Recommended: A Tutorial on Loops in R

This is a very clear, but also very detailed explanation of the for, while, and repeat loops along with the concept of vectorization. A great resource for beginners.

Carlo Fanara. A Tutorial on Loops in R. DataCamp blog, September 26, 2016. Available at https://www.datacamp.com/community/tutorials/tutorial-on-loops-in-r.

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