我确信有更好的方法可以做到这一点，我知道这很简单，但我是新手，所以请多多包涵。我正在尝试从两个函数(setCalculations 和 Calculations)设置结构(playersObject)的字段，更具体地说，我传入两个数组(playerData 和 playerData2 从 main 到这些函数的值，在这些函数中执行计算，并希望返回值以便可以在结构中设置它们。

package main
import (
    "fmt"
    "os"
    "log"
    "strings"
    "bufio"
    "strconv"
)

type playersObject struct {

        firstname, lastname string
        batting_average, slugging_percentage, OBP, teamaverage float64
    }


func strToFloat(playerData []string, playerData2 []float64) []float64 {

        for _, i := range playerData[2:] {
            j, err := strconv.ParseFloat(i, 64)
            if err != nil {
                panic(err)
            }
            playerData2 = append(playerData2, j)
        }
        return playerData2
}

func (player *playersObject) setCalculations (playerData []string, playerData2 []float64)  {

    player.firstname = playerData[1]
    player.lastname = playerData[0]
    player.batting_average = (playerData2[2] + playerData2[3] + playerData2[4] + playerData2[5]) / (playerData2[1])
    player.slugging_percentage = ((playerData2[2]) + (playerData2[3]*2) + (playerData2[4]*3) + (playerData2[5]*4) )/(playerData2[1])
    player.OBP = (( playerData2[2] + playerData2[3] + playerData2[4] + playerData2[5] +playerData2[6] +playerData2[7])/ (playerData2[0]))

}

func (player *playersObject) Calculations () (string, string, float64, float64, float64, ) {

    return player.firstname, player.lastname, player.batting_average, player.slugging_percentage, player.OBP
}


func main() {
    reader := bufio.NewReader(os.Stdin)
    fmt.Print("Enter file name: ")
    fileName, err := reader.ReadString('\n')
        if err != nil {
            log.Fatalf("failed opening file: %s", err)
        }
    fileName = strings.TrimSuffix(fileName, "\n")

    //fmt.Printf("%q\n", fileName)
    file, err := os.Open(fileName)
       scanner := bufio.NewScanner(file)
       scanner.Split(bufio.ScanLines)
       var fileOfPlayers []string

       for scanner.Scan() {
           fileOfPlayers = append(fileOfPlayers, scanner.Text())
       }

       file.Close()


      // var total_Average_sum float64 = 0
       var countofplayers float64 = 0
       //var total_average float64 = 0
       for _, player := range fileOfPlayers {
        countofplayers ++
        playerData := strings.Split(player, " ")
        var playerData2 = []float64{}
        playerData2 = strToFloat(playerData, playerData2)

        player := playersObject{}
        player.setCalculations(playerData, playerData2)

        calcs := player.Calculations()

        fmt.Println(firstname, lastname, batting_average, slugging_percentage, OBP)

    }
}

我收到错误 multiple-value player.Calculations() in single-value contextand undefined: firstname, lastname, batting_average, slugging_percentage, OBP

我知道这是非常不正确的，但我又是新来的 OOP。如果这可以以任何更简单的方式完成，我愿意接受并感谢所有帮助和提示。谢谢

最佳答案

此处，抛出错误是因为 Calculations() 返回多个值，但您试图将其分配给单个变量。

您需要更改 player.Calculations() 方法调用

    calcs := player.Calculations()

到

firstname, lastname, batting_average, slugging_percentage, OBP := player.Calculations()

话虽如此，我建议您阅读更多有关 golang 的内容可能是 here .您需要根据最佳实践重写代码

关于go - 从函数设置结构字段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55123375/