Trait Contains 

pub trait Contains<'a, T: Eq + Hash> {
    type Item: Borrow<T>;
    type Iter: Iterator<Item = Self::Item>;

    // Required methods
    fn contains(&self, key: &T) -> bool;
    fn contains_iter(&'a self) -> Self::Iter;
}

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

Required Associated Types

type Item: Borrow<T>

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

type Iter: Iterator<Item = Self::Item>

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

Required Methods

fn contains(&self, key: &T) -> bool

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

fn contains_iter(&'a self) -> Self::Iter

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

Implementations on Foreign Types

impl<'a, T: 'a + Eq + Hash, S: BuildHasher> Contains<'a, T> for HashSet<T, S>

type Item = &'a T

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

type Iter = Iter<'a, T>

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

fn contains(&self, key: &T) -> bool

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

fn contains_iter(&'a self) -> Self::Iter

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

impl<'a, T: 'a + Eq + Hash, U: 'a, S: BuildHasher> Contains<'a, T> for HashMap<T, U, S>

type Item = &'a T

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

type Iter = Keys<'a, T, U>

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

fn contains(&self, key: &T) -> bool

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

fn contains_iter(&'a self) -> Self::Iter

👎Deprecated since 3.1.0: This crate has been marked for formal inclusion in the Agave Unstable API. From v4.0.0 onward, the agave-unstable-api crate feature must be specified to acknowledge use of an interface that may break without warning.

Implementors

impl<'a, T: 'a + Eq + Hash + Copy> Contains<'a, T> for T

type Item = &'a T

type Iter = Once<&'a T>