R count times word appears in element of list

Question

I have a list comprised of words.

> head(splitWords2)
[[1]]
 [1] \"Some\"        \"additional\"  \"information\" \"that\"        \"we\"          \"would\"         


        

Answer 1

You could always stick to grep in the base package for simplicity...

LinesList <- list ( "1"=letters[1:10], "2"=rep(letters[1:3],3) )
CountsA <- grep("[a]", LinesList) # find 'a' in each element of list
length(CountsA) <- length(LinesList) # gives NAs if not counted
data.frame( lineNum = names(LinesList), count = CountsA)