“We are excited to announce that RFC 3323 "Restrictions" is ready for testing on nightly Rust.”

Inside Rust blog · Aug 9 · Rust RFC 3323 'Restrictions' ready for nightly testing

“The impl_restriction feature allows explicit restriction of the scope in which a trait may be implemented.”

Inside Rust blog · Aug 9 · Rust RFC 3323 'Restrictions' ready for nightly testing

“Without this feature, this use case is typically handled using the sealed trait pattern, which is described in the Rust API Guidelines.”

Inside Rust blog · Aug 9 · Rust RFC 3323 'Restrictions' ready for nightly testing

“The mut_restriction feature allows explicit restriction of the scope in which a field may be mutated.”

Inside Rust blog · Aug 9 · Rust RFC 3323 'Restrictions' ready for nightly testing

“This provides an alternative to getter methods by allowing read-only access through direct field access.”

Inside Rust blog · Aug 9 · Rust RFC 3323 'Restrictions' ready for nightly testing