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downcast

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library0.11.0rscratesunverified

Trait for downcasting trait objects back to their original types, enabling runtime type checking.

# Cargo.toml [dependencies] downcast = "0.11.0"
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downcast
utilityrustv0.11.0
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Install & Compatibility
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Code
Verified usage

Verified import paths — ran on the pinned version, not inferred.

Downcast
✓ use downcast::Downcast;

Downcasts a trait object to a concrete type.

use downcast::Downcast; trait MyTrait: Downcast {} impl_downcast!(MyTrait); struct MyStruct; impl MyTrait for MyStruct {} fn main() { let obj: Box<dyn MyTrait> = Box::new(MyStruct); if let Some(concrete) = obj.downcast_ref::<MyStruct>() { println!("Downcast succeeded"); } }
Debug
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Version history
0.11.0latest on crates.io
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Dependencies

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Agent activity
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node
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Resources
downcast — cargo add downcast · libregistry