Define all functions in one .R file, call them from another .R file. How, if possible?

Question

How do I call functions defined in abc.R file in another file, say xyz.R?A supplementary question is, how do I call functions defined in abc.R from the R prompt/command line?

Answer 1

You can do source("abc.R") and add that to xyz.R and it will run all the functions in the abc.R file