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Introducing `std::marker::PhantomUnsized` in Rust
The new `std::marker::PhantomUnsized` marker type has been introduced in Rust, allowing developers to work with types that have no compile-time or runtime defined size. This marker type is particularly useful in scenarios where you need to handle types with external metadata, providing a more 'Rust-like' syntax for such operations. By leveraging this new type, Rust developers can now more effectively manage unsized types in their projects, potentially simplifying code and improving type safety.
SRC Rust Internals