Method take_keyed_flag

std/src/console/spec.rs:168–179

Queries the value of the keyed `flag` from the specification, which may or may not be present. The value is parsed according to the type `V`. The flag is marked as "checked" so that `finish` won't raise it as residual.

(&mut self, key: &str)

    ///
    /// The flag is marked as  "checked" so that `finish` won't raise it as residual.
    pub fn take_keyed_flag<V>(&mut self, key: &str) -> Result<Option<V>>
    where
        V: FromStr,
        V::Err: Display,
    {
        match self.take_keyed_flag_str(key) {
            Some(v) => V::from_str(v)
                .map(|v| Some(v))
                .map_err(|e| mkerror!("Invalid console flag {}: {}", key, e)),
            None => Ok(None),
        }
    }

    /// Validates that all provided flags have been queried by the driver.
    pub fn finish(self) -> Result<()> {