python
    
    
import time
def main():
    routine_getTicker = exchange.Go("GetTicker")
    routine_getDepth = exchange.Go("GetDepth")
    routine_getTrades = exchange.Go("GetTrades")

    ts1 = time.time()
    ret1 = EventLoop(0)

    ts2 = time.time()
    ret2 = EventLoop(0)

    ts3 = time.time()
    ret3 = EventLoop(0)

    Log("First concurrent task completed:", _D(ts1), ret1)
    Log("Second concurrent task completed:", _D(ts2), ret2)
    Log("Third concurrent task completed:", _D(ts3), ret3)

    Log("GetTicker:", routine_getTicker.wait())
    Log("GetDepth:", routine_getDepth.wait())
    Log("GetTrades:", routine_getTrades.wait())

    rust
    
    
fn main() {
    // Rust 中 exchange.Go 使用类型化 token（如 Go::GetTicker）而非方法名字符串，无参时传 ()
    let routine_getTicker = exchange.Go(Go::GetTicker, ());
    let routine_getDepth = exchange.Go(Go::GetDepth, ());
    let routine_getTrades = exchange.Go(Go::GetTrades, ());

    // Sleep(2000)，如果这里使用Sleep语句，会导致之后的EventLoop函数错过之前的事件。因为等待了2秒，并发的函数已经收到了数据，之后才开始EventLoop监听机制，就会错过这些事件
    // 除非在第一行代码就开始调用EventLoop(-1)，先初始化EventLoop的监听机制，才不会错过这些事件

    // Log!("GetDepth:", routine_getDepth.wait(0)) 如果这里提前调用wait函数取出GetDepth函数并发调用的结果，本次GetDepth函数收到请求结果的事件便不会在EventLoop函数中返回
    let ts1 = Unix() * 1000;
    let ret1 = EventLoop(0);

    let ts2 = Unix() * 1000;
    let ret2 = EventLoop(0);

    let ts3 = Unix() * 1000;
    let ret3 = EventLoop(0);

    Log!("First concurrent task completed:", _D(ts1), ret1);
    Log!("Second concurrent task completed:", _D(ts2), ret2);
    Log!("Third concurrent task completed:", _D(ts3), ret3);

    Log!("GetTicker:", routine_getTicker.wait(0).unwrap());
    Log!("GetDepth:", routine_getDepth.wait(0).unwrap());
    Log!("GetTrades:", routine_getTrades.wait(0).unwrap());
}

    c++
    
    
void main() {
    auto routine_getTicker = exchange.Go("GetTicker");
    auto routine_getDepth = exchange.Go("GetDepth");
    auto routine_getTrades = exchange.Go("GetTrades");

    auto ts1 = Unix() * 1000;
    auto ret1 = EventLoop(0);

    auto ts2 = Unix() * 1000;
    auto ret2 = EventLoop(0);

    auto ts3 = Unix() * 1000;
    auto ret3 = EventLoop(0);

    Log("First concurrent task completed:", _D(ts1), ret1);
    Log("Second concurrent task completed:", _D(ts2), ret2);
    Log("Third concurrent task completed:", _D(ts3), ret3);

    Ticker ticker;
    Depth depth;
    Trades trades;
    routine_getTicker.wait(ticker);
    routine_getDepth.wait(depth);
    routine_getTrades.wait(trades);

    Log("GetTicker:", ticker);
    Log("GetDepth:", depth);
    Log("GetTrades:", trades);
}