Go语法 - Goroutines

Goroutine

• go func(x)

channels

• declare:
  • var chan_name chan chan_type
  • chan_name := make(chan chan_type)
• send and receive data

channel <- data //write
data := <- channel //read 

• buffered channels:

ch := make(chan int, 100)

• unidirectional channel

sendch := make(chan<- int)

• closing channels in range loop

v, ok := <-ch //ok is false if no more data received

for i := range c{
    //stop when closed
}

• select:
  • blocked until one of the channels is ready
  • forever not ready, deadlock
  • if multiple are ready, randomly choose
  • non-blocking: default

select{
    case :
    //default :
}

• deadlock