templates + operator overloading problem

[BC]

On Sat, 08 Dec 2007 19:28:44 -0000, BC  
<NOTmi_emayl_adrez at hotmail.com.remove.not> wrote:

> i'm doing a lambda functions thing and I've got this
>
> class Lambda(T)
> {
>     Ret2!(RHST).Ret opSub(RHST)(RHST rhs)
>     {
>        return Ret2!(RHST).opAdd(rhs);
>     }
>     Ret2!(RHST).Ret opSub_r(RHST)(RHST rhs)
>     {
>        return Ret2!(RHST).opAdd(rhs);
>     }
> }
>
> i need to be able to accept an operand of any type on either side
> (for constants in expressions)
> unfortunately D says this is ambiguous and gives a compile error
> whenever I subtract Lambda from Lambda. i can specialise it for the
> case when it *is* Lambda, but i can't get rid of the need for a
> catch all for the constants. i can't see any way around
> this? is there?
>
> BC

is it me causing these extra posts? i guess it must be. oops