Trait Filter 

pub trait Filter {
    // Required method
    fn matches<E>(&self, evt: E) -> bool
       where E: ToEvent;

    // Provided methods
    fn and_when<U>(self, other: U) -> And<Self, U>
       where Self: Sized { ... }
    fn or_when<U>(self, other: U) -> Or<Self, U>
       where Self: Sized { ... }
}

A filter over Events.

Filters can be evaluated with a call to Filter::matches.

Required Methods

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

Evaluate an event against the filter.

If this method return true then the event has passed the filter. If this method returns false then the event has failed the filter.

Provided Methods

fn and_when<U>(self, other: U) -> And<Self, U>

where Self: Sized,

self && other.

If self evaluates to true then other will be evaluated.

fn or_when<U>(self, other: U) -> Or<Self, U>

where Self: Sized,

self || other.

If self evaluates to false then other will be evaluated.

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 Filter for fn(Event<'_, &dyn ErasedProps>) -> bool

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

impl<'a, F> Filter for &'a F

where F: Filter + ?Sized,

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

impl<'a, F> Filter for Box<F>

where F: Filter + 'a + ?Sized,

Available on crate feature alloc only.

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

impl<'a, F> Filter for Arc<F>

where F: Filter + 'a + ?Sized,

Available on crate feature alloc only.

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

impl<F> Filter for Option<F>

where F: Filter,

fn matches<E>(&self, evt: E) -> bool

where E: ToEvent,

Implementors

impl Filter for Always

impl Filter for KindFilter

impl Filter for Empty

impl<'a> Filter for dyn ErasedFilter + 'a

impl<'a> Filter for dyn ErasedFilter + Send + Sync + 'a

impl<F> Filter for FromFn<F>

where F: Fn(Event<'_, &dyn ErasedProps>) -> bool,

impl<L: for<'a> FromValue<'a> + Ord + Default> Filter for MinLevelFilter<L>

impl<L: for<'a> FromValue<'a> + Ord + Default> Filter for MinLevelPathMap<L>

impl<T> Filter for AssertInternal<T>

where T: Filter,

impl<T, U> Filter for And<T, U>

where T: Filter, U: Filter,

impl<T, U> Filter for Or<T, U>

where T: Filter, U: Filter,