> On Dec 1, 2016, at 3:29 AM, Patrick Pijnappel via swift-dev
> wrote:
>
> I'm implementing a COW big int type but am running into problems with
> non-mutating functions (e.g. the + operator). Simplified example code below
> shows AFAIK the default way to implement COW, but the non-mutating m
I'm implementing a COW big int type but am running into problems with
non-mutating functions (e.g. the + operator). Simplified example code below
shows AFAIK the default way to implement COW, but the non-mutating method
doesn't identify the reference as unique (even with -O), resulting in a
needles
