On Wed, Oct 26, 2005 at 04:02:06PM +0200, Juerd wrote: : Larry Wall skribis 2005-10-26 6:44 (-0700): : > I should point out that one of the major changes in the most recent : > S6 is that named arguments are now marked by : rather than +, with : > :foo($bar) being the way to declare parameter $bar but give it the : > external name of "foo". A + is now reserved to mark mandatory : > parameters, though it's redundant on positionals. A mandatory : > named parameter is now marked +:$nonoptionaloption. : : If optional parameters get "?", then why don't give mandatory parameters : "!"? : : Or, if you wish: if mandatory parameters get "+", then why do optional : parameters not get "-"? : : # The mandatory/optional thing could even be postfix, which results in : # clearer code than the stacked "+:$": : # : # sub foo ($this!, $is!, :$mandatory!, $optional?, $really?) : : I do like the s/+/:/ change, though!
That's interesting. Then we could say that "= default" implies ?. I think I like it. It would also ease transition of Pugs not to change the meaning of + immediately, but that's a secondary consideration. And really, + ought to mean a * but with a minimum of 1. Larry
