perl case convention with stringi

Asked Sep 01 '16 at 18:17

Active Sep 01 '16 at 18:17

Viewed 94 times

I can use the perl argument in gsub to change the case of individual subexpressions. For example if I want to find a lower case i followed by and apostrophe or end of string (redundant here) I could do:

gsub("(\\bi(\\b|'))", "\\U\\1", "i am able to move do it as i'm going to.", perl = TRUE)

## [1] "I am able to move do it as I'm going to."

Notice I and I'm are caps but it is not.

How can I do the same thing (is it possible) using stringi given that base and stringi use different regex engines.

stri_replace_all_regex("i am able to move do it as i'm going to.", "(\\bi(\\b|'))", "\\U$1")

## [1] "1 am able to move do it as 1'm going to."

asked Sep 01 '16 at 18:17

Tyler Rinker

108,132
65
322
519

I don't think you can, at least not with a single function call. Is this just curiosity or is `gsub` not good/fast/... enough for you? – eddi Sep 01 '16 at 19:25
2

https://github.com/gagolews/stringi/issues/131 does this help? – Chris Sep 01 '16 at 19:58
@eddi More a curiosity as I like to do everything in stringi for its uniform inputs. – Tyler Rinker Sep 01 '16 at 20:23
@Chris I think so. I believe that's the answer. – Tyler Rinker Sep 01 '16 at 20:43

perl case convention with stringi

0 Answers0