# Generate UUIDs in R

[This article was first published on

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

**Digithead's Lab Notebook**, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

Here a snippet of R to generate a Version 4 UUID. Dunno why there wouldn’t be an official function for that in the standard libraries, but if there is, I couldn’t find it.

## Version 4 UUIDs have the form: ## xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx ## where x is any hexadecimal digit and ## y is one of 8, 9, A, or B ## f47ac10b-58cc-4372-a567-0e02b2c3d479 uuid <- function(uppercase=FALSE) { hex_digits <- c(as.character(0:9), letters[1:6]) hex_digits <- if (uppercase) toupper(hex_digits) else hex_digits y_digits <- hex_digits[9:12] paste( paste0(sample(hex_digits, 8), collapse=''), paste0(sample(hex_digits, 4), collapse=''), paste0('4', sample(hex_digits, 3), collapse=''), paste0(sample(y_digits,1), sample(hex_digits, 3), collapse=''), paste0(sample(hex_digits, 12), collapse=''), sep='-') }

View as a gist: https://gist.github.com/cbare/5979354

To

**leave a comment**for the author, please follow the link and comment on their blog:**Digithead's Lab Notebook**.R-bloggers.com offers

**daily e-mail updates**about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.