javascript - What does $ (function () {} ); do? - Stack Overflow
What these functions do is that when the function is defined, The function is immediately called, which saves time and extra lines of code (as compared to calling it on a seperate line).
What is the (function () { } ) () construct in JavaScript?
I have seen the use of %>% (percent greater than percent) function in some packages like dplyr and rvest. What does it mean? Is it a way to write closure blocks in R?
syntax - What does %>% function mean in R? - Stack Overflow