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go - 构造奇怪的行为

问题描述

我刚开始玩 Go-lang 并遇到了它的奇怪行为 Structs。我有一个 StructA和另一个 Struct B，在 Struct 中B定义为[]A问题的一个键是在分配新实例类型的值时，尽管类型相同，但它的B元素会抛出错误。A任何帮助将不胜感激在下面我粘贴导致错误的最小代码

package main

import (
    "fmt"
    "math"
    "github.com/shirou/gopsutil/disk"
    "strconv"
)

func main() {

    /************ disk details goes here ************/
    diskPartitions, err := disk.Partitions(true)
    dealwithErr(err)
    fmt.Println(diskPartitions)

    type PARTITIONLIST []PARTITION
    var partitionsList PARTITIONLIST

    for partitionIndex, partition := range diskPartitions {
        partitionStat, err := disk.Usage(partition.Mountpoint)
        dealwithErr(err)

        var partitionDetails = PARTITION{
            "PARTITION",
            partitionIndex,
            partition.Mountpoint,
            "" + fmt.Sprint(partitionStat.Total) + " and " + bytesToSize(partitionStat.Total),
            "" + fmt.Sprint(partitionStat.Used) + " and " + bytesToSize(partitionStat.Used),
            "" + fmt.Sprint(partitionStat.Free) + " and " + bytesToSize(partitionStat.Free),
            "" + fmt.Sprint(partitionStat.UsedPercent) + "and " + strconv.FormatFloat(partitionStat.UsedPercent, 'f', 2, 64),
        }

        partitionsList = append(partitionsList, partitionDetails)
    }

    //till here working fine
    fmt.Println(partitionsList)

    //THE BELOW TWO LINES ERROR IS THE ACTUAL ERROR I AM ASKING
    var partitionDetails = PARTITIONS{
        "partitions",
        partitionsList
    }



    dealwithErr(err)
}

/************ all struct goes here ************/

type PARTITION struct {
    Name                   string
    Partition_index        int
    Partition              string
    Total_space_in_bytes   string
    Used_space_in_bytes    string
    Free_space_in_bytes    string
    Percentage_space_usage string
}

type PARTITIONLIST []PARTITION

type PARTITIONS struct {
    Name                string
    List                []PARTITIONS
}

/************ helper functions goes below here ************/
func bytesToSize(bytes uint64) string {
    sizes := []string{"Bytes", "KB", "MB", "GB", "TB"}
    if bytes == 0 {
        return fmt.Sprint(float64(0), "bytes")
    } else {
        var bytes1 = float64(bytes)
        var i = math.Floor(math.Log(bytes1) / math.Log(1024))
        var count = bytes1 / math.Pow(1024, i)
        var j = int(i)
        var val = fmt.Sprintf("%.1f", count)
        return fmt.Sprint(val, sizes[j])
    }
}

func dealwithErr(err error) {
    if err != nil {
        fmt.Println(err)
    }
}

编辑：该错误正在运行时

意外的换行符，需要逗号或 }

并且那个警告编辑器显示在 IDE 上

不能使用 partitionsList（类型 PARTITIONSLIST）作为类型 []PARTITIONS

标签： gostruct

解决方案

考虑，阅读这篇文章并改变你的命名风格，

花时间决定什么是专有名称。

你已经声明PARITIONLIST了两次

type PARTITIONLIST []PARTITION //17th line, remove this

PARTITIONS定义为，

type PARTITIONS struct {
    Name string
    List []PARTITION
}

您可以使用字段PARTITIONLIST代替[]PARTITION类型List。

结构变量字段值以逗号结尾，

var partitionDetails = PARTITIONS{
        "partitions",
        partitionsList,
    }

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