Trait PluralizeCount

pub trait PluralizeCount {
    type Error: Into<Error>;

    // Required method
    fn is_singular(&self) -> Result<bool, Self::Error>;
}

An integer that can have the value +1 and maybe -1.

Required Associated Types

type Error: Into<Error>

A possible error that can occur while checking the value.

Required Methods

fn is_singular(&self) -> Result<bool, Self::Error>

Returns true if and only if the value is ±1.

Implementations on Foreign Types

impl PluralizeCount for i8

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for i16

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for i32

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for i64

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for i128

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for isize

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for u8

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for u16

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for u32

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for u64

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for u128

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for usize

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroI8

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroI16

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroI32

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroI64

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroI128

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroIsize

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroU8

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroU16

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroU32

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroU64

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroU128

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl PluralizeCount for NonZeroUsize

type Error = Infallible

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T> PluralizeCount for Pin<T>

where T: Deref, <T as Deref>::Target: PluralizeCount,

type Error = <<T as Deref>::Target as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for &T

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for &mut T

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for Box<T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for Rc<T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for Arc<T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for Ref<'_, T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for RefMut<'_, T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for MutexGuard<'_, T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for RwLockReadGuard<'_, T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

impl<T: PluralizeCount + ?Sized> PluralizeCount for RwLockWriteGuard<'_, T>

type Error = <T as PluralizeCount>::Error

fn is_singular(&self) -> Result<bool, Self::Error>

Implementors