Split sentence by words with regex in R -

i'm using (or i'd use) r extract information. have following sentence , i'd split. in end, i'd extract number 24.

here's have:

doc <- "hits  1 - 10 24"

and want extract number "24". know how extract number once can reduce sentence in "hits 1 - 10 from" , "24". tried using this:

n_docs <- unlist(str_split(key_n_docs, ".\\from"))[1]

but leaves me with: "hits 1 - 10" split works somehow, i'm interested in part after "from" not 1 before. appreciated!

if want extract single character string:

strsplit(key_n_docs, "from")[[1]][2]

or equivalent expression used @bastim (sorry saw answer after submitted mine)

unlist(strsplit(key_n_docs, "from"))[2]

if want extract vector of character strings:

sapply(strsplit(key_n_docs, "from"),`[`, 2)

And