In R there are user-defined functions that are different than those in a library.

How do I get a list of only those functions?

I know there is ls() but it gives all objects.
I find that class(x) can say "function" if "x" is a function.

CodePudding user response：

We may use lsf.str to return the functions created in the global env

lsf.str()

If we want to just get the names of the functions without the attributes

c(lsf.str())