A rustlang adapter for writing to multiple sources, adapted from the standard library's std::io::Write#broadcast
which has since been deprecated.
rustdoc api documentation can be found here
The currently unstable/deprecated std library function looks like this
rust
let broadcaster = writera.broadcast(writerb);
In broadcast this looks like
rust
let broadcaster = broadcast::BroadcastWriter::new(
writera, writerb
);
Doug Tangren (softprops) 2015