R 工作区中的用户定义函数列表

Question

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.

Answer 1

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())