you are writing your code in an editor (hopefully), it is probably easier to submit the relevant part of the code from the editor to R again.
It would be more convenient if there is a way to roll back a block of code in the history. Could the development team add this feature to the to-do list?
x=list(a=c(1,2),b=c(3,4,5)) y=list(a=c(1,2),b=c(3,4,5)) lapply(seq(along=x)
+ ? ? ,function(i){
+ ? ? ? cbind(
+ ? ? ? ? ? x[[i]]
+ ? ? ? ? ? ,y[[i]]
+ ? ? ? ? ? )
+ ? ? }
+ ? ? )
[[1]]
? ? [,1] [,2]
[1,] ? ?1 ? ?1
[2,] ? ?2 ? ?2
[[2]]
? ? [,1] [,2]
[1,] ? ?3 ? ?3
[2,] ? ?4 ? ?4
[3,] ? ?5 ? ?5
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