I'm not a fan of the CopyFile solution suggested. Often one parameter is distinguished by whether it could be an array. The Unix cat utility takes multiple sou

I'm not a fan of the CopyFile solution suggested. Often one parameter is distinguished by whether it could be an array. The Unix cat utility takes multiple sources to a single destination, so analogously: bool cat_files_to_file(string dst, vector<string> srcs) and it'll be obvious in the call site what's going on: cat_files_to_file("/tmp/backup", {"presentation.md"}); and your function can also concatenate files.