druid_shell

Struct Counter

Source 
pub struct Counter(/* private fields */);
Expand description

An incrementing counter for generating unique ids.

This can be used safely from multiple threads.

The counter will overflow if next() is called 2^64 - 2 times. If this is possible for your application, and reuse would be undesirable, use something else.

Implementations§

Source§

impl Counter

Source

pub const fn new() -> Counter

Create a new counter.

Source

pub const unsafe fn new_unchecked(init: u64) -> Counter

Creates a new counter with a given starting value.

§Safety

The value must not be zero.

Source

pub fn next(&self) -> u64

Return the next value.

Source

pub fn next_nonzero(&self) -> NonZeroU64

Return the next value, as a NonZeroU64.

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> RoundFrom<T> for T

Source§

fn round_from(x: T) -> T

Performs the conversion.
Source§

impl<T, U> RoundInto<U> for T
where U: RoundFrom<T>,

Source§

fn round_into(self) -> U

Performs the conversion.
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more