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use core::ops::SubAssign;
use crate::form::ArrayForm;
use super::ArrayMeet;
#[const_trait]
pub trait ArraySubAssign<T, const N: usize>: ArrayMeet<T, N>
{
/// Applies the [`-=`](core::ops::SubAssign) operator to all elements, copying the operand for each operation.
///
/// # Examples
///
/// ```rust
/// use array__ops::ops::*;
///
/// let mut a = [0, 1, 2, 3, 4, 5, 6, 7];
///
/// a.sub_assign_all(2);
///
/// assert_eq!(a, [-2, -1, 0, 1, 2, 3, 4, 5]);
/// ```
fn sub_assign_all<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs>,
Rhs: Copy;
/// Asynchronously applies the [`-=`](core::ops::SubAssign) operator to all elements, copying the operand for each operation.
///
/// This way, each operation is a seperate `async` task that may be executed in parallel, but with some extra overhead.
///
/// # Examples
///
/// ```rust
/// use array__ops::ops::*;
///
/// # tokio_test::block_on(async {
/// let mut a = [0, 1, 2, 3, 4, 5, 6, 7];
///
/// a.sub_assign_all_async(2).await;
///
/// assert_eq!(a, [-2, -1, 0, 1, 2, 3, 4, 5]);
/// # })
/// ```
async fn sub_assign_all_async<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs>,
Rhs: Copy;
/// Applies [`-=`](core::ops::SubAssign) `rhs[..]` to each element pairwise.
///
/// # Examples
///
/// ```rust
/// use array__ops::ops::*;
///
/// let mut a = [0, 1, 2, 3, 4, 5, 6, 7];
/// let b = [7, 8, 9, 10, 11, 12, 13, 14];
///
/// a.sub_assign_each(b);
///
/// assert_eq!(a, [-7, -7, -7, -7, -7, -7, -7, -7]);
/// ```
fn sub_assign_each<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs::Elem>,
Rhs: ArrayForm<N>;
async fn sub_assign_each_async<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs::Elem>,
Rhs: ArrayForm<N>;
}
impl<T, const N: usize> ArraySubAssign<T, N> for [T; N]
{
fn sub_assign_all<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs>,
Rhs: Copy
{
self.meet_all_mut(rhs, SubAssign::sub_assign)
}
async fn sub_assign_all_async<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs>,
Rhs: Copy
{
self.meet_all_mut_async(rhs, async |x, rhs| x.sub_assign(rhs)).await
}
fn sub_assign_each<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs::Elem>,
Rhs: ArrayForm<N>
{
self.meet_each_mut(rhs, SubAssign::sub_assign)
}
async fn sub_assign_each_async<Rhs>(&mut self, rhs: Rhs)
where
T: SubAssign<Rhs::Elem>,
Rhs: ArrayForm<N>
{
self.meet_each_mut_async(rhs, async |x, rhs| x.sub_assign(rhs)).await
}
}