Method contains

src/strings/alphabet.rs:127–129

Returns true if the argument is a character in this alphabet

(&self, c: char)

    /// Returns true if the argument is a character in this alphabet
    pub fn contains(&self, c: char) -> bool {
        self.inverse.get(c as usize) != Some(&-1)
    }

    /// Returns the number of characters in this alphabet (the radix)
    pub fn radix(&self) -> usize {