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".

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