Trait DeathCross 

pub trait DeathCross {
    // Required method
    fn h_death_cross(
        &self,
        short_moving_average: usize,
        long_moving_average: usize,
    ) -> Option<Vec<usize>>;
}

Identifies the indices where a death cross occurs in a dataset.

A death cross occurs when a short-term moving average crosses below a long-term moving average. This is commonly interpreted as a bearish signal in financial analysis.

Parameters

• short_moving_average: the window size for the short-term moving average
• long_moving_average: the window size for the long-term moving average

Returns

• None if the dataset is shorter than long_moving_average, or if short_moving_average >= long_moving_average
• Some(vec![]) if no death cross was found
• Some(vec![i, ...]) where each i is the data index where a cross occurred

Example

let data = vec![5.0, 6.0, 8.0, 6.0, 4.0, 2.0, 1.0]; let crosses = data.h_death_cross(2, 3); assert!(crosses.unwrap().len() > 0);

A perfectly linear decreasing sequence like vec![6,5,4,3,2,1] will return Some(vec![]) because the short and long MAs are always equal — no crossover occurs.

Required Methods

fn h_death_cross( &self, short_moving_average: usize, long_moving_average: usize, ) -> Option<Vec<usize>>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<D> DeathCross for [D]

where D: Copy + Into<f64>,

fn h_death_cross( &self, short_moving_average: usize, long_moving_average: usize, ) -> Option<Vec<usize>>

Implementors