Struct FxView 

pub struct FxView<'a, R: Scalar> {
    data: &'a FxRates,
    params: Cow<'a, [R]>,
}

FxRates lifted into one pricing mode.

Fields

data: &'a FxRates

params: Cow<'a, [R]>

Implementations

impl<'a, R: Scalar> FxView<'a, R>

pub fn parameters(&self) -> &[R]

This mode’s parameters.

pub fn rate(&self, pair: CurrencyPair) -> Result<R, MarketDataError>

The spot rate for pair: quote units per one base.

A pair stored the other way round is answered by its reciprocal, which carries the reciprocal’s sensitivity because the mode’s own arithmetic computes it. A currency against itself is one.

Errors

MarketDataError::MissingFxRate naming the pair, if neither direction was supplied.

fn quoted(&self, pair: CurrencyPair) -> Option<R>

This pair as quoted, directly or by its reciprocal. None when neither direction is stored — no bridging.

fn missing(pair: CurrencyPair) -> MarketDataError

pub fn convert( &self, amount: R, from: Currency, to: Currency, ) -> Result<R, MarketDataError>

amount in from, converted to to.

Errors

As rate.

pub fn passive(&self) -> FxView<'a, f64>

This view re-lifted at the passive mode, borrowing the same storage.

Trait Implementations

impl<'a, R: Clone + Scalar> Clone for FxView<'a, R>

fn clone(&self) -> FxView<'a, R>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, R: Debug + Scalar> Debug for FxView<'a, R>

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

Formats the value using the given formatter.