On Fri, Jan 13, 2017 at 10:32 PM, ToddAndMargo <toddandma...@zoho.com> wrote:
> I almost understand what you said. What do you/they mean by > "positional parameters"? > foo(1, 5, :bar) 1 and 5 are positional: what they represent can only be determined by knowing their position in the parameter list. Which is why they're required by default; if they could be optional, how would it know whether foo(5) represented a missing first vs. missing second parameter? :bar is a named parameter: it can occur anywhere, and can be meaningfully optional because you have to name it to use it; whereas the positional parameters can only be recognized by their position with respect to other positional parameters. -- brandon s allbery kf8nh sine nomine associates allber...@gmail.com ballb...@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
