Is it possible to make basic ops const-fn?

[Boscop]

Is it possible to make basic ops const-fn? E.g. fn mul(self, r: T) -> Self::Output.

To allow them to be used in constant initializations (without incurring the overhead of lazy_static).

[kornelski]

I think const fn isn't stable yet? Other than that I agree it's a good idea and I think it should be possible to do for most functions.

[owenthewizard]

It's not stable now?

[kornelski]

Yup, it's stable and good to go!

[ripytide]

While I understand that const fn is now stable, const fn in trait is not yet stable so the example provided of fn mul(self, r: T) -> Self::Output is (at the time of writing) not yet able to become const fn mul(self, r: T) -> Self::Output since it belongs to the trait Mul. Currently, the only const fn methods I can see in this crate are the new() -> Self methods, but as changes from not_const to const on inherent methods is backwards compatible I don't see this as high priority for #64.

[kornelski]

I was initially thinking about just inherent functions. The std::ops is unlikely to be const in the foreseeable future.