If R is run in interactive mode; i.e., interactive() == TRUE, whatever
function calls that produced R objects gets printed (by calling the
appropriate print() method; known as auto-printing), unless the object is
returned invisibly (i.e., wrapped in invisible()). As an example, if you
put
Hi.All and R developers:
When I look into the R source code, I have a question.Since R has its
own data structure(i.e. SEXP),how does it convert the result to the normal
output after it has computed? For example,when I input,
abs(-3)
I learned that in R's execution, the expression is
