downcast-rs

library2.0.2rscratesunverified

Provides safe trait object downcasting with support for type parameters, associated types, and type constraints.

# Cargo.toml
[dependencies]
downcast-rs = "2.0.2"

github ↗homepage ↗docs ↗

INSTALL

IMPORT

SIG · DOWNCAST-RS

downcast-rs

utilityrustv2.0.2

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

Downcast

✓ use downcast_rs::Downcast;

Downcasts a trait object to a concrete type.

use downcast_rs::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

Known issues

No known issues recorded.

Upgrade

Version history

2.0.2latest on crates.io

Audit

Dependencies

No dependency data recorded yet.

Agent activity

7 hits · last 30 days

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Resources

githubhttps://github.com/marcianx/downcast-rs ↗

homepagehttps://github.com/marcianx/downcast-rs ↗

docshttps://docs.rs/downcast-rs/ ↗