Function format_component 

pub(crate) fn format_component(
    output: &mut (impl Write + ?Sized),
    component: Component,
    date: Option<Date>,
    time: Option<Time>,
    offset: Option<UtcOffset>,
) -> Result<usize, Format>

Available on crate feature formatting only.

Format the provided component into the designated output. An Err will be returned if the component requires information that it does not provide or if the value cannot be output to the stream.