[R] dataframe without repetition

[Bruno Cutayar]

Hello,
with a data.frame like this :
 > toto <- 
data.frame(id=c("id1","id1","id2","id3","id3","id3"),dpt=c("13","13","34","30","30","30"))
 > toto
   id dpt
1 id1  13
2 id1  13
3 id2  34
4 id3  30
5 id3  30
6 id3  30

what is the most efficient ways to obtain :
   id dpt
1 id1  13
2 id2  34
3 id3  30
?
thanks in advance for your reply
Bruno



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