I’ve read https://go.dev/blog/pipelines and there’re two functions:

// move numbers into a channel 
func gen(nums ...int) <-chan int {
    out := make(chan int)
    go func() {
        for _, n := range nums {
            out <- n
        }
        close(out)
    }()
    return out
}

// square those numbers take from "in" channel
func sq(in <-chan int) <-chan int {
    out := make(chan int)
    go func() {
        for n := range in {
            out <- n * n
        }
        close(out)
    }()
    return out
}

and inside main function

    in := gen(2, 3)

    // Distribute the sq work across two goroutines that both read from in.
    c1 := sq(in)
    c2 := sq(in)

I thought that sq is just a normal function, so c1 must take all values from “in” channel and c2 is empty, but it was not.

So this mean a goroutine inside a function still can get out of that function scope and return to main routine to execute next command ?