fork download
copy 
  1. test_str <- "Made out of wood, a book can contain many pages that are used to transmit information."
  2.  
  3. my_regex <- "(?i)(?=(\\b(?:(?:\\w+\\W+){5}|^(?:\\w+\\W+){0,4})(?:\\bbooks?|\\bpages?)\\b(?:(?:\\W+\\w+){5}|(?:\\W+\\w+){0,4}$)))"
  4.  
  5. m <- gregexpr(my_regex, test_str, perl=TRUE)
  6. m <- lapply(m, function(i) {
  7.        attr(i, "match.length") <- attr(i, "capture.length")
  8.        i
  9.      })
  10. regmatches(test_str, m)
Success #stdin #stdout 0.26s 39448KB
comments ()
stdin
copy 
Standard input is empty
stdout
copy 
[[1]]
[1] "Made out of wood, a book can contain many pages that"   
[2] "a book can contain many pages that are used to transmit"
https://ideone.com/wZPdd2
language:
R (R 3.5.2)
created:
1 year ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!