forked from mirror/async-std
23 lines
933 B
Rust
23 lines
933 B
Rust
use crate::future::Future;
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use crate::stream::Stream;
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/// Trait to represent types that can be created by productming up a stream.
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///
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/// This trait is used to implement the [`product`] method on streams. Types which
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/// implement the trait can be generated by the [`product`] method. Like
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/// [`FromStream`] this trait should rarely be called directly and instead
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/// interacted with through [`Stream::product`].
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///
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/// [`product`]: trait.Product.html#tymethod.product
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/// [`FromStream`]: trait.FromStream.html
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/// [`Stream::product`]: trait.Stream.html#method.product
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#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
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#[cfg(any(feature = "unstable", feature = "docs"))]
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pub trait Product<A = Self>: Sized {
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/// Method which takes a stream and generates `Self` from the elements by
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/// multiplying the items.
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fn product<S, F>(stream: S) -> F
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where
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S: Stream<Item = A>,
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F: Future<Output = Self>;
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}
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