a row operation that will form a vector of the first match of a pattern.

a row operation that will form a vector of the first match of a pattern.

icd_first_valid_regex(data, colvec, pattern)

Arguments

data	input data
colvec	selected columns to match
pattern	the pattern to match

Value

return the vector of the matched characters with NA for a no match

Examples

dat <- data.frame(x1 = letters[1:3], x2 = c("d", "a", "e"))
library(dplyr)
library(purrr)
dat %>% mutate(x3 = icd_first_valid_regex(., colvec = c(1:2), pattern = "a"))
#>   x1 x2   x3
#> 1  a  d    a
#> 2  b  a    a
#> 3  c  e <NA>