Struct rustc_resolve::PerNS

pub struct PerNS<T> {
    pub value_ns: T,
    pub type_ns: T,
    pub macro_ns: 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?

Just a helper ‒ separate structure for each namespace.

Fields

value_ns: 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?

type_ns: 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?

macro_ns: 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?

Methods

impl<T> PerNS<T>

pub fn map<U, F>(self, f: F) -> PerNS<U> where     F: FnMut(T) -> U,

🔬 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> PerNS<Option<T>>

pub fn is_empty(&self) -> bool

🔬 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?

Returns whether all the items in this collection are None.

pub fn present_items(     self ) -> impl Iterator<Item = 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?

Returns an iterator over the items which are Some.

Trait Implementations

impl<T> Default for PerNS<T> where     T: Default,

fn default() -> PerNS<T>

Returns the "default value" for a type.

impl<T> Index<Namespace> for PerNS<T>

type Output = T

The returned type after indexing.

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

fn index(&self, ns: Namespace) -> &T

Performs the indexing (container[index]) operation.

impl<T> Clone for PerNS<T> where     T: Clone,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Copy for PerNS<T> where     T: Copy,

impl<T> IndexMut<Namespace> for PerNS<T>

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

fn index_mut(&mut self, ns: Namespace) -> &mut T

Performs the mutable indexing (container[index]) operation.

impl<T> Debug for PerNS<T> where     T: Debug,

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.