lifetimes.rs

pub struct OpenRadioContext<'a> { // public struct
    usb_context: Context, // private fields, safety depends on these not being accessed directly
    device_handle: DeviceHandle<'a>,
}

... snip ...

impl <'a> OpenRadioContext<'a> {
    fn open() -> OpenRadioContext<'a> {
        let mut ctx: Box<Context> = Box::new(Context::new().unwrap()); // Has lifetime a' but Rust doesn't know that
        let mut handle = ctx.open_device_with_vid_pid(0x1915, 0x7777).and_then(|mut hndl: DeviceHandle| {
            hndl.reset();
            hndl.set_active_configuration(1).unwrap();
            hndl.claim_interface(0).unwrap();
            unsafe {
                Option::Some(transmute::<DeviceHandle, DeviceHandle<'a>>(hndl)) // Ewww
            }
        }).unwrap();
        OpenRadioContext { // Make sure ctx and handle both have lifetime 'a
            usb_context: ctx,
            device_handle: handle,
        }
    }
    ...
}