Example of a function to copy functions from a package.

copy_from.R

# a few utility funcs, might as well take them from `import`
import::here(symbol_list, symbol_as_character, .from = import)

copy_from <- function(.from, ...)
{
  symbols <- symbol_list(...)
  parent  <- parent.frame()
  from    <- symbol_as_character(substitute(.from))

  for (s in seq_along(symbols)) {
    fn <- get(symbols[s], envir = asNamespace(from), inherits = TRUE)
    assign(names(symbols)[s],
           eval.parent(call("function", formals(fn), body(fn))),
           parent)
  }
  
  invisible(NULL)
}