Struct abi_stable::std_types::UTypeId

#[repr(C)]
pub struct UTypeId { /* private fields */ }

An ffi-safe equivalent of std::any::TypeId that can compare types across dynamic libraries.

No UTypeId constructed in different dynamic libraries compare equal.

Example

use abi_stable::std_types::UTypeId;

assert_eq!(UTypeId::new::<()>(), UTypeId::new::<()>());
assert_eq!(UTypeId::new::<Box<String>>(), UTypeId::new::<Box<String>>());

assert_ne!(UTypeId::new::<()>(), UTypeId::new::<Vec<()>>());
assert_ne!(UTypeId::new::<Box<String>>(), UTypeId::new::<&str>());

Implementations

impl UTypeId

pub fn new<T>() -> Self

where T: 'static,

Constructs UTypeId from a type that satisfies the 'static bound.

Example

use abi_stable::std_types::UTypeId;
use std::collections::HashMap;

let id = UTypeId::new::<HashMap<String, String>>();

Trait Implementations

impl Clone for UTypeId

fn clone(&self) -> UTypeId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UTypeId

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

Formats the value using the given formatter.

impl GetStaticEquivalent_ for UTypeId

type StaticEquivalent = _static_UTypeId

The 'static equivalent of Self

impl Hash for UTypeId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UTypeId

fn cmp(&self, other: &UTypeId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for UTypeId

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

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

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

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

impl PartialOrd for UTypeId

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl StableAbi for UTypeId

type IsNonZeroType = False

Whether this type has a single invalid bit-pattern.

const LAYOUT: &'static TypeLayout = _

The layout of the type provided by implementors.

const ABI_CONSTS: AbiConsts = _

const-equivalents of the associated types.

impl Copy for UTypeId

impl Eq for UTypeId

impl Send for UTypeId

impl StructuralEq for UTypeId

impl StructuralPartialEq for UTypeId

impl Sync for UTypeId