[R] Extracting the first element of a list

Ross Darnell r.darnell at shrs.uq.edu.au
Wed Mar 27 01:00:46 CET 2002

Perhaps some kind person might show me the way to extract the first element of a list.

The example is

tmp <- c("A", "B C","BC D")

I want the first "word" from each of these elements, i.e. "A" ,"B" ,"BC" 

strsplit(tmp," ") returns

[1] "A"

[1] "B" "C"

[1] "BC" "D"

I have had no success in trying to extract the first element.

Of course there may be another way to get the same result.

Ross Darnell

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