Struct std::sync::mpsc::TryIter1.15.0 [] [src]

pub struct TryIter<'a, T: 'a> { /* fields omitted */ }

An iterator that attempts to yield all pending values for a Receiver, created by try_iter.

None will be returned when there are no pending values remaining or if the corresponding channel has hung up.

This iterator will never block the caller in order to wait for data to become available. Instead, it will return None.

Examples

use std::sync::mpsc::channel;
use std::thread;
use std::time::Duration;

let (sender, receiver) = channel();

// Nothing is in the buffer yet
assert!(receiver.try_iter().next().is_none());
println!("Nothing in the buffer...");

thread::spawn(move || {
    sender.send(1).unwrap();
    sender.send(2).unwrap();
    sender.send(3).unwrap();
});

println!("Going to sleep...");
thread::sleep(Duration::from_secs(2)); // block for two seconds

for x in receiver.try_iter() {
    println!("Got: {}", x);
}Run

Trait Implementations

impl<'a, T: Debug + 'a> Debug for TryIter<'a, T>
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Formats the value using the given formatter. Read more

impl<'a, T> Iterator for TryIter<'a, T>
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The type of the elements being iterated over.

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Advances the iterator and returns the next value. Read more

1.0.0
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Returns the bounds on the remaining length of the iterator. Read more

1.0.0
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Consumes the iterator, counting the number of iterations and returning it. Read more

1.0.0
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Consumes the iterator, returning the last element. Read more

1.0.0
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Returns the nth element of the iterator. Read more

Important traits for StepBy<I>
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🔬 This is a nightly-only experimental API. (iterator_step_by #27741)

unstable replacement of Range::step_by

Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more

Important traits for Chain<A, B>
1.0.0
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Takes two iterators and creates a new iterator over both in sequence. Read more

Important traits for Zip<A, B>
1.0.0
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'Zips up' two iterators into a single iterator of pairs. Read more

Important traits for Map<I, F>
1.0.0
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Takes a closure and creates an iterator which calls that closure on each element. Read more

1.21.0
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Calls a closure on each element of an iterator. Read more

Important traits for Filter<I, P>
1.0.0
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Creates an iterator which uses a closure to determine if an element should be yielded. Read more

Important traits for FilterMap<I, F>
1.0.0
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Creates an iterator that both filters and maps. Read more

Important traits for Enumerate<I>
1.0.0
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Creates an iterator which gives the current iteration count as well as the next value. Read more

Important traits for Peekable<I>
1.0.0
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Creates an iterator which can use peek to look at the next element of the iterator without consuming it. Read more

Important traits for SkipWhile<I, P>
1.0.0
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Creates an iterator that [skip]s elements based on a predicate. Read more

Important traits for TakeWhile<I, P>
1.0.0
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Creates an iterator that yields elements based on a predicate. Read more

Important traits for Skip<I>
1.0.0
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Creates an iterator that skips the first n elements. Read more

Important traits for Take<I>
1.0.0
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Creates an iterator that yields its first n elements. Read more

Important traits for Scan<I, St, F>
1.0.0
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An iterator adaptor similar to [fold] that holds internal state and produces a new iterator. Read more

Important traits for FlatMap<I, U, F>
1.0.0
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Creates an iterator that works like map, but flattens nested structure. Read more

Important traits for Fuse<I>
1.0.0
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Creates an iterator which ends after the first [None]. Read more

Important traits for Inspect<I, F>
1.0.0
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Do something with each element of an iterator, passing the value on. Read more

Important traits for &'a mut I
1.0.0
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Borrows an iterator, rather than consuming it. Read more

1.0.0
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Transforms an iterator into a collection. Read more

1.0.0
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Consumes an iterator, creating two collections from it. Read more

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🔬 This is a nightly-only experimental API. (iterator_try_fold #45594)

An iterator method that applies a function as long as it returns successfully, producing a single, final value. Read more

1.0.0
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An iterator method that applies a function, producing a single, final value. Read more

1.0.0
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Tests if every element of the iterator matches a predicate. Read more

1.0.0
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Tests if any element of the iterator matches a predicate. Read more

1.0.0
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Searches for an element of an iterator that satisfies a predicate. Read more

1.0.0
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Searches for an element in an iterator, returning its index. Read more

1.0.0
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Searches for an element in an iterator from the right, returning its index. Read more

1.0.0
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Returns the maximum element of an iterator. Read more

1.0.0
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Returns the minimum element of an iterator. Read more

1.6.0
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Returns the element that gives the maximum value from the specified function. Read more

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Returns the element that gives the maximum value with respect to the specified comparison function. Read more

1.6.0
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Returns the element that gives the minimum value from the specified function. Read more

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Returns the element that gives the minimum value with respect to the specified comparison function. Read more

Important traits for Rev<I>
1.0.0
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Reverses an iterator's direction. Read more

1.0.0
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Converts an iterator of pairs into a pair of containers. Read more

Important traits for Cloned<I>
1.0.0
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Creates an iterator which [clone]s all of its elements. Read more

Important traits for Cycle<I>
1.0.0
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Repeats an iterator endlessly. Read more

1.11.0
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Sums the elements of an iterator. Read more

1.11.0
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Iterates over the entire iterator, multiplying all the elements Read more

1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

1.5.0
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Determines if the elements of this Iterator are equal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are unequal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically less than those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically less or equal to those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically greater than those of another. Read more

1.5.0
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Determines if the elements of this Iterator are lexicographically greater than or equal to those of another. Read more