Enum rustc::middle::resolve_lifetime::Set1

pub enum Set1<T> {
    Empty,
    One(T),
    Many,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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A set containing, at most, one known element. If two distinct values are inserted into a set, then it becomes Many, which can be used to detect ambiguities.

Variants

Empty

🔬 This is a nightly-only experimental API. (rustc_private)

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One(T)

🔬 This is a nightly-only experimental API. (rustc_private)

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Many

🔬 This is a nightly-only experimental API. (rustc_private)

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Methods

impl<T: PartialEq> Set1<T>

pub fn insert(&mut self, value: T)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Trait Implementations

impl<'gcx, T> HashStable<StableHashingContext<'gcx>> for Set1<T> where
    T: HashStable<StableHashingContext<'gcx>>, 

fn hash_stable<W: StableHasherResult>(
    &self,
    hcx: &mut StableHashingContext<'gcx>,
    hasher: &mut StableHasher<W>
)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<T: Copy> Copy for Set1<T>

impl<T: Clone> Clone for Set1<T>

fn clone(&self) -> Set1<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: PartialEq> PartialEq for Set1<T>

fn eq(&self, __arg_0: &Set1<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Set1<T>) -> bool

This method tests for !=.

impl<T: Eq> Eq for Set1<T>

impl<T: Encodable> Encodable for Set1<T>

fn encode<__ST: Encoder>(&self, __arg_0: &mut __ST) -> Result<(), __ST::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<T: Decodable> Decodable for Set1<T>

fn decode<__DT: Decoder>(__arg_0: &mut __DT) -> Result<Set1<T>, __DT::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<T: Debug> Debug for Set1<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.