Any Type

Overview

The Any trait enables runtime type inspection and downcasting for dynamic typing scenarios.

Code Example

#![allow(unused)]
fn main() {
use std::any::Any;

let string_value: &dyn Any = &"Hello, Any!".to_string();
let int_value: &dyn Any = &42i32;

if let Some(s) = string_value.downcast_ref::<String>() {
    println!("String value: {}", s);
}

if let Some(i) = int_value.downcast_ref::<i32>() {
    println!("Integer value: {}", i);
}
}

Key Concepts

• Any: Trait for runtime type information
• downcast_ref: Safely convert to concrete type
• Useful for plugin systems, dynamic dispatch

Learn More

• std::any documentation