错误回溯

这是一个简单的crate，用于调试错误来源。

安装

cargo add error-backtrace

用法

如何使用本工具

fn main() -> Result<(), ()> {
    let value = maybe_error().backtrace()?;
    Ok(())
}

fn maybe_error() -> Result<(), ()> {
    let value = error_source()?;
    let value2 = match error_source().handle_error() {
        Ok(x) => x,
        Err(_) => (),
    };

    Ok(())
}

fn error_source() -> Result<(), ()> {
    Err(()).trace()
}

不应如何使用本工具

fn main() -> Result<(), ()> {
    // Don't use trace at every step, only at the origin of the error
    let value = maybe_error().trace()?;
    Ok(())
}

fn maybe_error() -> Result<(), ()> {
    // Don't use trace at every step, only at the origin of the error
    let value = error_source().trace()?;
    let value2 = match error_source().handel_error() {
        Ok(x) => x,
        Err(_) => ()
    };

    Ok(())
}

fn error_source() -> Result<(), ()> {
    Err(()).trace()
}