We are happy to announce that stringr 1.4.0 is now on CRAN. stringr provides a cohesive set of functions designed to make working with strings as easy as possible. For a full list of changes, please see the release notes.
You can install the released version from CRAN:
install.packages("stringr")
library(stringr)
New functions
Thanks to the hard work of John Harmon at Tidyverse Developer Day, stringr has three new functions.
str_starts() and
str_ends() detect the presence or absence of patterns at the beginning or end of strings.
fruit <- c("apple", "banana", "pear", "pineapple")
str_starts(fruit, "p")
#> [1] FALSE FALSE TRUE TRUE
str_starts(fruit, "p", negate = TRUE)
#> [1] TRUE TRUE FALSE FALSE
str_ends(fruit, "e")
#> [1] TRUE FALSE FALSE TRUE
str_ends(fruit, "e", negate = TRUE)
#> [1] FALSE TRUE TRUE FALSE
The new
str_to_sentence() function capitalizes strings with sentence case, like so:
str_to_sentence("the quick brown dog")
#> [1] "The quick brown dog"
Support for negate
str_subset(),
str_detect(), and
str_which() now have the negate argument, which is used to find the elements that do not match a pattern (as seen above in the str_starts() and str_ends() examples).
Acknowledgements
Thank you to everyone who contributed to this release: @AmeliaMN, @batpigandme, @beckymaust, @BenjaminLouis, @blablablerg, @bschneidr, @bwiernik, @ctmann, @damianooldoni, @dan-reznik, @denrou, @diegogarcilazo, @DieselAnalytics, @elisakreiss, @giovannikraushaar, @hadley, @hammer, @jennybc, @jimhester, @jonocarroll, @jonthegeek, @jrnold, @juanrocha, @kmace, @krlmlr, @osorensen, @paleolimbot, @pdelboca, @pgrandinetti, @PirateGrunt, @samhinshaw, @sastoudt, @seanpor, @yj-danielyang, and @yutannihilation.