Struct UnimplementedFeature 

pub struct UnimplementedFeature {
    pub feature: &'static str,
    pub advice: &'static str,
    pub options: &'static [&'static str],
}

One unimplemented feature and the options that configure it.

Fields

feature: &'static str

Named in the error, e.g. “the CG-penalty / inexact-Newton line search”.

advice: &'static str

What the caller can do instead. Empty when there is nothing.

options: &'static [&'static str]

The options that belong to it.