Trait _IterTrait 

pub trait _IterTrait<'a, T>
where
    T: 'a,
    Self: Iterator<Item = T> + ExactSizeIterator<Item = T> + DoubleEndedIterator + CloneDyn,
{ }

Trait that encapsulates an iterator with specific characteristics and implemetning CloneDyn.

The _IterTrait trait is designed to represent iterators that may yield references to items ( &'a T ). These iterators must also implement the ExactSizeIterator and DoubleEndedIterator traits. This combination ensures that the iterator can :

• Provide an exact size hint ( ExactSizeIterator ),
• Be traversed from both ends ( DoubleEndedIterator ).

Additionally, the iterator must implement the CloneDyn trait, which allows cloning of trait objects.

Example

use iter_tools ::_IterTrait;

// Example struct that implements Iterator, ExactSizeIterator, DoubleEndedIterator, and CloneDyn.
#[ derive( Clone ) ]
struct MyIterator
{
  // internal fields
}

impl Iterator for MyIterator
{
  type Item = i32;

  fn next( &mut self ) -> Option< Self ::Item >
  {
    // implementation
    Some( 1 )
}
}

impl ExactSizeIterator for MyIterator
{
  fn len( &self ) -> usize
  {
    // implementation
    1
}
}

impl DoubleEndedIterator for MyIterator
{
  fn next_back( &mut self ) -> Option< Self ::Item >
  {
    // implementation
    Some( 1 )
}
}

Trait Implementations

impl<'c, T> Clone for Box<dyn _IterTrait<'c, T> + 'c>

Available on crate feature iter_trait and (non-crate feature no_std or crate feature use_alloc) only.

Implement Clone for boxed _IterTrait trait objects.

This allows cloning of boxed iterators that implement _IterTrait.

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'c, T> Clone for Box<dyn _IterTrait<'c, T> + Send + 'c>

Available on crate feature iter_trait and (non-crate feature no_std or crate feature use_alloc) only.

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'c, T> Clone for Box<dyn _IterTrait<'c, T> + Send + Sync + 'c>

Available on crate feature iter_trait and (non-crate feature no_std or crate feature use_alloc) only.

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'c, T> Clone for Box<dyn _IterTrait<'c, T> + Sync + 'c>

Available on crate feature iter_trait and (non-crate feature no_std or crate feature use_alloc) only.

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

Implementors

impl<'a, T, I> _IterTrait<'a, T> for I

where T: 'a, Self: Iterator<Item = T> + ExactSizeIterator<Item = T> + DoubleEndedIterator + CloneDyn,

Available on crate feature iter_trait only.