I’ve been reading up on Go channels, and read that channels are FIFO. I created an unbuffered channel and a goroutine with a select like below, but am confused why the below always outputs the value 3 (the last value written to the channel)?

package main

import (
    "fmt"
)

var (
    valueChan = make(chan int64)
    value     = int64(0)
)

func Value() int64 {
    return <-valueChan
}

func SetValue(newValue int64) {
    value = newValue
}

func main() {
    go func() {
        for {
            select {
            case valueChan <- value:
            }
        }
    }()

    SetValue(1)
    SetValue(2)
    SetValue(3)
    fmt.Println(Value()) // prints 3
    fmt.Println(Value()) // prints 3
}