Struct PutBack

struct PutBack<I> { ... }
where
    I: Iterator

An iterator adaptor that allows putting back a single item to the front of the iterator.

Iterator element type is I::Item.

Implementations

impl<I> PutBack<I>

fn with_value(self: Self, value: <I as >::Item) -> Self

put back value value (builder method)

fn into_parts(self: Self) -> (Option<<I as >::Item>, I)

Split the PutBack into its parts.

fn put_back(self: &mut Self, x: <I as >::Item) -> Option<<I as >::Item>

Put back a single value to the front of the iterator.

If a value is already in the put back slot, it is returned.

impl<I> Clone for PutBack<I>

fn clone(self: &Self) -> PutBack<I>

impl<I> Debug for PutBack<I>

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

impl<I> Freeze for PutBack<I>

impl<I> IntoIterator for PutBack<I>

fn into_iter(self: Self) -> I

impl<I> Iterator for PutBack<I>

fn next(self: &mut Self) -> Option<<Self as >::Item>
fn size_hint(self: &Self) -> (usize, Option<usize>)
fn count(self: Self) -> usize
fn last(self: Self) -> Option<<Self as >::Item>
fn nth(self: &mut Self, n: usize) -> Option<<Self as >::Item>
fn all<G>(self: &mut Self, f: G) -> bool
where
    G: FnMut(<Self as >::Item) -> bool
fn fold<Acc, G>(self: Self, init: Acc, f: G) -> Acc
where
    G: FnMut(Acc, <Self as >::Item) -> Acc

impl<I> PeekingNext for PutBack<I>

fn peeking_next<F>(self: &mut Self, accept: F) -> Option<<Self as >::Item>
where
    F: FnOnce(&<Self as >::Item) -> bool

impl<I> RefUnwindSafe for PutBack<I>

impl<I> Send for PutBack<I>

impl<I> Sync for PutBack<I>

impl<I> Unpin for PutBack<I>

impl<I> UnsafeUnpin for PutBack<I>

impl<I> UnwindSafe for PutBack<I>

impl<IT> MultiUnzip for PutBack<I>

fn multiunzip(self: Self)

impl<IT, A, FromA> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA)

impl<IT, A, FromA, B, FromB> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB)

impl<IT, A, FromA, B, FromB, C, FromC> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ, K, FromK> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK)

impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ, K, FromK, L, FromL> MultiUnzip for PutBack<I>

fn multiunzip(self: Self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK, FromL)

impl<T> Any for PutBack<I>

fn type_id(self: &Self) -> TypeId

impl<T> Borrow for PutBack<I>

fn borrow(self: &Self) -> &T

impl<T> BorrowMut for PutBack<I>

fn borrow_mut(self: &mut Self) -> &mut T

impl<T> CloneToUninit for PutBack<I>

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

impl<T> From for PutBack<I>

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Itertools for PutBack<I>

impl<T> ToOwned for PutBack<I>

fn to_owned(self: &Self) -> T
fn clone_into(self: &Self, target: &mut T)

impl<T, U> Into for PutBack<I>

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

impl<T, U> TryFrom for PutBack<I>

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto for PutBack<I>

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>