Function glib::interval_stream

Important traits for Box<R>

impl<R> Read for Box<R> where
    R: Read + ?Sized, impl<W> Write for Box<W> where
    W: Write + ?Sized, impl<I> Iterator for Box<I> where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn interval_stream(
    value: u32
) -> Box<Stream<Item = (), Error = Never> + Send>

Create a Stream that will provide a value every given number of milliseconds.

The Future must be spawned on an Executor backed by a glib::MainContext.