R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?

Question

Does R have a concept of += (plus equals) or ++ (plus plus) as c++/c#/others do?

Answer 1

R doesn't have these operations because (most) objects in R are immutable. They do not change. Typically, when it looks like you're modifying an object, you're actually modifying a copy.