pub trait GenericSmartChan<T> {
fn try_send(&self, x: T) -> bool;
}Things that can send multiple messages and can detect when the receiver is closed
fn try_send(&self, x: T) -> boolSends a message, or report if the receiver has closed the connection.
MegaPipe<T>SharedChan<T>Chan<T>SharedChan<T>Chan<T>
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