Struct LnReturn 

pub struct LnReturn<T, V> { /* private fields */ }

Computes the natural logarithm and keep track of the last value. Usually applied to price data.

Implementations

impl<T, V> LnReturn<T, V>

where T: Float, V: View<T>,

pub fn new(view: V) -> Self

Create a new instance of Self with a chained View, whose output will be used to feed the ln return computation.

Trait Implementations

impl<T: Clone, V: Clone> Clone for LnReturn<T, V>

fn clone(&self) -> LnReturn<T, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, V: Debug> Debug for LnReturn<T, V>

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

Formats the value using the given formatter.

impl<T: Float> Default for LnReturn<T, Echo<T>>

fn default() -> Self

Returns the “default value” for a type.

impl<T, V> View<T> for LnReturn<T, V>

where T: Float, V: View<T>,

fn update(&mut self, val: T)

Update the state with a new value

fn last(&self) -> Option<T>

Return the last value, if Some, then its ready.