[R] indexing

[Erik Iverson]

I find R books to be helpful for beginners.  There is a fairly
comprehensive list on the R web site, www.r-project.org.

Is this what you had in mind though?  Without example code, it's hard 
for me to tell exactly your situation.

test <- list(first = c("string1a", "string2a"), second = c("string1b",
"string2b"))
sapply(test, "[[", 1)

Best,
Erik Iverson

gbr0wn at comcast.net wrote:
> Is there an on-line source that explains index vectors?  I used
> 'strsplit' to generate a lengthy list of pairs of character vectors.
> I only want the first of each pair.  Brackets, double brackets, and
> '$' operator don't work [[alternative HTML version deleted]]
> 
> ______________________________________________ R-help at r-project.org
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> and provide commented, minimal, self-contained, reproducible code.