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Mastering Concurrency in Go

Solution Review: Sum of Squares

Let's go over the solution of the Sum of Squares problem using `select` statements.

We'll cover the following...
Go (1.6.2)
package main
import "fmt"
func SumOfSquares(c, quit chan int) {
  y := 1
  for {
    select {
    case c <- (y*y):
      y++
    case <-quit:
      return
    }
  }
}
func main() {
  mychannel := make(chan int)
  quitchannel:= make(chan int)
  sum:= 0
  go func() {
    for i := 1; i <= 5; i++ {
      sum += <-mychannel
    }
    fmt.Println(sum)
    quitchannel <- 0
  }()
  SumOfSquares(mychannel, quitchannel)
}

Let’s go over the changes we made to the SumofSquares function.

func SumOfSquares(c, quit chan int) {
  y := 1
  for {
    select {
    case c <- (y*y):
      y++
    case
...