# Trait core::marker::Unsize [−] [src]

    pub trait Unsize<T: ?Sized> { }

Unstable (`unsize` #27732)

Types that can be "unsized" to a dynamically-sized type.

For example, the sized array type `[i8; 2]` implements `Unsize<[i8]>` and `Unsize<fmt::Debug>`.

All implementations of `Unsize` are provided automatically by the compiler.

`Unsize` is used along with `ops::CoerceUnsized` to allow "user-defined" containers such as `rc::Rc` to contain dynamically-sized types. See the DST coercion RFC for more details.

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