| // check-pass |
| #![allow(unused_must_use)] |
| #![allow(dead_code)] |
| #![allow(unused_mut)] |
| use std::thread; |
| use std::sync::mpsc::Sender; |
| |
| type RingBuffer = Vec<f64> ; |
| type SamplesFn = Box<dyn FnMut(&RingBuffer) + Send>; |
| |
| enum Msg |
| { |
| GetSamples(String, SamplesFn), // sample set name, callback which receives samples |
| } |
| |
| fn foo(name: String, samples_chan: Sender<Msg>) { |
| thread::spawn(move|| { |
| let mut samples_chan = samples_chan; |
| |
| let callback: SamplesFn = Box::new(move |buffer| { |
| for i in 0..buffer.len() { |
| println!("{}: {}", i, buffer[i]) |
| } |
| }); |
| |
| samples_chan.send(Msg::GetSamples(name.clone(), callback)); |
| }).join(); |
| } |
| |
| pub fn main() {} |
