package main

import "fmt"

func main() {
    data := []string{"one","two","three"}

    // 非正确的捕获方式
    wrongFunctions := make([]func(), 0, 3)
    for _, v := range data {
        wrongFunctions = append(wrongFunctions, func() {
            fmt.Println(v)
        })
    }

    for _, wrongFunc := range wrongFunctions {
        wrongFunc() // 输出 three three three，而不是期望的 one two three
    }

    // 正确的捕获方式
    correctFunctions := make([]func(), 0, 3)
    for _, v := range data {
        value := v // 将值复制到了函数的每个局部版本
        correctFunctions = append(correctFunctions, func() {
            fmt.Println(value)
        })
    }

    for _, correctFunc := range correctFunctions {
        correctFunc() // 输出 one two three
    }
}