Method set_optional

src/param.rs:367–373

Sets the given key from an optional value. Removes the key if the value is `None`.

(&mut self, key: Param, value: Option<impl ToString>)

    /// Sets the given key from an optional value.
    /// Removes the key if the value is `None`.
    pub fn set_optional(&mut self, key: Param, value: Option<impl ToString>) -> &mut Self {
        if let Some(value) = value {
            self.set(key, value)
        } else {
            self.remove(key)
        }
    }

    /// Check if there are any values in this.
    pub fn is_empty(&self) -> bool {