On 2011-02-07 00:18, Joel wrote:
Hi
Im confused by one thing, and if someone can explain it I would be a happy
rev(strsplit("hej",NULL))
[[1]]
[1] "h" "e" "j"
lapply(strsplit("hej",NULL),rev)
[[1]]
[1] "j" "e" "h"
Why dossent the first one work? What is it in R that "fails" so to say that
you need to use lapply for it to get the correct output.
See if this helps to see what's happening in the first case:
L <- list(fruit=c("apple", "orange"))
L
rev(L)
L <- list(fruit=c("apple", "orange"), nuts=c("pecan", "almond"))
L
rev(L)
lapply(L, rev)
For your second case, lapply() applies FUN to the pieces
of the list.
Peter Ehlers
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