Struct core_extensions::iterators::IterConstructor

source · [−]

pub struct IterConstructor<F>(pub F);

Available on crate feature iterators only.

Expand description

Uses a closure to construct Iterators.

This can turn this into an Iterator (with IntoIterator::into_iter) multiple times if the closure is Copy.

Example

use core_extensions::iterators::IterConstructor;

let list = vec!["hello", "world"];

let constructor = IterConstructor(||{
    list.iter().enumerate().map(|(i,v)| v.repeat(i) )
});

for _ in 0..2 {
    assert_eq!(
        constructor.into_iter().collect::<Vec<_>>(),
        ["".to_string(), "world".to_string()],
    );
}

Tuple Fields

0: F

Trait Implementations

impl<F: Clone> Clone for IterConstructor<F>

fn clone(&self) -> IterConstructor<F>

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl<F: Debug> Debug for IterConstructor<F>

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

Formats the value using the given formatter. Read more

impl<F, I> IntoIterator for IterConstructor<F> where
F: FnOnce() -> I,
I: IntoIterator,

type Item = <I as IntoIterator>::Item

The type of the elements being iterated over.

type IntoIter = <I as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more

impl<F: Copy> Copy for IterConstructor<F>

Auto Trait Implementations

impl<F> RefUnwindSafe for IterConstructor<F> where
F: RefUnwindSafe,

impl<F> Send for IterConstructor<F> where
F: Send,

impl<F> Sync for IterConstructor<F> where
F: Sync,

impl<F> Unpin for IterConstructor<F> where
F: Unpin,

impl<F> UnwindSafe for IterConstructor<F> where
F: UnwindSafe,

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AsPhantomData for T where
T: ?Sized,

fn as_phantom(&self) -> PhantomData<Self>

Available on crate feature phantom only.

Gets a PhantomData<Self>. Read more

fn as_phantom_covariant(&self) -> PhantomData<fn() -> Self>

Available on crate feature phantom only.

Gets a PhantomData<fn() -> Self>, a covariant PhantomData.

fn as_phantom_contra(&self) -> PhantomData<fn(_: Self)>

Available on crate feature phantom only.

Gets a PhantomData<fn(Self)>, a contravariant PhantomData.

fn as_phantom_invariant(&self) -> PhantomData<fn(_: Self) -> Self>

Available on crate feature phantom only.

Gets a PhantomData<fn(Self) -> Self>, an invariant PhantomData.

const PHANTOM: PhantomData<Self> = PhantomData

Available on crate feature phantom only.

Gets a PhantomData<Self>. Read more

const PHANTOM_COVARIANT: PhantomData<fn() -> Self> = PhantomData

Available on crate feature phantom only.

Constructs a PhantomData<fn() -> T>, a covariant PhantomData. Read more

const PHANTOM_CONTRA: PhantomData<fn(_: Self)> = PhantomData

Available on crate feature phantom only.

Gets a PhantomData<fn(Self)>, a contravariant PhantomData. Read more

const PHANTOM_INVARIANT: PhantomData<fn(_: Self) -> Self> = PhantomData

Available on crate feature phantom only.

Gets a PhantomData<fn(Self) -> Self>, an invariant PhantomData. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> CallExt for T where
T: ?Sized,

fn ref_call<P>(&self, params: P) -> Self::Returns where
Self: CallRef<P>,

Available on crate feature callable only.

For calling CallRef::ref_call_, with the ability to specify the types of the arguments.. Read more

fn mut_call<P>(&mut self, params: P) -> Self::Returns where
Self: CallMut<P>,

Available on crate feature callable only.

For calling CallMut::mut_call_, with the ability to specify the types of the arguments.. Read more

fn into_call<P>(self, params: P) -> Self::Returns where
Self: Sized,
Self: CallInto<P>,

Available on crate feature callable only.

For calling CallInto::into_call_, with the ability to specify the types of the arguments.. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.