Struct Digits 

pub struct Digits { /* private fields */ }

This struct acts similar to a full number with a custom numeric character base which is provided and mapped via a BaseCustom instance.

The underlying implementation for Digits is a linked list where all the methods recurse as far as need to to implement the operations.

Implementations

impl Digits

pub fn add(&self, other: Self) -> Self

Add two Digits instances together.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let eleven = Digits::new(base10.clone(), "11".to_string());
let two = Digits::new(base10, "2".to_string());

assert_eq!(eleven.add(two).to_s(), "13");

Output

"13"

This will panic if numeric bases are not the same.

pub fn as_mapping_vec(&self) -> Vec<u64>

Returns a vector of each characters position mapping

pub fn base(&self) -> usize

Make numeric base size publicly available on Digits

pub fn gen<T>(&self, other: T) -> Self

where Self: From<(BaseCustom<char>, T)>,

Allows you to generate/encode a Digits from a u64 or other Digits even if they are of a different numeric base.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let two = Digits::new(base10, "2".to_string());
let three = two.gen(3_u64);

assert_eq!(three.to_s(), "3");

pub fn is_valid_adjacent(&self, adjacent: usize) -> bool

Returns true of false based on whether the limit of allowed adjacents is not exceeded. Early termination result when false.

Same as being a more efficient self.max_adjacent <= allowed_adjacent.

pub fn is_compat(&self, other: &Self) -> bool

Returns whether the two Digits instances have the same numeric base and character mapping.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let two = Digits::new(base10.clone(), "2".to_string());
let three = Digits::new(base10, "3".to_string());

assert!(two.is_compat(&three));

pub fn is_one(&self) -> bool

Returns bool value of if the number is one.

pub fn is_zero(&self) -> bool

Returns bool value of if the number is zero.

pub fn length(&self) -> usize

Returns a usize of the total linked list length.

pub fn max_adjacent(&self) -> usize

Give the count for the maximum of the same adjacent characters for this digit.

Note that adjacent is a non-inclusive count. So for 7 numbers it’s 1 adjacent to 6 which will return 6.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let num = Digits::new(base10, "557771".to_string());

assert_eq!(num.max_adjacent(), 2);

The above example demonstrates that there are 2 adjacent 7s next to a 7 and that is the biggest adjacent set of numbers.

pub fn mul(&self, other: Self) -> Self

Multiply two Digits instances together.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let eleven = Digits::new(base10.clone(), "11".to_string());
let two = Digits::new(base10, "2".to_string());

assert_eq!(eleven.mul(two).to_s(), "22");

Output

"22"

This will panic if numeric bases are not the same.

pub fn mut_add(&mut self, other: Self) -> Self

Add two Digits instances together.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let mut eleven = Digits::new(base10.clone(), "11".to_string());
let two = Digits::new(base10, "2".to_string());

assert_eq!(eleven.mut_add(two).to_s(), "13");

Output

"13"

This will panic if numeric bases are not the same.

pub fn mut_mul(&mut self, other: Self) -> Self

Multiply two Digits instances together.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let mut eleven = Digits::new(base10.clone(), "11".to_string());
let two = Digits::new(base10, "2".to_string());

assert_eq!(eleven.mut_mul(two).to_s(), "22");

Output

"22"

This will panic if numeric bases are not the same.

pub fn new<S>(mapping: BaseCustom<char>, number: S) -> Digits

where S: Into<String>,

Creates a new Digits instance with the provided character set and value.

The first parameter must be a BaseCustom object which defines and maps all values. The second parameter is a string value with all valid characters from the BaseCustom set.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let nine = Digits::new(base10, "9".to_string());

assert_eq!(nine.to_s(), "9");

pub fn new_mapped(&self, places: &[u64]) -> Result<Self, &'static str>

Create a Digits from a Vector of from zero positional mappings for custom Digits numeric base.

Example

use digits::prelude::*;

let base16 = BaseCustom::<char>::new("0123456789abcdef".chars().collect());
let builder = Digits::new(base16, "".to_string());
let num = builder.new_mapped(&vec![1,0,2,1]).ok().unwrap();

assert_eq!(num.to_s(), "1021");

If zero had been Z in the example above the same vector vec![1,0,2,1] would have produced a Digits instance of a Hex value of “1Z21”. The vector is the litteral positional map of the character(s) via an index from zero regardless of numeric base.

If a number provided within the vector is higher than the numeric base size then the method will return an Err(&'static str) Result.

pub fn new_one(mapping: BaseCustom<char>) -> Self

Creates a new Digits instance with value of one and the provided character mapping.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let one = Digits::new_one(base10);

assert_eq!(one.to_s(), "1");

pub fn new_zero(mapping: BaseCustom<char>) -> Self

Creates a new Digits instance with value of zero and uses the provided character mapping.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let zero = Digits::new_zero(base10);

assert_eq!(zero.to_s(), "0");

pub fn next_non_adjacent(&mut self, adjacent: usize) -> Self

Returns the next Digits in incrementing that only allows the given number of adjacent number duplicates.

