Method add_all_valueless

option_parser/src/lib.rs:233–238

Registers multiple flag-style options that do not take a value. Equivalent to calling [`add_valueless`](Self::add_valueless) for each element in the slice.

(&mut self, options: &[&str])

    /// Equivalent to calling [`add_valueless`](Self::add_valueless) for each
    /// element in the slice.
    pub fn add_all_valueless(&mut self, options: &[&str]) -> &mut Self {
        for option in options {
            self.add_valueless(option);
        }
        self
    }

    /// Returns the raw string value of an option, or `None` if the option was
    /// not set or if its value is an empty string (e.g. `key=`).