Struct FxRate 

pub struct FxRate {
    pub pair: CurrencyPair,
    pub rate_type: RateType,
    pub effective_date: NaiveDate,
    pub rate: Decimal,
    pub inverse_rate: Decimal,
    pub source: String,
    pub valid_until: Option<NaiveDate>,
}

An exchange rate for a currency pair on a specific date.

Fields

pair: CurrencyPair

Currency pair.

rate_type: RateType

Rate type.

effective_date: NaiveDate

Effective date.

rate: Decimal

Exchange rate (units of to_currency per 1 unit of from_currency).

inverse_rate: Decimal

Inverse rate (for convenience).

source: String

Rate source (e.g., “ECB”, “FED”, “INTERNAL”).

valid_until: Option<NaiveDate>

Validity end date (if rate has limited validity).

Implementations

impl FxRate

pub fn new( from_currency: &str, to_currency: &str, rate_type: RateType, effective_date: NaiveDate, rate: Decimal, source: &str, ) -> Self

Creates a new FX rate.

pub fn with_validity(self, valid_until: NaiveDate) -> Self

Creates a rate with validity period.

pub fn convert(&self, amount: Decimal) -> Decimal

Converts an amount from source to target currency.

pub fn convert_inverse(&self, amount: Decimal) -> Decimal

Converts an amount from target to source currency (inverse).

pub fn is_valid_on(&self, date: NaiveDate) -> bool

Returns true if the rate is valid on the given date.

Trait Implementations

impl Clone for FxRate

fn clone(&self) -> FxRate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FxRate

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

Formats the value using the given formatter.