Constructs a Verbal Expression

Source: R/constructor.R

Add this to the beginning of every verbal expression chain. This simply returns an empty character vector so that the next step in the chain can provide a value without explicitly writing value = "blah".

rx()

Examples

rx()
#> character(0)

# this
rx() %>%
  rx_find("cat") %>%
  rx_anything() %>%
  rx_find("dog")
#> [1] "(cat)(.*)(dog)"

# instead of
rx_find(value = "cat") %>%
  rx_anything() %>%
  rx_find("dog")
#> [1] "(cat)(.*)(dog)"