On Fri, Mar 14, 2003 at 01:45:56PM +1100, Damian Conway wrote:
: Oh, and I was wrong to originally write: Cmulti *isa ...
Sorry, you're not even wrong. :-)
: Multimethods live in their own namespace. No * required.
Alternately, we require the C* in order to accurately document
their scope.
Piers Cawley wrote:
Speaking of multis and constants, Greg McCarroll wondered on IRC if
this would work:
multi factorial (Int 0) { 1 }
multi factorial (Int $n) { $n * factorial($n-1) }
Probably not. We did discuss whether multimethods should be able to be
overloaded by value, but
or, supposing we have some form of parameterized types, you could create
something more generic like:
class Val($N) {
multi *isa ($obj, Val($N) $class) { $obj ~~ $N }
}
# and then...
multi factorial (IntVal(0) $g) { 1 }
Yes, YES! Marvelous!
Not
Luke Palmer wrote:
Not that that couldn't be done with a closure anyway...
{
my Class %valClasses;
sub Val($N) returns Class {
my Class $rclass = %valClasses{$N} //= class {
multi *isa ($obj, $rclass $class) { $obj ~~ $N }
}
}
}
multi
On Wed, Mar 12, 2003 at 01:35:08PM +1100, Damian Conway wrote:
: Joe Gottman wrote:
:
:Will it be possible in perl6 to overload multis on the const-ness of a
: parameter, like C++ does? For instance,
:
:multi getX(Foo $self:) returns Int {...} #const version
:multi getX(Foo $self:
Joe Gottman [EMAIL PROTECTED] writes:
Will it be possible in perl6 to overload multis on the const-ness of a
parameter, like C++ does? For instance,
multi getX(Foo $self:) returns Int {...} #const version
multi getX(Foo $self: is rw) returns Int is rw {...} #non-const version
- Original Message -
From: Damian Conway [EMAIL PROTECTED]
To: Perl6 [EMAIL PROTECTED]
Sent: Tuesday, March 11, 2003 9:35 PM
Subject: Re: A6: overloading multis on constness of parameters
Joe Gottman wrote:
Will it be possible in perl6 to overload multis on the const-ness
- Original Message -
From: Damian Conway [EMAIL PROTECTED]
To: Perl6 [EMAIL PROTECTED]
Sent: Tuesday, March 11, 2003 9:35 PM
Subject: Re: A6: overloading multis on constness of parameters
Joe Gottman wrote:
Will it be possible in perl6 to overload multis on the const
Will it be possible in perl6 to overload multis on the const-ness of a
parameter, like C++ does? For instance,
multi getX(Foo $self:) returns Int {...} #const version
multi getX(Foo $self: is rw) returns Int is rw {...} #non-const version
If getX were called on a const Foo object
Joe Gottman wrote:
Will it be possible in perl6 to overload multis on the const-ness of a
parameter, like C++ does? For instance,
multi getX(Foo $self:) returns Int {...} #const version
multi getX(Foo $self: is rw) returns Int is rw {...} #non-const version
That second one would have to
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