Trait Query 

pub trait Query<'w> {
    type Iter: Iterator + 'w;

    // Required methods
    fn select(container: &'w Container) -> Self::Iter;
    fn matches(container: &'w Container) -> bool;
}

Trait definition of a Query

Required Associated Types

type Iter: Iterator + 'w

Required Methods

fn select(container: &'w Container) -> Self::Iter

fn matches(container: &'w Container) -> bool

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<'w, A, B, C, D> Query<'w> for (A, B, C, D)

where A: Selector<'w> + 'w, B: Selector<'w> + 'w, C: Selector<'w> + 'w, D: Selector<'w> + 'w,

type Iter = Zipper<'w, (<A as Selector<'w>>::Iter, <B as Selector<'w>>::Iter, <C as Selector<'w>>::Iter, <D as Selector<'w>>::Iter)>

fn select(container: &'w Container) -> Self::Iter

fn matches(container: &'w Container) -> bool

impl<'w, B, C, D> Query<'w> for (B, C, D)

where B: Selector<'w> + 'w, C: Selector<'w> + 'w, D: Selector<'w> + 'w,

type Iter = Zipper<'w, (<B as Selector<'w>>::Iter, <C as Selector<'w>>::Iter, <D as Selector<'w>>::Iter)>

fn select(container: &'w Container) -> Self::Iter

fn matches(container: &'w Container) -> bool

impl<'w, C, D> Query<'w> for (C, D)

where C: Selector<'w> + 'w, D: Selector<'w> + 'w,

type Iter = Zipper<'w, (<C as Selector<'w>>::Iter, <D as Selector<'w>>::Iter)>

fn select(container: &'w Container) -> Self::Iter

fn matches(container: &'w Container) -> bool

impl<'w, D> Query<'w> for (D,)

where D: Selector<'w> + 'w,

type Iter = Zipper<'w, (<D as Selector<'w>>::Iter,)>

fn select(container: &'w Container) -> Self::Iter

fn matches(container: &'w Container) -> bool

Implementors