Please RSVP on this Meetup page and on the Splash page located here: https://rladieschicagowelcomeschiefscientistatrstudiohadle.splashthat.com/ RLadies Chicago is privileged to welcome Chief Scientist at RStudio, author of ggplot2 and many packages in the tidyverse, and perhaps the most prolific R developer of our time: Hadley Wickham. Talk Abstract: Tidy evaluation is a new framework for non-standard evaluation that is used throughout the tidyverse. In this talk, I'll introduce you to the problem that tidy eval solves, illustrated with examples of the various approaches used in R. I'll then explain the most important components so that you can start writing your own functions instead of copying and pasting tidyr and dplyr code. Schedule: 6:00-6:30 -- Food, introductions, and announcements 6:30-7:15 -- Talk by Hadley 7:15-8:00 -- Questions, networking 8:00-9:30 -- Post-event at the Chicago Athletic Association's Drawing Room at 12 S Michigan Ave, Fl 2. https://www.yelp.com/biz/drawing-room-chicago Bio: Hadley is Chief Scientist at RStudio, a member of the R Foundation, and Adjunct Professor at Stanford University and the University of Auckland. He builds tools (both computational and cognitive) to make data science easier, faster, and more fun. His work includes packages for data science (the tidyverse: including ggplot2, dplyr, tidyr, purrr, and readr) and principled software development (roxygen2, testthat, devtools). He is also a writer, educator, and speaker promoting the use of R for data science. Learn more on his website, http://hadley.nz. What to bring: Laptop or notebook if you like! Wifi is available and live-tweeting is encouraged. Important to know: We expect all attendees to abide & be governed by our community code of conduct. Please take a moment to review our R-Ladies Global code of conduct (particularly if this is your first time attending!): https://github.com/rladies/starter-kit/wiki/Code-of-Conduct. Q: Are men welcome to attend R-Ladies events? A: Yes, men are welcome at this event. Our mission is to encourage more women and non-binary individuals to get involved in the R community. Please help us by spreading the word about R-Ladies, and by being respectful of the fact that this event is primarily for women/non-binary/female-identifying individuals. Afterward, those interested will head down the street for an informal post-event at the Drawing Room at 12 S Michigan Ave, Fl 2, Chicago Athletic Association.