Introduction to Function Currying in Swift

Update, August 5, 2020: Swift has changed a lot since this article was first published in 2014. Most of the code snippets have been tweaked in order to compile under more recent Swift compilers. Where it didn’t make sense to tweak the code, the differences between then and now have been explained, along with links to the relevant Swift Evolution proposals where possible. Enjoy! —Adam There’s a cha