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Auto merge of #28021 - steveklabnik:gh27958, r=alexcrichton

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Fixes #27958
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bors 2015-08-26 21:25:13 +00:00
commit 1c3b19d69d
1 changed files with 6 additions and 5 deletions
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11
src/libcore/any.rs
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@ -13,11 +13,12 @@
//!
//! `Any` itself can be used to get a `TypeId`, and has more features when used
//! as a trait object. As `&Any` (a borrowed trait object), it has the `is` and
//! `as_ref` methods, to test if the contained value is of a given type, and to
//! get a reference to the inner value as a type. As `&mut Any`, there is also
//! the `as_mut` method, for getting a mutable reference to the inner value.
//! `Box<Any>` adds the `move` method, which will unwrap a `Box<T>` from the
//! object. See the extension traits (`*Ext`) for the full details.
//! `downcast_ref` methods, to test if the contained value is of a given type,
//! and to get a reference to the inner value as a type. As `&mut Any`, there
//! is also the `downcast_mut` method, for getting a mutable reference to the
//! inner value. `Box<Any>` adds the `move` method, which will unwrap a
//! `Box<T>` from the object. See the extension traits (`*Ext`) for the full
//! details.
//!
//! Note that &Any is limited to testing whether a value is of a specified
//! concrete type, and cannot be used to test whether a type implements a trait.