Re: The S29 Functions Project

[Rod Adams]

Ashley Winters wrote:
For documentary purposes, can we make that $radians?
multi sub cos (Num +$degrees) returns Num {
   return cos :radians($degrees * PI  / 180);
}
my Num $x = cos :degrees(270);
I have changed the trig functions it to have an optional "base" 
argument. (I'm option to new names for this term.)

The problem I see with your proposal is that both versions have the same 
MMD long name, which only looks at required parameters. We'd have to 
have something like:

   multi sub cos (Num ?$radians = $CALLER:_, Num +$degrees, Num 
+$gradians) returns Num

And then internally dispatch on what is defined and undefined.
Personally I like
   multi sub cos (Num ?$x = $CALLER::_, Num|Str +$base) returns Num
better. You can do:
   our &cos<> := &cos<>.assuming:base('degrees');
to make cosine "degrees only" for your current package.
-- Rod Adams