Enum QueueSize 

pub enum QueueSize {
    Limitless,
    Limited(usize),
}

The size of the queue.
キューのサイズ。

Variants

Limitless

The queue has no capacity limit.
キューに容量制限がない。

Limited(usize)

The queue has a capacity limit.
キューに容量制限がある。

Implementations

impl QueueSize

pub fn is_limitless(&self) -> bool

Returns whether the queue has no capacity limit.
キューに容量制限がないかどうかを返します。

Return Value / 戻り値

• true - If the queue has no capacity limit. / キューに容量制限がない場合。
• false - If the queue has a capacity limit. / キューに容量制限がある場合。

pub fn to_option(&self) -> Option<usize>

Converts to an option type.
オプション型に変換します。

Return Value / 戻り値

• None - If the queue has no capacity limit. / キューに容量制限がない場合。
• Some(num) - If the queue has a capacity limit. / キューに容量制限がある場合。

pub fn to_usize(&self) -> usize

Converts to a usize type.
usize型に変換します。

Return Value / 戻り値

• usize::MAX - If the queue has no capacity limit. / キューに容量制限がない場合。
• num - If the queue has a capacity limit. / キューに容量制限がある場合。

Trait Implementations

impl Add for QueueSize

type Output = QueueSize

The resulting type after applying the + operator.

fn add(self, other: QueueSize) -> QueueSize

Performs the + operation.

impl Clone for QueueSize

fn clone(&self) -> QueueSize

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueueSize

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

Formats the value using the given formatter.

impl PartialEq for QueueSize

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for QueueSize

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.