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add must_use for Future (#450)

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Guanqun Lu
2018-09-04 18:30:57 +08:00
committed by Toralf Wittner
parent 02576eecf1
commit ee9be6f0c9
11 changed files with 14 additions and 0 deletions
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transports/tcp/src/lib.rs
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@ -192,6 +192,7 @@ fn multiaddr_to_socketaddr(addr: &Multiaddr) -> Result<SocketAddr, ()> {
/// Future that dials a TCP/IP address.
#[derive(Debug)]
#[must_use = "futures do nothing unless polled"]
pub struct TcpDialFut {
inner: ConnectFuture,
/// Address we're dialing. Extracted when the `Future` finishes.