Trait tuple_arity::Arity

pub trait Arity {
    fn arity() -> usize;
}

Trait for getting the arity of a value. You shouldn't need to impl this yourself.

Required methods

fn arity() -> usize

Gets the arity of the type.

Example

use tuple_arity::Arity;
 
assert_eq!(0, <()>::arity());
assert_eq!(1, <(u8,)>::arity());
assert_eq!(2, <(u8, u8)>::arity());
assert_eq!(3, <(u8, u8, u8)>::arity());
assert_eq!(4, <(u8, u8, u8, u8)>::arity());

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Implementations on Foreign Types

impl Arity for ()

fn arity() -> usize

impl<T1> Arity for (T1,)

fn arity() -> usize

impl<T1, T2> Arity for (T1, T2)

fn arity() -> usize

impl<T1, T2, T3> Arity for (T1, T2, T3)

fn arity() -> usize

impl<T1, T2, T3, T4> Arity for (T1, T2, T3, T4)

fn arity() -> usize

impl<T1, T2, T3, T4, T5> Arity for (T1, T2, T3, T4, T5)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6> Arity for (T1, T2, T3, T4, T5, T6)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7> Arity for (T1, T2, T3, T4, T5, T6, T7)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7, T8> Arity for (T1, T2, T3, T4, T5, T6, T7, T8)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7, T8, T9> Arity for (T1, T2, T3, T4, T5, T6, T7, T8, T9)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> Arity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Arity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)

fn arity() -> usize

impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Arity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)

fn arity() -> usize

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Implementors

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