问题
When doing some textual data cleaning in R, I can found some special characters. In order to get rid of them, I have to know their unicodes, for example € is \u20AC. I would like to know if it is possible "see" the unicodes with a function that take into account the string within the special character as an input?
来源：https://stackoverflow.com/questions/37703291/how-to-convert-special-characters-into-unicode-in-r