Struct Currency 

pub struct Currency {
    pub symbol: Option<char>,
    pub value: i64,
}

Represents currency through an optional symbol and amount of coin.

Each 100 coins results in a banknote. (100 is formatted as 1.00) The currency will be formatted as such: Currency(Some('$'), 432) ==> “$4.32”

Fields

symbol: Option<char>

Currency symbol

pick any of €, £, $, ¥ etc…

value: i64

value in the smallest possible unit

Implementations

impl Currency

pub fn new() -> Currency

Creates a blank Currency as Currency(None, 0)

Examples

let mut c = Currency::new();

pub fn from_value(value: i64) -> Currency

Initialize from i64

pub fn postfix(&self) -> Postfix<'_>

Returns an object that implements Display for different methods of printing currency.

Examples found in repository

examples/catalogue.rs (line 18)

fn print_items(items: &[BillItem<Product<'_>>]) {
    //println!("{:?}", items);
    for item in items {
        println!(
            "   * {:3}x {:15} {:6} {:6}",
            item.amount,
            item.product.name,
            item.product.price.postfix(),
            item.gross().postfix()
        );
    }
}

fn print(title: &str, bill: &Bill<Product<'_>>) {
    println!("{}:", title);
    for (tax, items) in &bill.items_by_tax {
        println!("  {}%", tax);
        print_items(items);
    }
    println!("---------------------------------------");
    println!("       {}", bill.gross_total().postfix());
    println!("     + {} (tax)", bill.tax_total().postfix());
    println!("   net {}", bill.net_total().postfix());
    println!();
}

pub fn prefix(&self) -> Prefix<'_>

Returns an object that implements Display for different methods of printing currency.

pub fn as_float(&self) -> f64

Returns the value as float

Warning, do not use this for calculation, this is for displaying only!

pub fn value(&self) -> i64

Returns the inner value

pub fn symbol(&self) -> Option<char>

Returns the inner symbol

Methods from Deref<Target = i64>

pub const MIN: i64 = -9_223_372_036_854_775_808i64

pub const MAX: i64 = 9_223_372_036_854_775_807i64

pub const BITS: u32 = 64u32

Trait Implementations

impl Add for Currency

Overloads the ‘+’ operator for Currency objects.

Panics

Panics if the two addends are different types of currency, as denoted by the Currency’s symbol.

type Output = Currency

The resulting type after applying the + operator.

fn add(self, rhs: Currency) -> Currency

Performs the + operation.

impl Clone for Currency

fn clone(&self) -> Currency

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Currency

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

Formats the value using the given formatter.

impl Default for Currency

fn default() -> Currency

Returns the “default value” for a type.

impl Deref for Currency

Required for DerefMut

type Target = i64

The resulting type after dereferencing.

fn deref(&self) -> &i64

Dereferences the value.

impl Div<i64> for Currency

Overloads the ‘/’ operator for Currency objects.

Allows a Currency to be divided by an i64.

type Output = Currency

The resulting type after applying the / operator.

fn div(self, rhs: i64) -> Currency

Performs the / operation.

impl From<(char, i64)> for Currency

fn from(tpl: (char, i64)) -> Currency

converts from a tuple of symbol and i64

impl From<(i64, char)> for Currency

fn from(tpl: (i64, char)) -> Currency

converts from a tuple of i64 and symbol

impl From<i64> for Currency

fn from(value: i64) -> Currency

converts from a i64

impl Mul<Currency> for i64

Overloads the ‘*’ operator for i64.

Allows an i64 to be multiplied by a Currency. Completes the commutative property for i64 multiplied by Currency.

type Output = Currency

The resulting type after applying the * operator.

fn mul(self, rhs: Currency) -> Currency

Performs the * operation.

impl Mul<f64> for Currency

Multiplies with float, probably not a good idea, help appreciated.

type Output = Currency

The resulting type after applying the * operator.

fn mul(self, rhs: f64) -> Currency

Performs the * operation.

impl Mul<i64> for Currency

Overloads the ‘*’ operator for Currency objects.

Allows a Currency to be multiplied by an i64.

type Output = Currency

The resulting type after applying the * operator.

fn mul(self, rhs: i64) -> Currency

Performs the * operation.

impl PartialEq for Currency

fn eq(&self, other: &Currency) -> 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 Currency

fn partial_cmp(&self, other: &Currency) -> 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 Serialize for Currency

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Sub for Currency

Overloads the ‘-’ operator for Currency objects.

Panics

Panics if the minuend and subtrahend are two different types of currency, as denoted by the Currency’s symbol.

type Output = Currency

The resulting type after applying the - operator.

fn sub(self, rhs: Currency) -> Currency

Performs the - operation.

impl Copy for Currency

impl Eq for Currency

impl StructuralPartialEq for Currency