Method or_err

src/error.rs:81–86

(self, context: D)

impl<T> OptionExt<T> for Option<T> {
    fn or_err<D>(self, context: D) -> Result<T>
    where
        D: Display + Send + Sync + 'static,
    {
        self.context(context)
    }

    fn required(self) -> Result<T> {
        self.context("missing required option")