Struct core_extensions::iterators::IterConstructor

pub struct IterConstructor<F>(pub F);

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> Freeze for IterConstructor<F>
where F: Freeze,

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

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> SelfOps for T
where T: ?Sized,

fn eq_id(&self, other: &Self) -> bool

Compares the address of self with the address of other. Read more

fn piped<F, U>(self, f: F) -> U
where F: FnOnce(Self) -> U, Self: Sized,

Emulates the pipeline operator, allowing method syntax in more places. Read more

fn piped_ref<'a, F, U>(&'a self, f: F) -> U
where F: FnOnce(&'a Self) -> U,

The same as piped except that the function takes &Self Useful for functions that take &Self instead of Self. Read more

fn piped_mut<'a, F, U>(&'a mut self, f: F) -> U
where F: FnOnce(&'a mut Self) -> U,

The same as piped, except that the function takes &mut Self. Useful for functions that take &mut Self instead of Self.

fn mutated<F>(self, f: F) -> Self
where F: FnOnce(&mut Self), Self: Sized,

Mutates self using a closure taking self by mutable reference, passing it along the method chain. Read more

fn observe<F>(self, f: F) -> Self
where F: FnOnce(&Self), Self: Sized,

Observes the value of self, passing it along unmodified. Useful in long method chains. Read more

fn into_<T>(self) -> T
where Self: Into<T>,

Performs a conversion with Into. using the turbofish .into_::<_>() syntax. Read more

fn as_ref_<T: ?Sized>(&self) -> &T
where Self: AsRef<T>,

Performs a reference to reference conversion with AsRef, using the turbofish .as_ref_::<_>() syntax. Read more

fn as_mut_<T: ?Sized>(&mut self) -> &mut T
where Self: AsMut<T>,

Performs a mutable reference to mutable reference conversion with AsMut, using the turbofish .as_mut_::<_>() syntax. Read more

fn drop_(self)
where Self: Sized,

Drops self using method notation. Alternative to std::mem::drop. Read more

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.

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.

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

Performs the conversion.

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

type Type = T

This is always Self.

fn into_type(self) -> Self::Type
where Self: Sized, Self::Type: Sized,

Converts a value back to the original type.

fn as_type(&self) -> &Self::Type

Converts a reference back to the original type.

fn as_type_mut(&mut self) -> &mut Self::Type

Converts a mutable reference back to the original type.

fn into_type_box(self: Box<Self>) -> Box<Self::Type>

Converts a box back to the original type.

fn into_type_arc(this: Arc<Self>) -> Arc<Self::Type>

Converts an Arc back to the original type. Read more

fn into_type_rc(this: Rc<Self>) -> Rc<Self::Type>

Converts an Rc back to the original type. Read more

fn from_type(this: Self::Type) -> Self
where Self: Sized, Self::Type: Sized,

Converts a value back to the original type.

fn from_type_ref(this: &Self::Type) -> &Self

Converts a reference back to the original type.

fn from_type_mut(this: &mut Self::Type) -> &mut Self

Converts a mutable reference back to the original type.

fn from_type_box(this: Box<Self::Type>) -> Box<Self>

Converts a box back to the original type.

fn from_type_arc(this: Arc<Self::Type>) -> Arc<Self>

Converts an Arc back to the original type.

fn from_type_rc(this: Rc<Self::Type>) -> Rc<Self>

Converts an Rc back to the original type.