Trait Perpetuity 

pub trait Perpetuity: Sized {
    type Item;

    // Required method
    fn next_item(&mut self) -> Self::Item;

    // Provided methods
    fn into_iter(self) -> IntoIter<Self> { ... }
    fn take(self, count: usize) -> Take<Self>  { ... }
}

Like Iterator, but returns items directly, rather than Options.

Required Associated Types

type Item

Required Methods

fn next_item(&mut self) -> Self::Item

Provided Methods

fn into_iter(self) -> IntoIter<Self>

fn take(self, count: usize) -> Take<Self>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Perpetuity for RangeFrom<i8>

type Item = i8

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<i16>

type Item = i16

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<i32>

type Item = i32

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<i64>

type Item = i64

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<i128>

type Item = i128

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<u8>

type Item = u8

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<u16>

type Item = u16

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<u32>

type Item = u32

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<u64>

type Item = u64

fn next_item(&mut self) -> Self::Item

impl Perpetuity for RangeFrom<u128>

type Item = u128

fn next_item(&mut self) -> Self::Item

Implementors

impl<T, F: FnMut(&T) -> T> Perpetuity for Successors<T, F>

type Item = T