# NOT RUN {
string <- "abxxcdxxdexxfgxxh"
str_after_nth(string, "xx", 3)
str_before_nth(string, "e", 1:2)
str_before_nth(string, "xx", -3)
str_before_nth(string, ".", -3)
str_before_nth(rep(string, 2), "..x", -3)
str_before_first(string, "d")
str_before_last(string, "x")
string <- c("abc", "xyz.zyx")
str_after_first(string, ".") # using regex
str_after_first(string, coll(".")) # using human matching
str_after_last(c("xy", "xz"), "x")
# }
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