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Github implement `feature(const_generics_defaults)` by JulianKnodt · Pull Reques...
source link: https://github.com/rust-lang/rust/pull/75384
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Implements const generics defaults struct Example<const N: usize=3>, as well as a query for getting the default of a given const-parameter's def id. There are some remaining FIXME's but they were specified as not blocking for merging this PR. This also puts the defaults behind the unstable feature gate #![feature(const_generics_defaults)].
This currently creates a field which is always false on GenericParamDefKind for future use when
consts are permitted to have defaults. I'm not sure if this is exactly what is best for adding default parameters, but I mimicked the style of type defaults, so hopefully this is ok.
r? @lcnr
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