如何避免“ for循环中未使用的变量”错误

Question

How to avoid "unused variable in a for loop" error with code like

ticker := time.NewTicker(time.Millisecond * 500)
go func() {
    for t := range ticker.C {
        fmt.Println("Tick at", t)
    }
}()

if I actually don't use the t variable?

Answer 1

You don't need to assign anything, just use for range, like this (on play)

package main

import (
    "fmt"
    "time"
)

func main() {
    ticker := time.NewTicker(time.Millisecond * 500)
    go func() {
        for range ticker.C {
            fmt.Println("Tick")
        }
    }()
    time.Sleep(time.Second * 2)

}