str_rank()? #353
Description
R base as sorting, ordering and ranking functions. Each fits a different purpose.
As far as I can see, stringr (and stringi) don't have ranking versions of their sorting and ordering functions.
One motivation could be obtaining natural sorting in dplyr:
library(dplyr, warn.conflicts = FALSE)
foo <- tibble(x = c("A100", "B3", "A1", "A2", "A10", "A11", "A100C", "AA9"))
foo %>%
arrange(x)
#> # A tibble: 8 x 1
#> x
#> <chr>
#> 1 A1
#> 2 A10
#> 3 A100
#> 4 A100C
#> 5 A11
#> 6 A2
#> 7 AA9
#> 8 B3
str_rank <- function(x, ...) match(x, stringr::str_sort(x, ...))
foo %>%
arrange(str_rank(x, numeric = TRUE))
#> # A tibble: 8 x 1
#> x
#> <chr>
#> 1 A1
#> 2 A2
#> 3 A10
#> 4 A11
#> 5 A100
#> 6 A100C
#> 7 AA9
#> 8 B3Created on 2020-11-18 by the reprex package (v0.3.0)
Not sure this is needed in stringi since people using stringi should be capable to define, with no difficulty, a little function like the one above on the fly, but with stringr aiming at being more accessible it seems to make sense to me...