This is a course for use with the swirl R package. swirl is a platform for learning (and teaching) statistics and R interactively via the R console.
For more information regarding swirl, visit the swirl website or the swirl GitHub repository.
First make sure you have swirl installed:
install.packages("swirl")
Or alternatively get the latest development version:
install.packages("devtools")
devtools::install_github("swirldev/swirl", ref = "dev")
Then to install this course and get started simply run:
library(swirl)
install_course("Regular Expressions")
swirl()
Not that the above will install the course from the Swirl Course Network. To install the most up to date version of the course directly from this repo use:
install_course_github("jonmcalder", "Regular_Expressions")
Regular Expressions are a fundamental tool in the hands of any programmer when it comes to working with strings. This course will provide an overview of what is possible with regular expressions as they are applied in R.
Though different programming languages often possess their own conventions and flavor when it comes to regular expressions, the vast majority of the knowledge you will obtain from this course is transferable to regular expressions in other programming languages.
In it's current form this course covers most of the basics for regular expressions but can hopefully become more comprehensive over time. Please give it a try and report any problems you have or leave suggestions for improvement on the issues page as you work through the lessons.
If you are able to submit a pull request that would be even better! :-)
Big thanks to the swirl developers @ncarchedi, @seankross, and @WilCrofter (who did an excellent job with documentation) as well as many others who have contributed code and/or learning content to swirl.
Thanks also to Joel Gombin, Lorenz Walthert & Gavin Masterson for reviewing this course and offering feedback.