array__ops 1.0.3

A selection of useful array operations
Documentation 
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use core::ops::Sub;

use crate::form::ArrayForm;

use super::{ArrayMap, ArrayZipWith};

#[const_trait]
pub trait ArraySub<T, const N: usize>: ArrayMap<T, N>
{
    fn sub_all<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs>>::Output; N]
    where
        T: Sub<Rhs>,
        Rhs: Copy;
        
    async fn sub_all_async<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs>>::Output; N]
    where
        T: Sub<Rhs>,
        Rhs: Copy;
        
    fn sub_each<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs::Elem>>::Output; N]
    where
        T: Sub<Rhs::Elem>,
        Rhs: ArrayForm<N>;
        
    async fn sub_each_async<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs::Elem>>::Output; N]
    where
        T: Sub<Rhs::Elem>,
        Rhs: ArrayForm<N>;

    fn rsub_all<Lhs>(self, lhs: Lhs) -> [<Lhs as Sub<T>>::Output; N]
    where
        Lhs: Sub<T> + Copy;
        
    async fn rsub_all_async<Lhs>(self, lhs: Lhs) -> [<Lhs as Sub<T>>::Output; N]
    where
        Lhs: Sub<T> + Copy;
        
    fn rsub_each<Lhs>(self, lhs: Lhs) -> [<Lhs::Elem as Sub<T>>::Output; N]
    where
        Lhs: ArrayForm<N, Elem: Sub<T>>;
        
    async fn rsub_each_async<Lhs>(self, lhs: Lhs) -> [<Lhs::Elem as Sub<T>>::Output; N]
    where
        Lhs: ArrayForm<N, Elem: Sub<T>>;
}

impl<T, const N: usize> ArraySub<T, N> for [T; N]
{
    fn sub_all<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs>>::Output; N]
    where
        T: Sub<Rhs>,
        Rhs: Copy
    {
        self.map(|x| x - rhs)
    }
        
    async fn sub_all_async<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs>>::Output; N]
    where
        T: Sub<Rhs>,
        Rhs: Copy
    {
        self.map_async(async |x| x - rhs).await
    }
        
    fn sub_each<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs::Elem>>::Output; N]
    where
        T: Sub<Rhs::Elem>,
        Rhs: ArrayForm<N>
    {
        self.zip_with(rhs, |x, y| x - y)
    }
        
    async fn sub_each_async<Rhs>(self, rhs: Rhs) -> [<T as Sub<Rhs::Elem>>::Output; N]
    where
        T: Sub<Rhs::Elem>,
        Rhs: ArrayForm<N>
    {
        self.zip_async_with(rhs, async |x, y| x - y).await
    }

    fn rsub_all<Lhs>(self, lhs: Lhs) -> [<Lhs as Sub<T>>::Output; N]
    where
        Lhs: Sub<T> + Copy
    {
        self.map(|x| lhs - x)
    }
        
    async fn rsub_all_async<Lhs>(self, lhs: Lhs) -> [<Lhs as Sub<T>>::Output; N]
    where
        Lhs: Sub<T> + Copy
    {
        self.map_async(async |x| lhs - x).await
    }
        
    fn rsub_each<Lhs>(self, lhs: Lhs) -> [<Lhs::Elem as Sub<T>>::Output; N]
    where
        Lhs: ArrayForm<N, Elem: Sub<T>>
    {
        self.zip_with(lhs, |x, y| y - x)
    }
        
    async fn rsub_each_async<Lhs>(self, lhs: Lhs) -> [<Lhs::Elem as Sub<T>>::Output; N]
    where
        Lhs: ArrayForm<N, Elem: Sub<T>>
    {
        self.zip_async_with(lhs, async |x, y| y - x).await
    }
}