This will panic! if numeric base is less than 4.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let mut num = Digits::new(base10, "98".to_string());

assert_eq!(num.next_non_adjacent(0).to_s(), "101");

pub fn one(&self) -> Self

Creates a new Digits instance with value of one and uses the current character mapping.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let nine = Digits::new(base10, "9".to_string());
let one = nine.one();

assert_eq!(one.to_s(), "1");

pub fn pinky(&self) -> char

The “pinky” is the smallest digit a.k.a. current digit in the linked list a.k.a. the right most digit. This will be a char value for that digit.

pub fn pow(&mut self, pwr: Self) -> Self

Multiplies self times the power-of given Digits parameter.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());

let mut eleven = Digits::new(base10.clone(), "11".to_string());
let two = Digits::new(base10, "2".to_string());

assert_eq!(eleven.pow(two).to_s(), "121");

Output

"121"

pub fn pred_till_zero(&mut self) -> Self

Minuses one unless it’s zero, then it just returns a Digits instance of zero.

pub fn prep_non_adjacent(&mut self, adjacent: usize) -> Self

Sometimes given starting Digits have more adjacent characters than is desired when proceeding with non-adjacent steps. This method provides a valid initial state for step_non_adjacent’s algorithm to not miss any initial steps.

_This method is used internally for next_non_adjacent.

This will panic! if numeric base is less than 4.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let mut num = Digits::new(base10, "0003".to_string());

assert_eq!(num.prep_non_adjacent(1).to_s(), "0009");

In the example above the prep moves to a valid state of “0010” and then minuses one to “0009” so that step_non_adjacent will add 1 and return to the valid state of “0010” for this one-adjacent scenario.

For performance in your own applications use this method once and continue iterating with step_non_adjacent.

For convenience you may just use next_non_adjacent instead of prep and step.

pub fn propagate<S>(&self, number: S) -> Self

where S: Into<String>,

Creates a new Digits instance with the internal character set and given value.

The parameter is a string value with all valid characters from the BaseCustom set.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let nine = Digits::new(base10, "9".to_string());
let forty_two = nine.propagate("42".to_string());

assert_eq!(forty_two.to_s(), "42");

pub fn rcount(&self, character_index: u8) -> usize

Right count of digits character index.

Returns a usize of how many Digits values from the right match the BaseCustom index given for number.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("ABC3456789".chars().collect());
let num = Digits::new(base10, "34BBB".to_string());

assert_eq!(num.rcount(1), 3);

Output

3

pub fn replicate(self) -> Self

An alias for clone. Useful for unboxing.

pub fn step_non_adjacent(&mut self, adjacent: usize) -> Self

Returns the next Digits in incrementing that only allows the given number of adjacent number duplicates.

This will panic! if numeric base is less than 4.

NOTE: This assumes the starting state is valid for given non adjacent characters. If you want to ensure this please use prep_adjacent before this, or just use next_non_adjacent to handle them both.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let mut num = Digits::new(base10, "98".to_string());

assert_eq!(num.step_non_adjacent(0).to_s(), "101");

pub fn succ(&mut self) -> Self

Plus one.

pub fn to_s(&self) -> String

Gives the full value of all digits within the linked list as a String.

pub fn to_string(&self) -> String

Gives the full value of all digits within the linked list as a String.

pub fn zero(&self) -> Self

Creates a new Digits instance with value of zero and the current character mapping.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let nine = Digits::new(base10, "9".to_string());
let zero = nine.zero();

assert_eq!(zero.to_s(), "0");

pub fn zero_fill(&mut self, length: usize)

Zero fills the left of the current number up to a total character length.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let mut nine = Digits::new(base10, "9".to_string());
nine.zero_fill(4);

assert_eq!(nine.to_s(), "0009");

pub fn zero_trim(&mut self)

Zero trims the left of the current number.

Example

use digits::prelude::*;

let base10 = BaseCustom::<char>::new("0123456789".chars().collect());
let mut nine = Digits::new(base10, "0009".to_string());
nine.zero_trim();

assert_eq!(nine.to_s(), "9");

Trait Implementations

impl Add for Digits

type Output = Digits

The resulting type after applying the + operator.

fn add(self, other: Self) -> Self

Performs the + operation.

impl AddAssign for Digits

fn add_assign(&mut self, other: Self)

Performs the += operation.

impl BitXor for Digits

type Output = Digits

The resulting type after applying the ^ operator.

fn bitxor(self, other: Self) -> Self

Performs the ^ operation.

impl BitXorAssign for Digits

fn bitxor_assign(&mut self, other: Self)

Performs the ^= operation.

impl Clone for Digits

fn clone(&self) -> Digits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Digits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Digits

fn default() -> Digits

Returns the “default value” for a type.

impl Display for Digits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<(BaseCustom<char>, Digits)> for Digits

fn from(d: (BaseCustom<char>, Digits)) -> Digits

Converts to this type from the input type.

impl From<(BaseCustom<char>, u64)> for Digits

fn from(d: (BaseCustom<char>, u64)) -> Digits

Converts to this type from the input type.

impl From<(Digits, Digits)> for Digits

fn from(d: (Digits, Digits)) -> Digits

Converts to this type from the input type.

impl From<Digits> for String

fn from(d: Digits) -> String

Converts to this type from the input type.

impl Into<String> for Digits

fn into(self) -> String

impl Mul for Digits

type Output = Digits

The resulting type after applying the * operator.

fn mul(self, other: Self) -> Self

Performs the * operation.

impl MulAssign for Digits

fn mul_assign(&mut self, other: Self)

Performs the *= operation.

impl PartialEq for Digits

fn eq(&self, other: &Digits) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Digits

fn partial_cmp(&self, other: &Digits) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Radix for Digits

fn binary(&self) -> Digits

Convert current Digits to binary

fn octal(&self) -> Digits

Convert current Digits to octal

fn decimal(&self) -> Digits

Convert current Digits to decimal

fn hex(&self) -> Digits

Convert current Digits to hexadecimal

fn hexl(&self) -> Digits

Convert current Digits to lowercase hexadecimal

impl Reverse for Digits

fn reverse(&mut self)

Example