This release is mostly bug fixes, but there are a couple of new features you might care out.
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There are three new datasets,
fruit
,words
andsentences
, to help you practice your regular expression skills:str_subset(fruit, "(..)\\1") #> [1] "banana" "coconut" "cucumber" "jujube" "papaya" #> [6] "salal berry" head(words) #> [1] "a" "able" "about" "absolute" "accept" "account" sentences[1] #> [1] "The birch canoe slid on the smooth planks."
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More functions work with
boundary()
:str_detect()
andstr_subset()
can detect boundaries, andstr_extract()
andstr_extract_all()
pull out the components between boundaries. This is particularly useful if you want to extract logical constructs like words or sentences.x <- "This is harder than you might expect, e.g. punctuation!" x %>% str_extract_all(boundary("word")) %>% .[[1]] #> [1] "This" "is" "harder" "than" "you" #> [6] "might" "expect" "e.g" "punctuation" x %>% str_extract(boundary("sentence")) #> [1] "This is harder than you might expect, e.g. punctuation!"
str_view()
andstr_view_all()
create HTML widgets that display regular expression matches. This is particularly useful for teaching.