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stream: add next and map utility fn (#1962)

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Introduces `StreamExt` trait. This trait will be used to add utility functions
to make working with streams easier. This patch includes two functions:

* `next`: a future returning the item in the stream.
* `map`: transform each item in the stream.
This commit is contained in:
Artem Vorotnikov
2019-12-18 11:57:22 -08:00
committed by Carl Lerche
parent b0836ece7a
commit 4c645866ef
42 changed files with 295 additions and 57 deletions
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tokio-util/src/codec/framed.rs
+1 -2
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@@ -3,10 +3,9 @@ use crate::codec::encoder::Encoder;
use crate::codec::framed_read::{framed_read2, framed_read2_with_buffer, FramedRead2};
use crate::codec::framed_write::{framed_write2, framed_write2_with_buffer, FramedWrite2};
use tokio::io::{AsyncBufRead, AsyncRead, AsyncWrite};
use tokio::{io::{AsyncBufRead, AsyncRead, AsyncWrite}, stream::Stream};
use bytes::BytesMut;
use futures_core::Stream;
use futures_sink::Sink;
use pin_project_lite::pin_project;
use std::fmt;