Struct Alphabet

pub struct Alphabet<T: Copy + Hash + Eq> { /* private fields */ }

Represents a set of characters that are valid in a crate::BlockId.

An alphabet is generic over the type of data used to represent a “character”, but Alphabet<char> is used when generating string codes (otherwise, BlockId will generate a Vec<T>).

Several built-in alphabets are provided.

Examples:

let alpha1: Alphabet<char> = Alphabet::alphanumeric();
let hexchars: Vec<char> = "0123456789abcdef".chars().collect();
let alpha2: Alphabet<char> = Alphabet::new(&hexchars);
let alpha3: Alphabet<u32> = Alphabet::new(&[1234, 5678, 2345]);

Implementations

impl<T: Copy + Hash + Eq> Alphabet<T>

pub fn new(alphabet: &[T]) -> Self

Construct an alphabet from a list of values.

Panics if the alphabet contains duplicates, or contains more than 256 elements.

pub fn len(&self) -> u8

impl Alphabet<char>

pub fn alphanumeric() -> Alphabet<char>

Returns an alphabet with lower- and upper-case letters, and numeral digits.

pub fn lowercase_alphanumeric() -> Alphabet<char>

Returns an alphabet with lower-case letters and numeral digits.

pub fn lowercase_alpha() -> Alphabet<char>

Returns an alphabet with lowercase letters only.

Trait Implementations

impl<T: Clone + Copy + Hash + Eq> Clone for Alphabet<T>

fn clone(&self) -> Alphabet<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.