Enum List 

pub enum List<'a, T> {
    Borrowed(&'a [&'a T]),
    Owned(Vec<T>),
}

A list that can be either borrowed or owned.

This type is useful for const contexts where we need borrowed data, as well as for deserialization where we need owned data.

Variants

Borrowed(&'a [&'a T])

Borrowed slice of references, useful for const contexts.

Owned(Vec<T>)

Owned vector, used for deserialization.

Implementations

impl<'a, T> List<'a, T>

pub fn iter(&self) -> impl Iterator<Item = &T>

Returns an iterator over references to the items.

pub fn len(&self) -> usize

Returns the number of items in the list.

pub fn is_empty(&self) -> bool

Returns true if the list is empty.

pub const fn as_borrowed(&self) -> Option<&[&T]>

The borrowed slice of references if this list is borrowed.

pub fn as_owned(&self) -> Option<&Vec<T>>

The owned vector of values if this list is owned.

Trait Implementations

impl<'a, T: Clone> Clone for List<'a, T>

fn clone(&self) -> List<'a, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug> Debug for List<'a, T>

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

Formats the value using the given formatter.

impl<'a, T> Default for List<'a, T>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, T> From<&'a [&'a T]> for List<'a, T>

fn from(slice: &'a [&'a T]) -> Self

Converts to this type from the input type.

impl<'a, T> From<Vec<T>> for List<'a, T>

fn from(vec: Vec<T>) -> Self

Converts to this type from the input type.

impl<'a, T> PartialEq for List<'a, T>

where T: PartialEq,

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, T: Eq> Eq for List<'a, T>