Split Character String Using Only Last Delimiter in r

Question

I have a character variable that I would like to split into 2 variables based on a \"-\" delimiter, however, I would only like to split based on the last delimiter as there

Answer 1

You can also use a negative lookahead:

df <- tibble(input = c("foo - bar", "hey-now-man", "say-now-girl", "fine-now"))

df %>% 
    separate(input, into = c("output1", "output2"), sep = "\\-(?!.*-)", remove = FALSE)

Refs:

[1] https://frightanic.com/software-development/regex-match-last-occurrence/

[2] https://www.regular-expressions.info/lookaround.html