# [−][src]Trait downcast_rs::Downcast

    pub trait Downcast: Any {
        fn into_any(self: Box<Self>) -> Box<dyn Any>;
        fn as_any(&self) -> &dyn Any;
        fn as_any_mut(&mut self) -> &mut dyn Any;
    }

Supports conversion to `Any`. Traits to be extended by `impl_downcast!` must extend `Downcast`.

## Required methods

### `fn into_any(self: Box<Self>) -> Box<dyn Any>`

Convert `Box<Trait>` (where `Trait: Downcast`) to `Box<Any>`. `Box<Any>` can then be further `downcast` into `Box<ConcreteType>` where `ConcreteType` implements `Trait`.

### `fn as_any(&self) -> &dyn Any`

Convert `&Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&Any`'s vtable from `&Trait`'s.

### `fn as_any_mut(&mut self) -> &mut dyn Any`

Convert `&mut Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&mut Any`'s vtable from `&mut Trait`'s.

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## Implementors

### `impl<T: Any> Downcast for T`[src]

#### `fn into_any(self: Box<Self>) -> Box<dyn Any>`[src]

#### `fn as_any(&self) -> &dyn Any`[src]

#### `fn as_any_mut(&mut self) -> &mut dyn Any`[src]

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