On Fri, Nov 08, 2002 at 08:35:00PM +1100, Damian Conway wrote:
: What you want are conversion-to-(num|str|bool) methods:
:
: sub a_pure_func(Num $n) returns Num {
: class is Num {
: has Num $cache;
: sub value { $n * $n }
: method operator:+ ($self:) { +($cache //= value ) }
: method operator:~ ($self:) { ~($cache //= value ) }
: method operator:? ($self:) { ?($cache //= value ) }
: }.new
: }
Just a nit, but those are probably prefix: rather than operator:, since
we may need more clues than just the arguments to distinguish:
prefix:
infix:
postfix:
circumfix: (or should that really be outfix:?)
Larry
