rustHow to throw custom error in Rust

Rust provides the panic! macro to throw custom errors. It takes a &str argument which is the error message.

Example code

fn main() {
    panic!("Custom error message");
}

Output example

thread 'main' panicked at 'Custom error message', src/main.rs:2:5

The code consists of:

• panic! macro: used to throw a custom error
• &str argument: the error message

Helpful links

• Rust panic! macro

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